THIRD RESTATED AND AMENDED
                            ARTICLES OF INCORPORATION
                     OF PIONEER HI-BRED INTERNATIONAL, INC.


TO THE SECRETARY OF STATE OF THE STATE OF IOWA:

        Pursuant to the  provisions  of Section  490.1007  of the Iowa  Business
Corporation Act, Chapter 490, Code of Iowa, the undersigned  Corporation  adopts
the following Third Restated and Amended Articles of Incorporation

                                    ARTICLE I

        The name of the  corporation  shall be  PIONEER  HI-BRED  INTERNATIONAL,
INC.,  and its principal  place of business  shall be in the City of Des Moines,
Polk County, Iowa.

                                   ARTICLE II

        The duration of the Corporation's existence hereunder is perpetual.

                                   ARTICLE III

        The purpose or purposes for which the Corporation is organized are: This
Corporation  shall  have  unlimited  power to engage in and to do any lawful act
concerning any or all lawful businesses for which  corporations may be organized
under Chapter 490 of the Code of Iowa.

                                   ARTICLE IV

        A. The aggregate amount of authorized  capital stock of this Corporation
shall be  $l50,000,000  divided into (i) 150,000,000  shares,  consisting of one
class  designated  as common and having a par value of One  Dollar  ($1.00)  per
share, and (ii) 10,000,000 shares,  consisting of one class designated as serial
preferred without par value.

        B. 1. Each  outstanding  share of common stock shall  entitle the holder
thereof to five votes on each matter properly submitted to the holders of shares
of common stock for their vote, consent, waiver, release or other action; except
that no holder  shall be  entitled  to  exercise  more than one vote on any such
matter in respect of any share of common  stock with  respect to which there has
been a  change  in  beneficial  ownership  during  the  thirty-six  (36)  months
immediately  preceding  the  date  on  which  a  determination  is  made  of the
shareholders who are entitled to take any such action.

               2. A change in beneficial  ownership of an  outstanding  share of
common stock shall be deemed to have  occurred  whenever a change  occurs in any
person or group of persons who,  directly or  indirectly,  through any contract,
arrangement,  understanding,  relationship or otherwise has or shares (i) voting
power,  which includes the power to vote, or to direct the voting of such share;
(ii)  investment  power,  which  includes  the power to direct the sale or other
disposition of such share;  (iii) the right to receive or retain the proceeds of
any sale or other  disposition  of such share;  or (iv) the right to receive any
distributions, including cash dividends, in respect of such share.

                      a. In the absence of proof to the contrary  provided in
accordance  with the procedures  referred to in subparagraph (4) of this
paragraph B, a change in beneficial ownership shall be deemed to have occurred
 whenever a share of common
stock is transferred of record into the name of any other person.

                      b. In the case of a share of  common  stock  held of  
record in the name of a corporation,  general  partnership,  limited  
partnership,  voting trustee, bank, trust company,  broker,  nominee or clearing
agency,  or in any other name except  a  natural  person,  if it has not  been  
established  pursuant  to such procedures that there has been no change in the
person or persons who direct the exercise  of the  rights  referred  to in 
clauses  2(i)  through  2(iv) of this paragraph  with  respect  to such  share 
of common  stock  during  the period of thirty-six  months  immediately  
preceding the date on which a determination  is made of the  shareholders who 
are entitled to take any action (or since November 14, 1985 for any period 
ending on or before November 14, 1988), then a change in beneficial ownership
 shall be deemed to have occurred during such period.

                      c. In the case of a share of  common  stock  held of  
record in the name of any person as trustee,  agent,  guardian or custodian
under the Uniform Gifts to Minors Act as in effect in any state, a change in
beneficial  ownership shall be deemed to have occurred whenever there is a 
change in the beneficiary of such trust,  the principal of such agent,  the ward
of such guardian or the minor for whom such custodian is acting or in such 
trustee, agent, guardian or custodian. 

               3. Notwithstanding  anything in this paragraph B to the contrary,
no change in beneficial  ownership  shall be deemed to have occurred solely as a
result of:

                      a.     any event that  occurred  prior to  November  14,  
1985 or pursuant to the terms of any  contract  (other than a contract  for the
purchase and sale of shares of common stock contemplating  prompt settlement),  
including contracts   providing   for  options,   rights  of  first  refusal and
similar arrangements  in existence on such date to which any holder of shares of
common stock is a party;

                      b.     any transfer of any  interest in shares of common 
stock  pursuant to a  bequest  or  inheritance,  by  operation  of law  upon the
death of any individual,  or  by any other transfer without valuable 
consideration, including a gift that is made in good faith and not for the  
purpose of  circumventing  this Article IV;

                      c.     any change in the beneficiary of any trust,  or any
distribution of a share of common stock from trust, by reason of the birth,  
death,  marriage or divorce of any natural  person,  the adoption of any natural
person prior to age 18 or the passage of a given period of time or the 
attainment by any natural person of a specific age, or the creation or 
termination of any  guardianship or custodial arrangement;

                      d.     any  appointment  of a  successor  trustee,  agent,
guardian  or custodian  with respect to a share of common stock if neither such 
successor has nor its  predecessor had the power to vote or to dispose of such 
share of common stock  without  further   instructions  from  others,  whose  
identities  remain unchanged;

                      e.     any  change  in  the   person  to  whom   dividends
or  other distributions  in respect to a share of common  stock are to be paid  
pursuant to the issuance or modification of a revocable dividend payment order; 
or

                      f.     except as provided in  subparagraph  (5) of this
paragraph B, any issuance of a share of common  stock by the  Corporation or any
 transfer by the Corporation  of a share of common  stock  held in  treasury,  
(i.e.,  the person acquiring  the share  shall be deemed on the date of issuance
or transfer by the Corporation to have  continuously  beneficially  owned such 
share for thirty-six (36) months),  unless otherwise determined by the Board of
Directors at the time of authorizing such issuance or transfer.

               4.  For  purposes  of  this   paragraph  B,  all   determinations
concerning changes in beneficial  ownership,  or the absence of any such change,
shall be made by the Corporation. Written procedures designed to facilitate such
determinations  shall be established by the Corporation and refined from time to
time. Such procedures shall provide,  among other things, the manner of proof of
facts  that will be  accepted  and the  frequency  with  which such proof may be
required to be renewed. The Corporation and any transfer agent shall be entitled
to rely on all information  concerning  beneficial ownership of the common stock
coming to their attention from any source and in any manner reasonably deemed by
them to be reliable, but neither the Corporation nor any transfer agent shall be
charged with any other  knowledge  concerning  the  beneficial  ownership of the
common stock.

               5. In the event of any stock split or stock dividend with respect
to the common stock, each share of common stock acquired by reason of such split
or dividend shall be deemed to have been  beneficially  owned by the same person
continuously  from the same date as that on which  beneficial  ownership  of the
share of common  stock,  with  respect to which  such share of common  stock was
distributed, was acquired.

               6. Each share of common stock, whether at any particular time the
holder thereof is entitled to exercise five votes for one, shall be identical to
all other shares of common stock in all other respects,  and together all of the
common shares shall constitute a single class of shares of the Corporation.

               7.  Notwithstanding  any  provision  in this  paragraph  B to the
contrary,  if at any time the common stock will be  ineligible  for inclusion on
the National  Market System of the National  Association of Securities  Dealers,
Inc.  Automated  Quotation  System (or such other  similar  automated  quotation
system as may  exist at the  time) so long as some but not all  shares of common
stock have five  votes per share,  then,  upon a  determination  by the Board of
Directors  that the  provisions  of this  paragraph  B no longer are in the best
interests  of  the  shareholders,  and  without  any  shareholder  action,  each
outstanding  share of common stock shall entitle the holder  thereof to one vote
on each matter properly submitted  thereafter to the holders of common stock for
their vote, consent, waiver, release or other action.

        C. The  preferences,  voting rights,  if any,  limitations  and relative
rights of the serial preferred stock are as follows:

               1. The  holders  of the  preferred  stock  shall be  entitled  to
receive dividends when and as declared by the Board of Directors at such rate as
shall be fixed by  resolution  of the Board of Directors as hereafter  provided,
which dividends  shall be cumulative,  before any dividends shall be paid or set
apart for payment on the common stock.  The holders of the preferred stock shall
have no rights to share in any dividend or  distribution of profits or assets of
the  Corporation,  whether in the form of cash,  stock  dividend  or  otherwise,
except to the extent specifically  provided herein or in said resolutions of the
Board of Directors.

               2. In the event of any liquidation,  dissolution or winding up of
the Corporation, the holders of the preferred stock shall be entitled to be paid
such  amounts  as shall be fixed by  resolution  of the Board of  Directors,  as
hereafter  provided,  before any amount shall be paid on the common stock. After
the payment to the holders of the  preferred  stock of all such amounts to which
they are entitled  pursuant to said  resolutions of the Board of Directors,  the
remaining  assets and funds of the Corporation  shall be divided and paid to the
holders  of  common  stock.  Neither  the  consolidation  nor the  merger of the
Corporation  with  or  into  any  other  corporation  or  corporations,   nor  a
reorganization  of the  Corporation  alone,  nor  the  sale or  transfer  by the
Corporation  of  all  or any  part  of  its  assets,  shall  be  deemed  to be a
liquidation,  dissolution  or winding up of the  Corporation  for the purpose of
this subparagraph (2).

               3. The preferred stock shall be subject to redemption in whole or
in part at such price and at such time and place and in such manner as the Board
of Directors shall determine.

               4.  Each  share of  preferred  stock  shall be  entitled  to such
privileges of  conversion,  if any, as are provided and declared by the Board of
Directors at such time as the issue of which it is a part is  established by the
Board of Directors.

                      The  preferred  stock may be  issued  from time to time in
series.
Authority is hereby expressly granted to the Board of Directors to authorize one
or more series of preferred  stock and to fix the number of shares to constitute
such series and  distinctive  designations  thereof  and,  with  respect to each
series of preferred stock, to fix by resolution or resolutions providing for the
issuance of such series such  variations in respect thereof as may be determined
by the Board of Directors.  All shares of every series of preferred  stock shall
be alike in every  particular,  and all  series  of  preferred  stock  hereafter
created  shall rank equally and be identical in all  respects,  except as to the
following  rights and  preferences  which may  constitute  variations as between
different series of preferred stock:

                      a.      The rate of the dividend on the shares of such 
series;

                      b.     The price at,  and the terms and  conditions  upon 
which  shares may be redeemed;

                      c.     The  amount  payable  upon  shares  in the event of
involuntary liquidation;

                      d.     The  amount  payable  upon  shares  in  the  event 
of  voluntary liquidation;

                      e.     Sinking  fund  provisions  for  the  redemption  or
 purchase  of shares;

                      f.     The terms and  conditions  on which shares may be  
converted,  if the shares of any series are issued with the privilege of
conversion; and

                      g.     Voting rights, if any.

        D. The  holder of any share of such  common  or serial  preferred  stock
shall  have no  preemptive  rights  to  acquire  any  additional  shares  of the
Corporation or to acquire any treasury stock of the Corporation.

                                    ARTICLE V

        A. The number of  directors  of the  Corporation  shall be not less than
twelve (12) and not greater than sixteen (16),  and,  effective as of the annual
meeting of  shareholders  in 1982, the Board of Directors  shall be divided into
three classes, designated Class I, Class II and Class III. Such classes shall be
as nearly equal in number as possible.  The term of directors of one class shall
extend  to each  annual  meeting  of  shareholders  and in all  cases as to each
director,  until his successor shall be elected and shall qualify,  or until his
earlier  resignation,  removal  from  office,  death or  incapacity.  Additional
directorships  resulting  from an  increase  in  number  of  directors  shall be
apportioned among the classes as equally as possible. The initial term of office
of directors of Class I shall extend to the annual  meeting of  shareholders  in
1983,  that of Class II shall extend to the annual  meeting in 1984, and that of
Class III shall  extend to the annual  meeting  in 1985,  and in all cases as to
each director  until his  successor  shall be elected and shall qualify or until
his earlier  resignation,  removal from  office,  death or  incapacity.  At each
annual meeting of  shareholders,  the number of directors equal to the number of
directors of the class whose term  extends to the time of such meeting  shall be
elected to hold office until the third succeeding annual meeting of shareholders
after their  election.  The Board of Directors  may, upon a majority vote of its
members,  increase or  decrease  the number of  directors  within the limits set
forth above. Vacancies in the Board of Directors or new directorships created by
an increase in the number of directors  shall be filled by majority  vote of the
remaining  members  of  the  Board  and  the  person  filling  such  vacancy  or
newly-created  directorship  shall serve out the  remainder  of the term for the
vacated directorship or, in the case of a new directorship,  the term designated
for the class of directors of which that directorship is a part.

        B. The  shareholders  may at any time at a meeting  expressly called for
that purpose  remove any or all of the directors,  only for cause,  by a vote of
two-thirds of the shares then entitled to vote at an election of directors.  For
purposes of this Article, removal "for cause" shall mean that the director to be
removed has been convicted of a felony by a court of competent  jurisdiction and
such  conviction is no longer subject to direct appeal,  or that the director to
be removed has been  adjudged to be liable for  negligence  or misconduct in the
performance of his duty to the Corporation by a court of competent  jurisdiction
and such adjudication is no longer subject to direct appeal.

        C. This  Article V may not be amended,  altered or repealed  without the
approval  of  two-thirds  of the  shares  entitled  to  vote  at the  time  such
amendment, alteration or repeal is proposed.

                                   ARTICLE VI

        The Board of Directors of this Corporation shall have the power to adopt
a corporate seal which shall be the corporate seal of this Corporation.

                                   ARTICLE VII

        The private property of the  shareholders of this  Corporation  shall at
all times be  exempt  from  liability  of  corporate  debts of any kind and this
Article shall not be amended or repealed.






                                  ARTICLE VIII

        In  the  event  that  any  shareholder  shall  become  indebted  to  the
Corporation,  the Corporation shall have a lien upon any shares of stock in this
Corporation owned by such shareholder for the full amount of such indebtedness.

                                   ARTICLE IX

        Stock in this  Corporation  shall be transferred only by assignment upon
the  books  of  the  Corporation,   subject  to  and  in  accordance  with  such
restrictions as may be provided in the by-laws of this Corporation.

                                    ARTICLE X

        To the fullest extent permitted by the Iowa Business  Corporation Act as
the same now exists or may hereafter be amended,  a director of the  Corporation
shall not be liable to the Corporation or its stock-holders for monetary damages
for breach of fiduciary duty as a director.  Any repeal or  modification of this
ARTICLE  X by  the  stockholders  of  the  Corporation  only  shall  be  applied
prospectively,  to the extent that such repeal or modification would, if applied
retrospectively,  adversely affect any limitation on the personal liability of a
director  of the  Corporation  existing  immediately  prior  to such  repeal  or
modification.

        The above Third Restated and Amended  Articles of  Incorporation  do not
contain an amendment  requiring the approval of the Corporation's  shareholders,
and  were  unanimously  adopted  by the  Corporation's  Board  of  Directors  on
September 9, 1996.

Dated this 15th day of January, 1997.


                                            PIONEER HI-BRED INTERNATIONAL, INC.
SEAL

                                            /s/    Jerry L. Chicoine
                                            By:    Jerry L. Chicoine
                                            Title: Senior Vice President, 
                                                       CFO & Secretary

STATE OF IOWA, COUNTY OF POLK:SS

        On this 15th day of January, 1997, before me, a notary public in and for
the State of Iowa,  personally  appeared  Jerry L.  Chicoine,  to me  personally
known,  who being by me duly sworn do say that he is the Senior Vice  President,
CFO and Secretary, respectively of said corporation, that the corporate seal has
been affixed to this document and that said Third Restated and Amended  Articles
of  Incorporation  were signed on behalf of said corporation by authority of its
Board of Directors and the said Jerry L. Chicoine  acknowledges the execution of
said  instrument  to be the  voluntary  act and deed of said  corporation  by it
voluntarily executed.

                                               /s/    Susan E. Griggs
                                               By:    Susan E. Griggs
                                                      Notary Public in and 
                                                       for the State of Iowa







                          Form of Articles of Amendment
                                     of the
                     Third Restated and Amended Articles of Incorporation
                     of Pioneer Hi-Bred International, Inc.



To the Secretary of State of the State of Iowa:

        Pursuant to the  provisions  of Section  490.1006  of the Iowa  Business
Corporation  Act, the undersigned  corporation  hereby amends its Third Restated
and Amended Articles of Incorporation (the "Articles of Incorporation"), and for
that purpose, submits the following statement:

        1.  The name of the corporation is Pioneer Hi-Bred International, Inc. 
(the "Corporation).

        2.  On December  13,  1996,  the Corporation adopted an amendment to its
            Articles of Incorporation, the text of which is  attached  hereto as
            Exhibit A.

        3.The  amendment  was duly  adopted  by the board of  directors  without
          shareholder approval, as shareholder approval is not required pursuant
          to Section 490.602 of the Iowa Business Corporation Act.

Date:    February 3, 1997


                                    Pioneer Hi-Bred International, Inc.


                                    /s/     Charles S. Johnson
                                    By:     Charles S. Johnson
                                    Title:  Chairman, President and CEO







                                                              EXHIBIT "A"

                       DESIGNATION, PREFERENCES AND RIGHTS
                        OF SERIES A JUNIOR PARTICIPATING
                                 PREFERRED STOCK
                                       OF
                       PIONEER HI-BRED INTERNATIONAL, INC.


        1.     Designation and Amount.
               (a)    There  shall  be  a  series  of  Preferred  Stock  of  the
                      Corporation  created out of the  authorized  but  unissued
                      shares  of the  capital  stock of the  Corporation,  which
                      series shall be designated  Series A Junior  Participating
                      Preferred Stock (the "Participating  Preferred Stock"), to
                      consist  of  one  hundred  and  fifty  thousand  (150,000)
                      shares, without par
                      value.

               (b)    Subject of paragraph 4(e) of this designation,  the number
                      of shares of said  series  may at any time or from time to
                      time be  increased  or decreased by the Board of Directors
                      notwithstanding   that   shares  of  such  series  may  be
                      outstanding at such time of increase or decrease.

        2.      Dividend Rate.

               (a)  The holders of shares of Participating Preferred Stock shall
                    be  entitled  to  receive,  when,  as and if declared by the
                    Board of Directors  out of funds  legally  available for the
                    purpose,  quarterly  dividends  payable in cash on the first
                    day of each November,  February, May and August in each year
                    (each such date  being  referred  to herein as a  "Quarterly
                    Dividend  Payment Date"),  commencing on the first Quarterly
                    Dividend Payment Date after the first issuance of a share or
                    fraction of a share of Participating  Preferred Stock, in an
                    amount per share  (rounded to the nearest cent) equal to the
                    greater of (a) $230.00 or (b) 1,000 times the  aggregate per
                    share  amount  of all cash  dividends  and  1,000  times the
                    aggregate per share amount (payable in kind) of all non-cash
                    dividends  or  other  distributions  other  than a  dividend
                    payable in shares of Common  Stock or a  subdivision  of the
                    outstanding shares of Common Stock (by  reclassification  or
                    otherwise),  declared on the Common Stock,  par value of One
                    Dollar ($1.00) per share,  of the  Corporation  (the "Common
                    Stock") since the immediately  preceding  Quarterly Dividend
                    Payment  Date,  or,  with  respect  to the  first  Quarterly
                    Dividend Payment Date, since the first issuance of any share
                    or fraction of a share of Participating Preferred Stock.

               (b)  On or after the first  issuance  of any share or  fractional
                    share of  Participating  Preferred  Stock,  no  dividend  on
                    Common Stock shall be declared unless concurrently therewith
                    a dividend or distribution is declared on the  Participating
                    Preferred Stock as provided in paragraph (a) above;  and the
                    declaration  of any such  dividend on the Common Stock shall
                    be expressly  conditioned upon payment or declaration of and
                    provision  for a  dividend  on the  Participating  Preferred
                    Stock  as  above  provided.  In the  event  no  dividend  or
                    distribution  shall have been  declared on the Common  Stock
                    during the period  between any  Quarterly  Dividend  Payment
                    Date  and the next  subsequent  Quarterly  Dividend  Payment
                    Date,  a dividend of $230.00 per share on the  Participating
                    Preferred  Stock  shall  nevertheless  be  payable  on  such
                    subsequent Quarterly Dividend Payment Date.

               (c)  Dividends  shall  begin  to  accrue  and  be  cumulative  on
                    outstanding shares of Participating Preferred Stock from the
                    Quarterly  Dividend  Payment Date next preceding the date of
                    issue  of such  shares  of  Participating  Preferred  Stock,
                    unless  the  date of issue  of such  shares  is prior to the
                    record date for the first Quarterly  Dividend  Payment Date,
                    in which case dividends on such shares shall begin to accrue
                    from the date of issue of such shares, or unless the date of
                    issue  is a  Quarterly  Dividend  Payment  Date or is a date
                    after the record  date for the  determination  of holders of
                    shares of Participating  Preferred Stock entitled to receive
                    a  quarterly  dividend  and before such  Quarterly  Dividend
                    Payment Date, in either of which events such dividends shall
                    begin  to  accrue  and be  cumulative  from  such  Quarterly
                    Dividend  Payment Date.  Accrued but unpaid  dividends shall
                    not bear  interest.  The Board of Directors may fix a record
                    date  for  the   determination   of  holders  of  shares  of
                    Participating Preferred Stock entitled to receive payment of
                    a dividend distribution declared thereon,  which record date
                    shall be no more  than 30 days  prior to the date  fixed for
                    the payment thereof.

        3.  Dissolution.  Liquidation  and  Winding  Up.  In  the  event  of any
voluntary or involuntary  dissolution,  liquidation or winding up of the affairs
of the Corporation (hereinafter referred to as a "Liquidation"),  the holders of
Participating  Preferred Stock shall receive at least $1,000.00 per share,  plus
an amount  equal to accrued  and unpaid  dividends  and  distributions  thereon,
whether or not declared, to the date of such payment,  provided that the holders
of shares of Participating Preferred Stock shall be entitled to receive at least
an aggregate  amount per share equal to 1,000 times the  aggregate  amount to be
distributed per share to holders of Common Stock (the  "Participating  Preferred
Liquidation Preference").

        4. Voting Rights. The holders of shares of Participating Preferred Stock
shall have the following voting rights:

               (a) Each share of Participating Preferred Stock shall entitle the
holder thereof to five thousand (5,000) votes on all matters submitted to a vote
of the stockholders of the  Corporation,  except that no holder of Participating
Preferred  Stock shall be entitled to exercise  more than one  thousand  (1,000)
votes on any such  matter in  respect  of any share of  Participating  Preferred
Stock if such holder would have been  entitled to exercise no more than one vote
on any such matter in respect of any share of Common Stock under Article IV.B of
the Articles of Incorporation,  had such shares of Participating Preferred Stock
been shares of Common Stock.

               (b) Except as otherwise  provided herein, or by law, the Articles
of  Incorporation  or the By-laws of the  Corporation,  the holders of shares of
Participating  Preferred  Stock and the holders of shares of Common  Stock shall
vote together as one class on all matters submitted to a vote of stockholders of
the Corporation.

               (c) If and  whenever  dividends  on the  Participating  Preferred
Stock shall be in arrears in an amount equal to six quarterly dividend payments,
then and in such event the holders of the Participating  Preferred Stock, voting
separately as a class  (subject to the  provisions of  subparagraph  (d) below),
shall be  entitled  at the next  annual  meeting of the  stockholders  or at any
special  meeting  to  elect  two (2)  directors.  Each  share  of  Participating
Preferred Stock shall be entitled to one vote, and holders of fractional  shares
shall have the right to a fractional  vote. Upon election,  such directors shall
become  additional  directors of the  Corporation  and the authorized  number of
directors of the Corporation shall thereupon be automatically  increased by such
number of directors.  Such right of the holders of Participating Preferred Stock
to elect  directors  may be  exercised  until all  dividends  in  default on the
Participating  Preferred  Stock shall have been paid in full,  and dividends for
the current  dividend period declared and funds therefor set apart,  and when so
paid and set apart, the right of the holders of Participating Preferred Stock to
elect such number of directors  shall cease,  the term of such  directors  shall
thereupon  terminate,  and the authorized number of directors of the Corporation
shall  thereupon  return to the  number of  authorized  directors  otherwise  in
effect,  but  subject  always to the same  provisions  for the  vesting  of such
special  voting  rights  in the  case of any such  future  dividend  default  or
defaults.  The fact that  dividends  have been paid and set apart as required by
the  preceding  sentence  shall be  evidenced by a  certificate  executed by the
President and the chief  financial  officer of the  Corporation and delivered to
the Board of  Directors.  The  directors so elected by holders of  Participating
Preferred  Stock shall serve until the  certificate  described in the  preceding
sentence  shall have been  delivered  to the Board of  Directors  or until their
respective successors shall be elected or appointed and qualify.

        At any time when such special  voting  rights have been so vested in the
holders of the  Participating  Preferred Stock, the Secretary of the Corporation
may, and upon the written request of the holders of record of 10% or more of the
number of shares of the Participating Preferred Stock then outstanding addressed
to such  Secretary at the principal  office of the  Corporation  in the State of
Iowa,  shall,  call a  special  meeting  of  the  holders  of the  Participating
Preferred  Stock for the  election  of the  directors  to be  elected by them as
hereinabove  provided,  to be held in the case of such  written  request  within
forty (40) days after delivery of such request, and in either case to be held at
the  place  and  upon  the  notice  provided  by law and in the  By-laws  of the
Corporation for the holding of meetings of stockholders;  provided, however that
the  Secretary  shall not be required to call such a special  meeting (i) if any
such  request is  received  less than ninety (90) days before the date fixed for
the next ensuing  annual or special  meeting of  stockholders  or (ii) if at the
time any such request is received, the holders of Participating  Preferred Stock
are not entitled to elect such directors by reason of the occurrence of an event
specified in the third sentence of subparagraph (d) below.

               (d) if; at any time when the holders of  Participating  Preferred
Stock are entitled to elect  directors  pursuant to the foregoing  provisions of
this paragraph 4, the holders of any one or more additional  series of Preferred
Stock  are  entitled  to elect  directors  by  reason  of any  default  or event
specified  in the  Articles  of  Incorporation,  as in effect at the time of the
designation for such series,  and if the terms for such other additional  series
so permit,  the voting  rights of the two or more series  then  entitled to vote
shall be combined (with each series having a number of votes proportional to the
aggregate  liquidation  preference of its outstanding shares). In such case, the
holders  of  Participating  Preferred  Stock and of all such other  series  then
entitled  so to vote,  voting as a class,  shall  elect such  directors.  If the
holders  of any such other  series  have  elected  such  directors  prior to the
happening  of the  default or event  permitting  the  holders  of  Participating
Preferred  Stock to elect  directors,  or prior  to a  written  request  for the
holding of a special  meeting being received by the Secretary of the Corporation
from  the  holders  of not  less  than 10% of the  then  outstanding  shares  of
Participating Preferred Stock, then such directors so previously elected will be
deemed to have been  elected by and on behalf of the  holders  of  Participating
Preferred Stock as well as such other series,  without prejudice to the right of
the  holders of  Participating  Preferred  Stock to vote for  directors  if such
previously  elected directors shall resign,  cease to serve or fail to stand for
reelection  while the holders of  Participating  Preferred Stock are entitled to
vote. If the holders of any such other series are entitled to elect in excess of
two (2) directors,  the  Participating  Preferred Stock shall not participate in
the  election of more than two (2) such  directors,  and those  directors  whose
terms first expire shall be deemed to be the directors elected by the holders of
Participating Preferred Stock; provided that, if at the expiration of such terms
the  holders  of  Participating  Preferred  Stock  are  entitled  to vote in the
election of directors  pursuant to the  provisions of this paragraph 4, then the
Secretary  of the  Corporation  shall call a meeting  (which  meeting may be the
annual meeting or special  meeting of  stockholders  referred to in subparagraph
(c)) of holders of  Participating  Preferred  Stock for the  purpose of electing
replacement directors (in accordance with the provisions of this paragraph 4) to
be held on or prior to the time of expiration of the expiring  terms referred to
above.

               (e) Except as otherwise  set forth herein or required by law, the
Articles  of  Incorporation  or the  By-laws  of  the  Corporation,  holders  of
Participating  Preferred  Stock  shall have no special  voting  rights and their
consent  shall not be required  (except to the extent they are  entitled to vote
with  holders  of  Common  Stock as set  forth  herein)  for the  taking  of any
corporate  action.   No  consent  of  the  holders  of  outstanding   shares  of
Participating Preferred Stock at any time outstanding shall be required in order
to permit the Board of  Directors  to:  (i)  increase  the number of  authorized
shares of  Participating  Preferred Stock or to decrease such number to a number
not below the sum of the number of shares of Participating  Preferred Stock then
outstanding and the number of shares with respect to which there are outstanding
rights to  purchase;  or (ii) to issue  Preferred  Stock  which is senior to the
Participating Preferred Stock, junior to the Participating Preferred Stock or on
a parity with the Participating Preferred Stock.

        5.     Redemption. The shares of Participating Preferred Stock shall not
               be redeemable.

        6.     Conversion  Rights.  The Participating  Preferred Stock is not 
convertible into Common Stock or any other security of the Corporation.








                              Articles of Amendment
                                     of the
              Third Restated and Amended Articles of Incorporation
                                       of
                       Pioneer Hi-Bred International, Inc.





To the Secretary of State
   of the State of Iowa


        Pursuant to the  provisions  of Section  490.1006  of the Iowa  Business
Corporation  Act, the undersigned  corporation  hereby amends its Third Restated
and Amended Articles of Incorporation (the "Articles of Incorporation"), and for
that purpose, submits the following statement:

   1.   The  name  of  the  corporation   is  Pioneer   Hi-Bred   International,
        Inc.  (the "Corporation").

   2.  On August 5, 1997,  the  Corporation  adopted an  amendment  to its Third
       Restated  and  Amended  Articles of  Incorporation,  the text of which is
       attached hereto as Exhibit A.

   3.  The  amendment  was  duly  adopted  by  the  Board  of  Directors  of the
       Corporation without shareholder  approval, as shareholder approval is not
       required  pursuant to Section  490.602 of the Iowa  Business  Corporation
       Act.


Dated:  September 9, 1997.


                                            /s/    John D. James
                                            By:    John D. James
                                                   Senior Vice President








                                    EXHIBIT A






                    CERTIFICATE OF THE DESIGNATIONS, POWERS,
                    PREFERENCES AND RELATIVE, PARTICIPATING,
                OPTIONAL OR OTHER RIGHTS, AND THE QUALIFICATIONS,
                     LIMITATIONS OR RESTRICTIONS THEREOF, OF

                      SERIES A CONVERTIBLE PREFERRED STOCK



                                       OF



                       PIONEER HI-BRED INTERNATIONAL, INC.






Pioneer Hi-Bred  International,  Inc., an Iowa corporation (the  "Corporation"),
does hereby certify that the Board of Directors of the Corporation  duly adopted
the following resolution, at a meeting duly convened and held on August 5, 1997,
in  respect  of a series of  Preferred  Stock of the  Corporation,  pursuant  to
authority   conferred   upon  the  Board  by  Article  IV  of  the  Articles  of
Incorporation  of the  Corporation  and in  accordance  with  Section 602 of the
Business Corporation Act of the State of Iowa:

BE IT  RESOLVED,  that  the  issuance  of a  series  of  Preferred  Stock of the
Corporation  is  hereby  authorized,   and  the  designation,   amount,  powers,
preferences and relative,  participating,  optional and other special rights and
qualifications,  limitations  and  restrictions  thereof,  of the shares of such
series of Preferred Stock of the Corporation, are hereby fixed as follows:

        1. Designation;  Class and Amount;  Certain  Definitions.  The series of
Preferred  Stock,  the issuance of which is hereby  authorized,  shall  comprise
200,000 shares the distinctive  serial  designation of which shall be "Preferred
Stock, Series A", which is sometimes herein referred to as "Series A Convertible
Preferred  Stock".  Each share of Series A Convertible  Preferred Stock shall be
identical  in all  respects  with all  other  shares  of  Series  A  Convertible
Preferred  Stock.  The number of shares of Series A Convertible  Preferred Stock
which are purchased or otherwise  acquired by the  Corporation or converted into
Common  Stock shall be canceled  and shall  revert to  authorized  but  unissued
shares of Series A Convertible  Preferred Stock  undesignated as to series.  The
Corporation  shall not  issue,  sell or  otherwise  transfer  shares of Series A
Convertible Preferred Stock to any Person other than the members of the Investor
Group.  Certain  capitalized  terms  used  herein  have the  meanings  specified
therefor in Section 10 below.

        2. Dividends. (a) Except as set forth in the Investment Agreement,  each
Holder of shares of Series A Convertible  Preferred Stock shall participate with
the holders of Common Stock in all  Dividends,  when,  as and if declared by the
Board and paid or distributed by the  Corporation on or in respect of the Common
Stock on a share for share  basis  and in like  tenor and forms as the  Dividend
paid on the  Common  Stock as if all  shares of Series A  Convertible  Preferred
Stock were  converted  into the number of shares of Common Stock (whether or not
the Series A Convertible  Preferred Stock is then so convertible)  calculated in
accordance with Section 6 below,  immediately  prior to the record date for such
Dividend.  Except as set forth above,  holders of shares of Series A Convertible
Preferred  Stock shall not be entitled to receive any  dividends.  Except to the
extent payable in respect of dividends paid on the Common Stock, no interest, or
sum of money in lieu of  interest,  shall be payable in respect of any  dividend
payment or payments on shares of Series A Convertible Preferred Stock.

                  (b) Dividends on the Series A Convertible  Preferred  Stock in
respect of each Dividend shall be payable,  when and if declared by the Board of
Directors,  concurrently  with each date of payment (each such date, a "Dividend
Payment Date") by the  Corporation  of Dividends on the Common Stock.  Dividends
payable in cash shall be paid by wire transfer in immediately available funds to
the accounts  designated by the respective  Holders in written  notices given to
the  Corporation at least two Business Days prior to the payment date or by such
other means as may be agreed to by the Corporation and the respective Holders.

                  (c) The Corporation will cause written notice of each Dividend
on the Series A  Convertible  Preferred  Stock to be given to each Holder within
five Business Days after it is determined by the Board of Directors.

        3. Voting Rights

                  (a) Except as otherwise provided herein or as required by law,
the Holders of Series A Convertible Preferred Stock shall not be entitled to any
Vote.

                  (b) At any  meeting  called  for the  purpose of voting on (or
acting by written  consent  with  respect to) any matter to be voted upon by the
holders of Common  Stock of the  Corporation,  the holders of shares of Series A
Convertible Preferred Stock and the holders of shares of Common Stock shall vote
together as one class on all matters so submitted to a vote of  stockholders  of
the  Corporation.  At any such meeting or in connection  with any such action by
written consent, each share of Series A Convertible Preferred Stock shall carry,
as of the record date  applicable  to such vote,  a number of votes equal to the
Per Share Vote Amount as calculated by the Corporation for such meeting.

                  (c) In  accordance  with  Section  6.2(b)  of  the  Investment
Agreement,  the  Corporation  will cause written  notice of any vote as to which
holders of Common Stock are entitled to vote as a separate class or voting group
under the Articles of Incorporation or Iowa Law (a "Class Vote"), to be given to
each Holder at least 15 Business Days prior to such Class Vote.

        4. Liquidation Preference.  In the event of any voluntary or involuntary
liquidation,  dissolution or winding up of the affairs of the  Corporation,  the
Holders of shares of Series A Convertible Preferred Stock then outstanding shall
be entitled,  for each share of Series A Convertible Preferred Stock, to be paid
out  of  the  assets  of  the  Corporation  available  for  distribution  to its
stockholders  the amount of cash or other  property that would be payable on the
number of shares of Common Stock then issuable upon  conversion of such share of
Series A Convertible  Preferred  Stock (whether or not then  convertible)  (such
amount payable being adjusted  appropriately  to reflect any stock split,  stock
dividend,  reverse stock split, or any transaction  with comparable  effect upon
the Common  Stock)  (the  "Liquidation  Preference").  This  entitlement  of the
Holders of shares of Series A Convertible  Preferred  Stock, to the extent equal
to $.01  for each  share  of  Series A  Convertible  Preferred  Stock,  shall be
satisfied before any similar payment shall be made or any assets  distributed to
the  holders of the  Common  Stock or any other  security  junior in rank to the
Series A  Convertible  Preferred  Stock as to  distribution  of assets upon such
dissolution,  liquidation  or winding up and  otherwise  shall be satisfied on a
pari passu  basis with the  holders  of the Common  Stock.  If the assets of the
Corporation are not sufficient to pay in full the liquidation  payments  payable
to all  of the  Holders  of the  outstanding  shares  of  Series  A  Convertible
Preferred Stock, then the Holders of all such shares shall share ratably in such
distribution of assets in accordance  with the  liquidation  preference to which
they are entitled. For the purposes of this section, neither the voluntary sale,
conveyance, exchange or transfer (for cash, shares of stock, securities or other
consideration)  of all or  substantially  all of the  property  or assets of the
Corporation nor the  consolidation or merger of the Corporation with one or more
other corporations  shall be deemed to be a liquidation,  dissolution or winding
up, voluntary or involuntary,  unless such voluntary sale, conveyance,  exchange
or  transfer  shall be in  connection  with a  dissolution  or winding up of the
business of the Corporation.

        5.  Restrictions  on  Transfer.  The  shares  of  Series  A  Convertible
Preferred  Stock are  subject  to the  provisions  of the  Investment  Agreement
(including the provisions thereof restricting transfer of such stock).

        6.  Conversion.  (a)(i)  Concurrently  with the  transfer of  Beneficial
Ownership  of any share of Series A  Convertible  Preferred  Stock to any Person
other  than the  Investor  or  another  member  of the  Investor  Group or Other
Investor  Affiliate,  such share of Series A Convertible  Preferred  Stock shall
convert into [100]*  fully-paid  and  non-assessable  shares of Common Stock (as
adjusted  pursuant to Section 6(c)), in accordance with the procedures  provided
in clause (b) of this Section 6.

                      (ii) At any time (x) at the direction of the Corporation, 
but only if the Corporation  intends to recommend approval of a Voting Amendment
(as defined in  the  Investment  Agreement),  and  (y)  at the  direction of the
Investor, following the approval and effectiveness of a Voting Amendment, share
of Series A Convertible  Preferred Stock shall be mandatorily  convertible  into
fully-paid and  non-assessable  shares  of  Common  Stock,  with  each  share of
Series A Convertible  Preferred  Stock being converted into [100]* shares of 
Common Stock (as adjusted pursuant to Section 6(c)).






                      (iii) The  Investor  shall have the right,  in  accordance
with Section 8.8
of the  Investment  Agreement,  at any time that the  Investor  may exercise the
Optional Conversion Right (as defined in the Investment Agreement) in accordance
with the  Investment  Agreement,  to cause all  shares  of Series A  Convertible
Preferred  Stock to be converted into  fully-paid and  non-assessable  shares of
Common  Stock,  with each share of Series A  Convertible  Preferred  Stock being
converted  into [100]*  shares of Common Stock (as adjusted  pursuant to Section
6(c)).
                      (iv) At any time  that all  outstanding  shares  of Common
Stock (or whatever  security  received upon conversion or exchange  thereof) 
have the same vote per share,  if any, without any time phase voting, all shares
of Series A Convertible   Preferred   Stock  shall  be  convertible   into   
fully-paid  and non-assessable  shares  of  Common  Stock,  with  each  such  
share of  Series A Convertible  Preferred  Stock being converted into [100]* 
shares of Common Stock (as adjusted pursuant to Section 6(c)).

                      (v) Except as set forth in this Section  6(a),  the shares
of Series A Convertible  Preferred  Stock are not  convertible  at the option of
the Holder thereof.

       (b) (i) Any  Holder of shares of  Series A  Convertible  Preferred  Stock
required (or in the case of clauses (iii) or (iv) above  requesting)  to convert
any or all such shares into Common  Stock  shall  surrender  the  certificate(s)
evidencing such shares of Series A Convertible  Preferred Stock of the Holder at
the office of the transfer agent appointed for the purpose of such conversion by
the Corporation.  Such surrendered  certificate(s),  if the Corporation shall so
require,  shall be duly endorsed to the  Corporation or in blank, or accompanied
by proper instruments of transfer to the Corporation or in blank.

                      (ii) The Corporation shall, within one Business Day after 
such surrender of certificates  evidencing  shares of Series A Convertible  
Preferred Stock  accompanied by written notice and in compliance with any other 
conditions contained herein, issue and deliver, or cause to be issued and 
delivered, to the Person(s) for whose account such  certificate(s)  evidencing  
shares of Series A Convertible  Preferred Stock were so  surrendered,  or to th
nominee(s) of such Person(s),  certificates  representing the number of full 
shares of Common Stock to  which  such  Person  shall  be  entitled  pursuant to
the  then-applicable conversion  rate. Such conversion  shall be deemed to have 
been made on the date of  such  surrender  of  the  certificate(s)   evidencing 
shares  of  Series  A Convertible  Preferred  Stock to be  converted  (the  
"Surrender  Date") and the Person(s)  entitled to receive the Common Stock 
deliverable  upon conversion of such Series A Convertible  Preferred  Stock 
shall be treated for all purposes as the  record  holder(s)  of such  Common  
Stock  on  such  date  and  thereafter. Conversion of Series A Convertible  
Preferred Stock may otherwise be achieved in accordance with such procedures as
the Corporation and a majority of the Holders may agree.

                      (iii) In the event  that fewer than all shares of Series A
Convertible Preferred  Stock  represented by a surrendered  certificate  are to 
be converted hereunder, a new certificate shall be  issued at the  Corporation's
expense representing  the  shares  of  Series  A  Convertible  Preferred  Stock 
not  so converted.

                      (iv) In  connection  with the  conversion of any shares of
Series A Convertible  Preferred  Stock,  no  fractions of shares of Common Stock
shall be issued,  but in lieu  thereof the  Corporation  shall pay a cash  
adjustment in respect of such fractional interest in an amount  equal to such 
fractional interest multiplied by the Market Price (as defined in the  
Investment Agreement) per  share  of  Common  Stock  on the day on  which  such 
shares of Series A Convertible Preferred Stock are deemed to have been 
converted.

               (c) The  conversion  rate shall be adjusted  from time to time as
follows:


* Number of shares of Common Stock each share is convertible  into is subject to
adjustment prior to closing in the event of a stock split,  stock combination or
similar adjustment in the number of shares of Common Stock outstanding.







                      (i) In case the Corporation shall, at any time or from
time to time while any of the shares of Series A Convertible Preferred Stock are
outstanding, (A) subdivide or reclassify its outstanding shares of Common Stock 
into a larger number of shares, or (B) combine or reclassify its outstanding  
shares of Common Stock into a smaller number of shares, the conversion rate in
effect immediately prior to such  action  shall be  adjusted  so that the Holder
of any  shares of Series A Convertible Preferred Stock thereafter surrendered 
for conversion shall be entitled to receive the number of shares of Common Stock
which such Holder would have owned or have been  entitled to receive immediately
following  such action had such shares of Series A Convertible  Preferred  Stock
been  converted immediately  prior thereto.  An adjustment made pursuant to this
Section 6(c)(i) shall become effective  immediately after the close of business 
on the effective date of a subdivision,  reclassification  or combination.  If,
as a result of an adjustment  made pursuant to this Section  6(c)(i), the Holder
of any shares of Series A Convertible Preferred Stock thereafter surrendered for
conversion shall become entitled to receive shares of two or more classes of
capital stock of the Corporation,  the Board of Directors shall make an
appropriate allocation of the adjusted  conversion  rate between or among shares
of such  classes of capital stock in accordance  with the  entitlements  of the
Common Stock  underlying the Series A Convertible Preferred Stock in connection 
with such adjustment.

                      (ii)  Whenever an  adjustment  in the  conversion  rate is
required, the Corporation shall  forthwith place on file with its Transfer Agent
a statement signed  by its  Chief  Executive  Officer,  Chief Financial  Officer
or a Vice President  and by its  Secretary,  Assistant  Secretary,  Treasurer or
Assistant Treasurer, stating the adjusted conversion rate determined as provided
herein. Such  statements  shall set forth in  reasonable  detail  such facts as
shall be necessary to show the reason and the manner of computing such 
adjustment.

        (d) (i) The  Corporation  shall at all times reserve and keep available,
free from  preemptive  rights,  out of its authorized and unissued  stock,  such
number of shares of its Common Stock as shall from time to time be sufficient to
effect the conversion of all shares of Series A Convertible Preferred Stock from
time to time  outstanding,  solely for the purpose of effecting such conversion.
The  Corporation  shall,  from time to time, in accordance  with the laws of the
State of Iowa,  increase the  authorized  number of shares of Common Stock if at
any time the number of shares of authorized and unissued  Common Stock shall not
be sufficient to permit the  conversion  of all the then  outstanding  shares of
Series A Convertible Preferred Stock.

                      (ii) The Corporation will pay any and all stamp and 
transfer taxes that may be payable in respect of the  issuance or delivery of 
shares of Common Stock upon  conversion  of shares of Series A  Convertible  
Preferred  Stock  pursuant hereto. The Corporation shall not, however, be 
required to pay any tax which may be payable in respect of any  transfer  
involved in the issuance and delivery of shares of Common Stock in a name other 
than that in which the shares of Series A Convertible Preferred Stock so
converted were registered and no such issuance or delivery shall be made unless 
and until the person  requesting such issuance has paid to the  Corporation  the
amount of any such tax or has  established  to the satisfaction of the 
Corporation that such tax has been paid. 

        (e) In case of (i) any  reclassification or change of outstanding shares
of Common  Stock  (other  than a change in par value or from par value to no par
value or from no par  value to par  value,  or as a result of a  subdivision  or
combination) or (ii) any  consolidation or merger of the Corporation with one or
more  other  corporations  (other  than a  consolidation  or merger in which the
Corporation  is the  continuing  corporation  and which  does not  result in any
reclassification  or change of outstanding  shares of Common Stock issuable upon
conversion  of  Series A  Convertible  Preferred  Stock)  or  (iii)  any sale or
conveyance to another corporation or other entity of all or substantially all of
the  property  of the  Corporation,  then  the  Corporation,  or such  successor
corporation  or  other  entity,  as the  case  may be,  shall  make  appropriate
provision  so that the  holder of each share of Series A  Convertible  Preferred
Stock then outstanding  shall have the right to convert such share into the kind
and amount of shares of stock or other  securities and property  receivable upon
such consolidation,  merger, sale,  reclassification,  change or conveyance by a
holder of the number of shares of Common  Stock into which such shares of Series
A Convertible  Preferred  Stock might have been converted  immediately  prior to
such  consolidation,  merger,  sale,  reclassification,  change  or  conveyance,
subject to adjustment which shall be as nearly  equivalent as may be practicable
to the adjustments  provided for in Section 6(c). If the holders of Common Stock
are entitled to elect the  consideration  payable  pursuant  any  consolidation,
merger,  sale,  conveyance or other  transaction  or event set forth above,  the
Holders also shall be entitled to elect between such forms of consideration. The
provisions of this paragraph shall apply similarly to successive consolidations,
mergers, sales, conveyances or other transactions or events.

        (f)  Whenever the number of shares of Common Stock into which each share
of Series A Convertible  Preferred  Stock is convertible is adjusted as provided
in this Section 6, the  Corporation  shall promptly mail to the Holders a notice
in  accordance  with Section 8 below stating that the number of shares of Common
Stock  into  which  the  shares  of  Series A  Convertible  Preferred  Stock are
convertible  has been  adjusted  and  setting  forth the new number of shares of
Common Stock (or describing the new stock,  securities,  cash or other property)
into which each share of Series A Convertible Preferred Stock is convertible, as
a result of such  adjustment,  a brief  statement  of the facts  requiring  such
adjustment  and  the  computation  thereof,  and  when  such  adjustment  became
effective.

        7. Limited Priority.  The Series A Convertible Preferred Stock shall, to
the extent of the  Liquidation  Preference  set forth in Section 4, be senior in
rank as to distribution of assets upon any  liquidation,  dissolution or winding
up of the  affairs  of the  Corporation,  to the Common  Stock,  or any class of
equity securities of the Corporation which by its terms are junior to the Series
A  Convertible  Preferred  Stock,  unless the  Holders of 66 2/3  percent of the
outstanding  shares of the Series A Convertible  Preferred Stock shall otherwise
consent.

        8. Notices.  The Corporation  shall provide notice to each Holder of any
action  taken  or  proposed  to be  taken  or  any  determination  made  by  the
Corporation   and/or  the  Holder  under  the  terms  of  this   Certificate  of
Designations.  Notice of any such  action or  determination  by the  Corporation
and/or the Holder and all other notices and other communications provided for in
this  Certificate  of  Designations  shall  be  delivered  by  facsimile  and by
reputable overnight courier,

        (a)    If to the Company, to:

Pioneer Hi-Bred International, Inc,
700 Capital Square
Des Moines, Iowa  50309
Attention:  General Counsel
Telephone:  515-248-4800
Telecopier:  515-248-4844

with a copy to:

Fried, Frank, Harris, Shriver & Jacobson
One New York Plaza
New York, New York 10004
Facsimile:  (212) 859-4000
Attn.:  Stephen Fraidin

or such other address as the Corporation shall have furnished to the Holders in
writing,

        (b) if to a Holder,  to the address and facsimile  number of such Holder
listed on the Stock Books of the Corporation.

        9. Definitions.  Certain capitalized terms are used herein as defined
below:

         "Affiliate" of a Person has the meaning set forth in Rule 12b-2 under
the Exchange Act.

         "Articles  of  Incorporation"  means the  Third  Restated  and  Amended
Articles of Incorporation of the Corporation, as amended from time to time.

         "Beneficially  Owned"  with  respect  to any  securities  means  having
"beneficial  ownership" of such securities (as determined pursuant to Rule 13d-3
under the Exchange Act, as in effect on the date hereof,  without  limitation by
the 60-day  provision in paragraph  (d)(1)(i)  thereof).  The terms  "Beneficial
Ownership" and "Beneficial Owner" have correlative meanings.

         "Board" means the Board of Directors of the Corporation.

         "Business Day" means any day other than a Saturday, Sunday, or a day on
which banking  institutions  in the State of Iowa are authorized or obligated by
law or executive order to close.

         "Certificate of  Designations"  means this Certificate of Designations,
Powers, Preferences and Relative,  Participating,  Optional or other Rights, and
the Qualifications,  Limitations or Restrictions Thereof,  creating the Series A
Convertible Preferred Stock.

         "Common Stock" means the Common Stock, par value $1.00 per share, of 
the Corporation.

         "Common  Voting  Power"  means,  in respect of any record  date for any
meeting of stockholders  (or action by written consent in lieu of a meeting) the
aggregate Votes represented by all then outstanding Voting Securities other than
the  Series  A  Convertible  Preferred  Stock  as  determined  by the  Board  in
accordance with the procedures set forth in the Articles of Incorporation  based
on the  actual  Votes  entitled  to be  voted  at such  meeting  (excluding  any
estimation of any kind,  including as to who would have been entitled to 5 Votes
per share if such  shareholders  had taken the  requisite  steps to obtain  such
Vote).

         "Dividend"  means any dividend or  distribution on or in respect of the
Common Stock of the Corporation,  whether in cash,  additional  shares of Common
Stock or other property.

         "Exchange Act" means the  Securities  Exchange Act of 1934, as amended,
and the regulations promulgated thereunder.

         "Holder"  means a holder  of  record  of a share or  shares of Series A
Convertible Preferred Stock.

         "Investment Agreement" means the Agreement, dated as of August 6, 1997,
between the Investor and the  Corporation,  as amended and/or restated from time
to time.

         "Investor" means E.I. du Pont de Nemours and Company.

         "Investor Group" shall have the meaning set forth in the Investment
Agreement.

         "Investor Group Total Ownership  Percentage" means, with respect to the
Investor Group calculated at a particular point in time, the ratio, expressed as
a  percentage,  of (a) the total number of shares of Common  Stock  Beneficially
Owned by the Investor Group and issuable upon conversion of (whether or not then
convertible),  or otherwise  constituting the economic equivalent of, all Common
Securities (as defined in the Investment  Agreement)  Beneficially  Owned by the
Investor  Group,  over (b) the total  number of  shares  of  Common  Stock  then
outstanding  and the number of shares of Common Stock  issuable upon  conversion
(whether or not then  convertible)  of, or otherwise  constituting  the economic
equivalent  of, all  outstanding  Common  Securities;  provided that in no event
shall the Investor Group Total  Ownership  Percentage of all Holders of Series A
Convertible Preferred Stock be greater than 20%.

         "Iowa Law" shall mean the Business Corporation Act of the State of Iowa

         "Liquidation Preference" has the meaning specified in Section 4 above.

         "Other Investor Affiliate" shall have the meaning set forth in the
Investment Agreement.

         "Per Share  Vote  Amount"  means in respect of any record  date for any
meeting of stockholders (or action by written consent in lieu of a meeting) that
number of Votes per share of Series A Convertible  Preferred  Stock equal to (x)
the Total Preferred Vote Amount as of such record date amount divided by (y) the
number of shares of Series A Convertible  Preferred Stock outstanding as of such
record date.

         "Person"  means  any  individual,  corporation,  company,  association,
partnership,  joint venture,  limited liability company, trust or unincorporated
organization, group (within the meaning of Rule 13d-5 under the Exchange Act) or
a government or any agency or political subdivision thereof.

         "Series A Convertible Preferred Stock" has the meaning specified in
Section 1 above.

         "Stock  Books"  means  the  stock  transfer  books  of the  Corporation
relating to its Common Stock and Preferred Stock.

         "Subsidiary"  means, as to any Person, any other Person more than fifty
percent  (50%) of the shares of the voting  stock or other  voting  interests of
which are owned or controlled, or the ability to select or elect more than fifty
percent  (50%)  of the  directors  or  similar  managers  is held,  directly  or
indirectly,  by such first Person or one or more of its  Subsidiaries or by such
first Person and one or more of its Subsidiaries.  A Subsidiary that is directly
or indirectly  wholly-owned  by another Person except for directors'  qualifying
shares shall be deemed wholly-owned for purposes of this Agreement.

         "Surrender Date" has the meaning specified in Section 6 above.

         "13D Group" shall mean any group of Persons who,  with respect to those
acquiring,  holding,  voting or disposing of Voting Securities  would,  assuming
ownership of the requisite  percentage  thereof, be required under Section 13(d)
of the Exchange Act and the rules and regulations thereunder to file a statement
on Schedule 13D with the Securities and Exchange Commission as a "person" within
the meaning of Section  13(d)(3) of the Exchange Act, or who would be considered
a "person" for purposes of Section 13(g)(3) of the Exchange Act.

         "Total  Preferred Vote Amount" means, in respect of the record date for
any meeting (or action by written  consent in lieu of a meeting) of shareholders
of the Corporation to vote on any matter,  an aggregate number of Votes equal to
(a) the Common Voting Power as of such record date multiplied by (b) a fraction,
the  numerator  of  which  is the  Investor  Group  Total  Ownership  Percentage
(expressed as a fraction  carried to two decimal  places) as of such record date
and the  denominator of which is 1.00 minus the Investor  Group Total  Ownership
Percentage  (expressed as a fraction  carried to two decimal  places) as of such
record date;  provided that in no event shall the Total Preferred Vote Amount be
greater than 20% of Total Voting Power.

        "Total Voting Power" means in respect of any record date for any meeting
of  stockholders  (or  action  by  written  consent  in lieu of a  meeting)  the
aggregate  Votes  represented  by all  then  outstanding  Voting  Securities  as
determined  by the  Board in  accordance  with the  procedures  set forth in the
Articles of Incorporation based on the actual Votes entitled to be voted at such
meeting  (excluding any  estimation of any kind,  including as to who would have
been entitled to 5 Votes per share if such  shareholders had taken the requisite
steps to obtain such Vote).

        "Votes" shall mean, at any time, with respect to any Voting  Securities,
the total  number of votes that would be  entitled  to be cast by the holders of
such Voting Securities  generally (by the terms of such Voting  Securities,  the
Articles of  Incorporation  or any certificate of  designations  for such Voting
Securities)  in a meeting  for the  election  of  directors  held at such  time,
including the votes that would be able to be cast by holders of shares of Series
A Convertible Preferred Stock in accordance with the procedures set forth in the
Articles of  Incorporation  based on the actual  number of Votes  entitled to be
voted at such meeting (excluding any estimation of any kind, including as to who
would have been entitled to 5 Votes per share if such shareholders had taken the
requisite steps to obtain such Vote).






        "Voting  Securities"  means the  shares of Common  Stock,  the  Series A
Convertible Preferred Stock and any other securities of the Corporation entitled
to vote generally for the election of directors,  and any securities (other than
employee  stock  options)  which  are   convertible   into,  or  exercisable  or
exchangeable for, Voting Securities.

IN WITNESS  WHEREOF,  Pioneer  Hi-Bred  International,  Inc.,  has  caused  this
Certificate to be made under the seal of the Corporation and signed and attested
by the undersigned officers of the Corporation this 9th day of September, 1997.

                                            PIONEER HI-BRED INTERNATIONAL, INC.

                                            /s/    John D. James
                                            By     John D. James
                                            Title: Senior Vice Preisdent

(Corporate Seal)

Attest:

/s/     Jerry L. Chicoine
By:     Jerry L. Chicoine
Title:  Senior Vice President and
          Chief Financial Officer






                           ARTICLES OF CORRECTION FOR
                       PIONEER HI-BRED INTERNATIONAL, INC.

                  TO: SECRETARY OF STATE OF THE STATE OF IOWA:




        Pursuant  to ss.  490.124  of the Iowa  Business  Corporation  Act,  the
undersigned corporation adopts the following Articles of Correction:

     1.   The name of the corporation is Pioneer Hi-Bred International, Inc.

     2.   A description of the document to be corrected is as follows:

          Articles of  Amendment of the Third  Restated and Amended  Articles of
          Incorporation  of Pioneer Hi-Bred  International,  Inc. in the form of
          the Certificate of Designations attached as Exhibit A thereto.

     3.   The  document to be corrected  was filed by the  Secretary of State on
          September 10, 1997.

     4.   The incorrect statements in the document to be corrected are contained
          in paragraphs  (i),  (iii) and (iv) of Section 6(a) thereof and in the
          case of each such  paragraph  the  incorrect  item is the reference to
          "[100]*"  appearing  therein and the footnote referred to by each such
          reference.

     5.   The  document was  incorrect  because it should have read as set forth
          below in paragraph 6 and because the corresponding  footnote should in
          each case have been deleted.

     6.   The  following  is the  correct  statement  and it should  replace the
          incorrect  statement in the case of each of the foregoing  paragraphs:
          "100," and there should be no footnote.

Dated this 16th day of September, 1997.

                                            PIONEER HI-BRED INTERNATIONAL, INC.


                                            /s/    Jerry L. Chicoine
                                            By:    Jerry L. Chicoine
                                            Title: Senior Vice President and
                                                       Chief Financial Officer








                              ARTICLES OF AMENDMENT
                                     OF THE
              THIRD RESTATED AND AMENDED ARTICLES OF INCORPORATION
                                       OF
                       PIONEER HI-BRED INTERNATIONAL, INC.


To the Secretary of State
  of the State of Iowa

        Pursuant to the  provisions  of Section  490.1006  of the Iowa  Business
Corporation  Act, the undersigned  corporation  hereby amends its Third Restated
and Amended Articles of Incorporation (the "Articles of Incorporation"), and for
that purpose, submits the following statement:

1.   The name of the  corporation is Pioneer  Hi-Bred  International,  Inc. (the
     "Corporation").

2.   The Third Restated and Amended Articles of Incorporation are hereby amended
     to create a new class of Common Stock called Class B Common Stock, the text
     of which is attached  hereto as Exhibit A. In addition,  upon the filing in
     the  Office  of the  Secretary  of  State  of the  State  of  Iowa  of this
     Certificate of Amendment,  (i) each of the outstanding 164,445.86 shares of
     Series  A  Convertible  Preferred  Stock  of  the  Corporation  issued  and
     outstanding  immediately  prior  to  such  filing  of this  Certificate  of
     Amendment  shall be  automatically  reclassified  and  changed  without any
     further  action  on the  part of the  Corporation  or  shareholders  of the
     Corporation into one hundred fully paid and nonassessable shares of Class B
     Common Stock,  and (ii) each of the 200,000  authorized  shares of Series A
     Convertible  Preferred  Stock  will  revert  to  serial  preferred  without
     designation  and the  Certificate  of  Designation  of Series A Convertible
     Preferred Stock will cease to be in force and effect.

3.   The date of the adoption of the amendment was January 27, 1998.

4.   The amendment was approved by the shareholders. The designation,  number of
     outstanding  shares,  number of votes  entitled  to be cast by each  voting
     group entitled to vote  separately on the amendment and the number of votes
     of each voting group indisputably represented at the meeting is as follows:



                                                         Votes Entitled to      Votes Represented
      Designation of Group         Shares Outstanding   be Cast on Amendment      at Meeting
      --------------------         -------------------  --------------------    -------------------              
                                                                                 
Common                               65,758,411.083         158,453,436           121,712,477
Series A Convertible Preferred       65,922,856.943*        198,066,794           161,325,835
    and Common



*    65,758,411.083   shares  of  Common  and  164,445.86  shares  of  Series  A
     Convertible   Preferred,   which  under  certain   circumstances  are  each
     convertible into 100 shares of Common Stock

5.  The total number of votes cast for and against the  amendment by each voting
    group entitled to vote separately on the amendment is as follows:

          Voting Group               Votes For                     Votes Against

Common                               115,512,282                      1,213,910
Series A Convertible Preferred       155,125,640                      1,213,910
    and Common

6.  The  number  of votes  cast  for the  amendment  of each  voting  group  was
    sufficient for approval by that voting group.

7.  The effective  date and time of this document is the time and date of filing
    of this  document  in the office of the  Secretary  of State of the State of
    Iowa.

        Dated:  January 29, 1998.
                                           PIONEER HI-BRED INTERNATIONAL, INC.



                                            /s/    Jerry L. Chicoine
                                            By:    Jerry L. Chicoine
                                            Title: Senior Vice President and
                                                      Chief Financial Officer






                                    EXHIBIT A

                                   AMENDMENT TO THE
                              THIRD RESTATED AND AMENDED
                              ARTICLES OF INCORPORATION
                                          OF
                         PIONEER HI-BRED INTERNATIONAL, INC.

                                          I.

        The  Corporation's  Third Restated and Amended Articles of Incorporation
is hereby  amended by deleting  clause (ii) of  paragraph A of Article IV in its
entirety and inserting the following so that clauses (ii) and (iii) of paragraph
A of Article IV shall hereafter read as follows:


        "(ii) 120,000,000  shares of Class B Common Stock without par value, and
(iii) 10,000,000 shares,  consisting of one class designated as serial preferred
without par value."

                                         II.
        The  Corporation's  Third Restated and Amended Articles of Incorporation
is hereby  amended by  deleting  paragraph D of Article IV in its  entirety  and
inserting the following so paragraph D and E of Article IV shall  hereafter read
as follows:

        "D. 1. Designation; Class and Amount; Certain Definitions. The series of
Class B Common Stock, the issuance of which is hereby authorized, shall comprise
of  120,000,000  shares the  distinctive  serial  designation  of which shall be
"Class B Common Stock." Each share of Class B Common Stock shall be identical in
all respects with all other shares of Class B Common Stock. The number of shares
of Class B Common  Stock  which  are  purchased  or  otherwise  acquired  by the
Corporation or converted into Common Stock shall be canceled and shall revert to
authorized but unissued shares of Class B Common Stock.  The  Corporation  shall
not issue,  sell or  otherwise  transfer  shares of Class B Common  Stock to any
Person other than the members of the Investor Group.  Certain  capitalized terms
used herein have the meanings specified therefor in Section 9 below.

               2.  Dividends.   (a)  Except  as  set  forth  in  the  Investment
Agreement,  each Holder of shares of Class B Common Stock shall participate with
the holders of Common Stock in all Dividends (other than Dividends in respect of
which (x) an adjustment is made in the number of shares of Common Stock issuable
upon conversion as prescribed in Section  6(c)(i) or Section  6(c)(iii) below or
(y) an adjustment is not required to be so made because of the  satisfaction  of
the proviso to the end of the first sentence of Section 6 (c)(i)  below),  when,
as and if declared by the Board and paid or distributed by the Corporation on or
in respect of the Common  Stock on a share for share basis and in like tenor and
forms as the  Dividend  paid on the  Common  Stock as if all  shares  of Class B
Common Stock were  converted  into the number of shares of Common Stock (whether
or not the Class B Common Stock is then so convertible) calculated in accordance
with Section 6 below,  immediately  prior to the record date for such  Dividend.
Except as set forth  above,  holders of shares of Class B Common Stock shall not
be entitled to receive any dividends. Except to the extent payable in respect of
dividends  paid on the Common  Stock,  no  interest,  or sum of money in lieu of
interest,  shall be payable in respect of any  dividend  payment or  payments on
shares of Class B Common Stock.

                      (b)    Dividends on the Class B Common Stock in respect of
each Dividend shall be payable,  when and if declared by the Board of Directors,
concurrently  with each date of payment  (each such date,  a  "Dividend  Payment
Date") by the Corporation of Dividends on the Common Stock. Dividends payable in
cash  shall  be paid by wire  transfer  in  immediately  available  funds to the
accounts  designated by the respective  Holders in written  notices given to the
Corporation  at least two  Business  Days prior to the  payment  date or by such
other means as may be agreed to by the Corporation and the respective Holders.

                      (c)    The Corporation will cause written notice of each
Dividend  on the Class B Common  Stock to be given to each  Holder  within  five
Business Days after it is determined by the Board of Directors.

           3.  Voting Rights.  (a)  Except as otherwise provided herein, or
expressly provided in the Investment Agreement or as required by law, the 
Holders of Class B Common Stock shall not be entitled to any Vote.

                      (b)    At any meeting called for the purpose of voting on 
(or acting by written  consent  with  respect to) any matter to be voted upon by
the holders of Common  Stock of the  Corporation, the holders of shares of Class
B Common Stock and the holders of shares of Common Stock shall vote  together as
one  class  on all  matters  so  submitted  to a  vote  of  stockholders  of the
Corporation.  At any such  meeting  or in  connection  with any such  action  by
written  consent,  each share of Class B Common  Stock  shall  carry,  as of the
record date  applicable  to such vote,  a number of votes equal to the Per Share
Vote Amount as calculated by the Corporation for such meeting.

                      (c)    In accordance with Section 6.2(b) of the Investment
Agreement,  the  Corporation  will cause written  notice of any vote as to which
holders of Common Stock are entitled to vote as a separate class or voting group
under the Articles of Incorporation or Iowa Law (a "Class Vote"), to be given to
each Holder at least 15 Business Days prior to such Class Vote.

           4.  Liquidation  Preference.   In  the  event  of  any  voluntary  or
involuntary  liquidation,  dissolution  or  winding  up of  the  affairs  of the
Corporation,  the  Holders of shares of Class B Common  Stock  then  outstanding
shall be entitled, for each share of Class B Common Stock, to be paid out of the
assets of the Corporation  available for  distribution to its  stockholders  the
amount of cash or other  property  that would be payable on the number of shares
of Common Stock then  issuable  upon  conversion of such share of Class B Common
Stock  (whether or not then  convertible)  (such amount  payable being  adjusted
appropriately to the extent required in Section 6 (c) below to reflect any stock
split,  stock dividend,  reverse stock split, or any transaction with comparable
effect upon the Common Stock) (the "Liquidation  Preference").  This entitlement
of the Holders of shares of Class B Common  Stock,  to the extent  equal to $.01
for each share of Class B Common  Stock,  shall be satisfied  before any similar
payment  shall be made or any assets  distributed  to the  holders of the Common
Stock or any other  security  junior  in rank to the Class B Common  Stock as to
distribution  of assets  upon such  dissolution,  liquidation  or winding up and
otherwise  shall be  satisfied  on a pari passu  basis  with the  holders of the
Common Stock. If the assets of the Corporation are not sufficient to pay in full
the liquidation payments payable to all of the Holders of the outstanding shares
of Class B Common Stock, then the Holders of all such shares shall share ratably
in such distribution of assets in accordance with the liquidation  preference to
which they are entitled. For the purposes of this section, neither the voluntary
sale, conveyance, exchange or transfer (for cash, shares of stock, securities or
other  consideration)  of all or substantially  all of the property or assets of
the Corporation nor the  consolidation  or merger of the Corporation with one or
more other  corporations  shall be deemed to be a  liquidation,  dissolution  or
winding up,  voluntary or involuntary,  unless such voluntary sale,  conveyance,
exchange or transfer shall be in connection  with a dissolution or winding up of
the business of the Corporation.

           5.  Restrictions on Transfer.  The shares of Class B Common Stock are
subject to the provisions of the Investment  Agreement (including the provisions
thereof restricting transfer of such stock).

           6. Conversion.  (a) (i) Concurrently  with the transfer of Beneficial
Ownership  of any share of Class B Common  Stock to any  Person  other  than the
Investor or another member of the Investor  Group or Other  Investor  Affiliate,
such  share  of Class B Common  Stock  shall  convert  into one  fully-paid  and
non-assessable  share of Common Stock (as adjusted pursuant to Section 6(c)), in
accordance with the procedures provided in clause (b) of this Section 6.

                      (ii)  At any time (x) at the direction of the Corporation,
but only if the  Corporation  intends to  recommend  approval of a Voting  
Amendment  (as defined in the Investment Agreement), and (y) at the direction of
the Investor, following the approval and effectiveness of a Voting Amendment,  
shares of Class B  Common  Stock  shall  be   mandatorily   convertible   into  
fully-paid  and non-assessable  shares of Common Stock, with each share of Class
B Common Stock being converted into one share of Common Stock (as adjusted 
pursuant to Section 6(c)).

                      (iii) At any time  that all  outstanding  shares of Common
Stock (or whatever security  received upon conversion or exchange  thereof) have
the same vote per share, if any,  without any time-phased  voting, all shares of
Class B Common Stock shall be convertible into fully-paid and  non-assessable  
shares of Common Stock,  with each such share of Class B Common Stock being 
converted into one share of Common Stock (as adjusted pursuant to Section 6(c)).

                      (iv) Except as set forth in this Section 6(a),  the shares
of Class B Common Stock are not convertible at the option of the Holder thereof.

               (b) (i) Any Holder of shares of Class B Common Stock required (or
in the case of clause (iii) above  requesting) to convert any or all such shares
into Common Stock shall surrender the  certificate(s)  evidencing such shares of
Class B Common Stock of the Holder at the office of the transfer agent appointed
for  the  purpose  of  such  conversion  by the  Corporation.  Such  surrendered
certificate(s),  if the Corporation shall so require,  shall be duly endorsed to
the Corporation or in blank, or accompanied by proper instruments of transfer to
the Corporation or in blank.

                      (ii)  The Corporation shall, within one Business Day after
such surrender of certificates  evidencing shares of Class B Common Stock 
accompanied by written notice and in compliance with any other conditions 
contained herein, issue and deliver,  or cause to be issued and  delivered,  to 
the  Person(s) for whose account such certificate(s) evidencing shares of Class 
B Common Stock were so  surrendered,   or  to  the  nominee(s)  of  such   
Person(s),   certificates representing  the number of full  shares of Common  
Stock to which  such  Person shall  be  entitled  pursuant  to  the 
then-applicable  conversion  rate.  Such conversion shall be deemed to have been
made on the date of such  surrender  of the  certificate(s)  evidencing  shares 
of Class B Common  Stock to be converted (the  "Surrender  Date") and the
Person(s)  entitled to receive the Common Stock deliverable  upon  conversion of
such Class B Common Stock shall be treated for all  purposes  as the record  
holder(s)  of such  Common  Stock on such date and thereafter.  Conversion  of 
Class B Common  Stock may  otherwise  be achieved in accordance with such 
procedures as the Corporation and a majority of the Holders may agree.

                      (iii) In the event  that  fewer than all shares of Class B
Common Stock represented by a surrendered  certificate are to be converted 
hereunder,  a new certificate shall be issued at the Corporation's expense
representing the shares of Class B Common Stock not so converted.

                      (iv) In  connection  with the  conversion of any shares of
Class B Common  Stock,  no fractions  of shares of Common Stock shall be issued,
but in lieu  thereof the  Corporation  shall pay a cash  adjustment  in respect 
of such fractional interest in an amount equal to such fractional interest 
multiplied by the Market Price (as defined in the  Investment  Agreement)  per 
share of Common Stock on the day on which such shares of Class B Common Stock 
are deemed to have been converted.

               (c) The  conversion  rate shall be adjusted  from time to time as
follows:

                      (i)    In case the Corporation shall, at any time or from 
time to time while any of the shares of Class B Common Stock are  outstanding,  
(A) subdivide or  reclassify  its  outstanding  shares of Common Stock into a 
larger number of shares  (including a  subdivision  effected by  declaring  and
paying a Dividend payable in additional  shares of Common Stock), or (B) combine
or reclassify its outstanding  shares  of  Common  Stock  into a smaller  number
of  shares, the conversion rate in effect immediately prior to such action shall
be adjusted so that the Holder of any shares of Class B Common Stock thereafter
surrendered for conversion  shall be entitled  to receive  the number of shares 
of Common  Stock which such Holder would have owned or have been entitled to 
receive  immediately following  such  action had such shares of Class B Common  
Stock been  converted immediately prior thereto (which  adjustments shall be in 
lieu of payment of any Dividend on the Class B Common Stock);  provided that no 
adjustment  pursuant to this  Section  6  (c)(i)  shall  be  made in  connection
with  a  subdivision, combination  or  reclassification  (including  by way of a
Dividend  payable in additional shares of Common Stock)  described  above if the
Corporation  shall concurrently  therewith subdivide,  combine or reclassify 
(including by way of a Dividend  payable in additional  shares of Class B Common
Stock) the outstanding Class B Common  Stock on the same  basis as the Common  
Stock is so  subdivided, combined or  reclassified.  An adjustment made pursuant
to this Section 6(c)(i) shall become effective  immediately after the close of 
business on the effective date of a subdivision,  reclassification  or 
combination.  If, as a result of an adjustment  made pursuant to this Section 
6(c)(i), the Holder of any shares of Class B Common Stock thereafter surrendered
for conversion shall become entitled to receive shares of two or more classes of
capital  stock of the  Corporation, the Board of  Directors  shall make an  
appropriate allocation  of the adjusted conversion rate between or among  shares
of such  classes of capital  stock in accordance  with the  entitlements  of the
Common Stock  underlying  the Class B Common Stock in connection with such 
adjustment.

                      (ii)  Whenever an  adjustment  in the  conversion  rate is
required, the Corporation  shall  forthwith  place on file with its Transfer
Agent a statement signed  by its  Chief  Executive  Officer,  Chief  Financial 
Officer  or a Vice President  and by its  Secretary,  Assistant  Secretary,  
Treasurer or Assistant Treasurer,  stating the adjusted  conversion rate 
determined as provided herein. Such  statements  shall set forth in  reasonable 
detail  such facts as shall be necessary to show the reason and the manner of
computing such adjustment.

                      (iii) In the event that prior to the issuance of the Class
B Common
Stock the Company shall (A) subdivide or reclassify  its  outstanding  shares of
Common Stock into a larger number of shares (including a subdivision effected by
declaring or paying a Dividend payable in additional  shares of Common Stock) or
(B) combine or reclassify its outstanding  shares of Common Stock into a smaller
number of shares,  the conversion  ratio  applicable to the Class B Common Stock
shall be appropriately adjusted.

               (d)    (i) The Corporation shall  at all times  reserve  and keep
available,  free from  preemptive  rights,  out of its  authorized  and unissued
stock,  such number of shares of its Common  Stock as shall from time to time be
sufficient  to effect the  conversion of all shares of Class B Common Stock from
time to time  outstanding,  solely for the purpose of effecting such conversion.
The  Corporation  shall,  from time to time, in accordance  with the laws of the
State of Iowa,  increase the  authorized  number of shares of Common Stock if at
any time the number of shares of authorized and unissued  Common Stock shall not
be sufficient to permit the  conversion  of all the then  outstanding  shares of
Class B Common Stock.

                      (ii)   The Corporation will pay any and all stamp and  
transfer taxes that may be payable in respect of the  issuance  or delivery of 
shares of Common Stock upon  conversion of shares of Class B Common Stock 
pursuant  hereto.  The Corporation shall not, however,  be required to pay any
tax which may be payable in respect of any  transfer  involved in the  issuance
and delivery of shares of Common  Stock in a name  other  than that in which the
shares of Class B Common Stock so converted were registered and no such issuance
or delivery  shall be made  unless  and until the  person  requesting  such  
issuance  has paid to the Corporation the amount of any such tax or has 
established to the satisfaction of the Corporation that such tax has been paid.

               (e) In case of (i) any  reclassification or change of outstanding
shares of Common Stock (other than a change in par value or from par value to no
par value or from no par value to par value,  or as a result of a subdivision or
combination) or (ii) any  consolidation or merger of the Corporation with one or
more  other  corporations  (other  than a  consolidation  or merger in which the
Corporation  is the  continuing  corporation  and which  does not  result in any
reclassification  or change of outstanding  shares of Common Stock issuable upon
conversion  of Class B Common  Stock) or (iii) any sale or conveyance to another
corporation or other entity of all or  substantially  all of the property of the
Corporation,  then  the  Corporation,  or such  successor  corporation  or other
entity, as the case may be, shall make appropriate  provision so that the holder
of each share of Class B Common Stock then  outstanding  shall have the right to
convert  such  share  into the  kind  and  amount  of  shares  of stock or other
securities  and  property  receivable  upon such  consolidation,  merger,  sale,
reclassification,  change or  conveyance  by a holder of the number of shares of
Common  Stock  into which such  shares of Class B Common  Stock  might have been
converted    immediately   prior   to   such   consolidation,    merger,   sale,
reclassification,  change or conveyance, subject to adjustment which shall be as
nearly  equivalent  as may be  practicable  to the  adjustments  provided for in
Section 6(c)(to the extent adjustment would be required pursuant to Section 6(c)
above).  If the holders of Common Stock are entitled to elect the  consideration
payable  pursuant  to any  consolidation,  merger,  sale,  conveyance  or  other
transaction  or event set forth  above,  the  Holders  also shall be entitled to
elect between such forms of  consideration.  The  provisions  of this  paragraph
shall apply similarly to successive consolidations,  mergers, sales, conveyances
or other transactions or events.

               (f) Whenever the number of shares of Common Stock into which each
share of Class B Common  Stock is  convertible  is  adjusted as provided in this
Section  6, the  Corporation  shall  promptly  mail to the  Holders  a notice in
accordance  with  Section 8 below  stating  that the  number of shares of Common
Stock  into which the shares of Class B Common  Stock are  convertible  has been
adjusted  and  setting  forth the new  number  of  shares  of  Common  Stock (or
describing the new stock,  securities,  cash or other  property) into which each
share of Class B Common Stock is convertible,  as a result of such adjustment, a
brief  statement of the facts  requiring  such  adjustment  and the  computation
thereof, and when such adjustment became effective.

           7. Limited Priority. The Class B Common Stock shall, to the extent of
the  Liquidation  Preference  set  forth in  Section  4, be senior in rank as to
distribution  of assets upon any  liquidation,  dissolution or winding up of the
affairs  of the  Corporation,  to the  Common  Stock,  or any  class  of  equity
securities  of the  Corporation  which by its  terms  are  junior to the Class B
Common Stock,  unless the Holders of 66 2/3 percent of the outstanding shares of
the Class B Common Stock shall otherwise consent.

           8. Notices.  The  Corporation  shall provide notice to each Holder of
any  action  taken or  proposed  to be taken  or any  determination  made by the
Corporation and/or the Holder under the terms of this Third Restated and Amended
Articles of  Incorporation.  Notice of any such action or  determination  by the
Corporation  and/or the Holder and all other  notices  and other  communications
provided for in this Third Restated and Amended Articles of Incorporation  shall
be delivered by facsimile and by reputable overnight courier,

           (a) If to the Company, to:


           Pioneer Hi-Bred International, Inc.
           800 Capital Square, 400 Locust Street
           Des Moines, Iowa  50309
           Attention:  General Counsel
           Telephone:  (515) 248-4800
           Facsimile:  (515) 248-4844

           with a copy to:



           Fried, Frank, Harris, Shriver & Jacobson
           One New York Plaza
           New York, New York 10004
           Telephone:  (212) 859-8000
           Facsimile:  (212) 859-4000
           Attn.:  Stephen Fraidin

           or such other address as the Corporation shall have furnished to the
Holders in writing,

            (b) if to a Holder,  to the  address  and  facsimile  number of such
Holder listed on the Stock Books of the Corporation.

           9. Definitions.  Certain capitalized terms are used herein as defined
below:

               "Affiliate" of a Person has the meaning set forth in Rule 12b-2 
under the Exchange Act.

               "Articles of Incorporation"  means the Third Restated and Amended
Articles of Incorporation of the Corporation, as amended from time to time.

               "Beneficially  Owned" with respect to any securities means having
"beneficial  ownership" of such securities (as determined pursuant to Rule 13d-3
under the Exchange Act, as in effect on the date hereof,  without  limitation by
the 60-day  provision in paragraph  (d)(1)(i)  thereof).  The terms  "Beneficial
Ownership" and "Beneficial Owner" have correlative meanings.

               "Board" means the Board of Directors of the Corporation.

               "Business Day" means any day other than a Saturday,  Sunday, or a
day on  which  banking  institutions  in the  State of Iowa  are  authorized  or
obligated by law or executive order to close.

               "Class B Common Stock" has the meaning specified in Section 1
above.

               "Common Stock" means the Common Stock, par value $1.00 per share,
of the Corporation.

               "Common  Voting Power"  means,  in respect of any record date for
any meeting of stockholders  (or action by written consent in lieu of a meeting)
the aggregate Votes represented by all then outstanding  Voting Securities other
than the Class B Common Stock as determined by the Board in accordance  with the
procedures set forth in the Articles of Incorporation  based on the actual Votes
entitled to be voted at such  meeting  (excluding  any  estimation  of any kind,
including  as to who  would  have  been  entitled  to 5 Votes  per share if such
shareholders had taken the requisite steps to obtain such Vote).

               "Dividend" means any dividend or distribution on or in respect of
the  Common  Stock of the  Corporation,  whether in cash,  additional  shares of
Common Stock or other property.

                "Exchange  Act" means the  Securities  Exchange Act of 1934,  as
amended, and the regulations promulgated thereunder.

               "Holder" means a holder of record of a share or shares of Class B
Common Stock.

               "Investment Agreement" means the Agreement, dated as of August 6,
1997, between the Investor and the Corporation,  as amended and/or restated from
time to time.

               "Investor" means E.I. du Pont de Nemours and Company.

                "Investor Group" shall have the meaning set forth in the 
Investment Agreement.

               "Investor Group Total Ownership  Percentage"  means, with respect
to the  Investor  Group  calculated  at a particular  point in time,  the ratio,
expressed  as a  percentage,  of (a) the total  number of shares of Common Stock
Beneficially  Owned by the  Investor  Group  and  issuable  upon  conversion  of
(whether  or not then  convertible),  or  otherwise  constituting  the  economic
equivalent of, all Common  Securities  (as defined in the Investment  Agreement)
Beneficially Owned by the Investor Group, over (b) the total number of shares of
Common Stock then  outstanding and the number of shares of Common Stock issuable
upon conversion (whether or not then convertible) of, or otherwise  constituting
the economic equivalent of, all outstanding Common Securities;  provided that in
no event shall the Investor Group Total  Ownership  Percentage of all Holders of
Class B Common Stock be greater than 20%.

                "Iowa Law" shall mean the Business  Corporation Act of the State
of Iowa.

               "Liquidation Preference" has  the  meaning specified in Section 4
above.

               "Other Investor  Affiliate"  shall  have the meaning set forth in
the Investment Agreement.

               "Per Share Vote  Amount"  means in respect of any record date for
any meeting of stockholders  (or action by written consent in lieu of a meeting)
that  number of Votes per share of Class B Common  Stock  equal to (x) the Total
Preferred Vote Amount as of such record date amount divided by (y) the number of
shares of Class B Common Stock outstanding as of such record date.

               "Person" means any individual, corporation, company, association,
partnership,  joint venture,  limited liability company, trust or unincorporated
organization, group (within the meaning of Rule 13d-5 under the Exchange Act) or
a government or any agency or political subdivision thereof.

               "Stock Books" means the stock transfer  books of the  Corporation
relating to its Common Stock and Preferred Stock.

               "Subsidiary"  means, as to any Person, any other Person more than
fifty percent (50%) of the shares of the voting stock or other voting  interests
of which are owned or  controlled,  or the  ability to select or elect more than
fifty percent (50%) of the  directors or similar  managers is held,  directly or
indirectly,  by such first Person or one or more of its  Subsidiaries or by such
first Person and one or more of its Subsidiaries.  A Subsidiary that is directly
or indirectly  wholly-owned  by another Person except for directors'  qualifying
shares shall be deemed wholly-owned for purposes of this Agreement.

               "Surrender Date" has the meaning specified in Section 6 above.

               "13D Group" shall mean any group of Persons who,  with respect to
those  acquiring,  holding,  voting or  disposing  of Voting  Securities  would,
assuming  ownership  of the  requisite  percentage  thereof,  be required  under
Section  13(d) of the Exchange Act and the rules and  regulations  thereunder to
file a statement on Schedule 13D with the Securities and Exchange  Commission as
a "person"  within the meaning of Section  13(d)(3) of the Exchange  Act, or who
would be considered a "person" for purposes of Section  13(g)(3) of the Exchange
Act.

               "Total  Preferred  Vote Amount"  means,  in respect of the record
date for any  meeting  (or  action by written  consent in lieu of a meeting)  of
shareholders  of the Corporation to vote on any matter,  an aggregate  number of
Votes equal to (a) the Common Voting Power as of such record date  multiplied by
(b) a fraction,  the  numerator of which is the Investor  Group Total  Ownership
Percentage  (expressed as a fraction  carried to two decimal  places) as of such
record date and the  denominator of which is 1.00 minus the Investor Group Total
Ownership Percentage  (expressed as a fraction carried to two decimal places) as
of such record date;  provided that in no event shall the Total  Preferred  Vote
Amount be greater than 20% of Total Voting Power.

               "Total  Voting Power" means in respect of any record date for any
meeting of stockholders  (or action by written consent in lieu of a meeting) the
aggregate  Votes  represented  by all  then  outstanding  Voting  Securities  as
determined  by the  Board in  accordance  with the  procedures  set forth in the
Articles of Incorporation based on the actual Votes entitled to be voted at such
meeting  (excluding any  estimation of any kind,  including as to who would have
been entitled to 5 Votes per share if such  shareholders had taken the requisite
steps to obtain such Vote).

               "Votes"  shall  mean,  at any time,  with  respect  to any Voting
Securities,  the total  number of votes that would be entitled to be cast by the
holders  of such  Voting  Securities  generally  (by the  terms  of such  Voting
Securities, the Articles of Incorporation or any certificate of designations for
such Voting  Securities) in a meeting for the election of directors held at such
time,  including the votes that would be able to be cast by holders of shares of
Class B Common Stock in accordance with the procedures set forth in the Articles
of  Incorporation  based on the actual  number of Votes  entitled to be voted at
such meeting  (excluding any  estimation of any kind,  including as to who would
have  been  entitled  to 5 Votes per  share if such  shareholders  had taken the
requisite steps to obtain such Vote).

               "Voting Securities" means the shares of Common Stock, the Class B
Common  Stock and any  other  securities  of the  Corporation  entitled  to vote
generally for the election of directors, and any securities (other than employee
stock options) which are convertible  into, or exercisable or exchangeable  for,
Voting Securities.

        E. The holder of any shares of such Common  Stock,  Class B Common Stock
or Serial  Preferred  Stock  shall  have no  preemptive  rights to  acquire  any
additional  shares of the  Corporation  or to acquire any treasury  stock of the
Corporation."







                              ARTICLES OF AMENDMENT
                                     OF THE
              THIRD RESTATED AND AMENDED ARTICLES OF INCORPORATION
                                       OF
                       PIONEER HI-BRED INTERNATIONAL, INC.


To the Secretary of State
  of the State of Iowa

        Pursuant to the  provisions  of Section  490.1006  of the Iowa  Business
Corporation  Act, the undersigned  corporation  hereby amends its Third Restated
and Amended Articles of Incorporation (the "Articles of Incorporation"), and for
that purpose, submits the following statement:

1.   The name of the corporation is Pioneer Hi-Bred International, Inc. (the 
     "Corporation").

2.  The Third Restated and Amended Articles of Incorporation  are hereby amended
    to increase the number of  authorized  shares of Common  Stock,  the text of
    which is attached hereto as Exhibit A.

3. The date of the adoption of the amendment was January 27, 1998.

4.  The amendment was approved by the shareholders.  The designation,  number of
    outstanding shares, number of votes entitled to be cast by each voting group
    entitled to vote separately on the amendment and the number of votes of each
    voting group indisputably represented at the meeting is as follows:



                                                         Votes Entitled to      Votes Represented
      Designation of Group         Shares Outstanding   be Cast on Amendment       at Meeting
      --------------------         ------------------   --------------------    -----------------                                  
                                                                                
Common                              65,758,411.083          158,453,436          121,712,477
Series A Convertible Preferred      65,922,856.943*         198,066,794          161,325,835
    and Common


*    65,758,411.083   shares  of  Common  and  164,445.86  shares  of  Series  A
     Convertible   Preferred,   which  under  certain   circumstances  are  each
     convertible into 100 shares of Common Stock

5.  The total number of votes cast for and against the  amendment by each voting
    group entitled to vote separately on the amendment is as follows:

          Voting Group                      Votes For              Votes Against
          ------------                      ----------             -------------
Common                                     109,971,563               10,891,420
Series A Convertible Preferred             149,584,921               10,891,420
    and Common

6.  The  number  of votes  cast  for the  amendment  of each  voting  group  was
    sufficient for approval by that voting group.






7.  The effective  date and time of this document is the time and date of filing
    of this  document  in the office of the  Secretary  of State of the State of
    Iowa.

        Dated:  January 29, 1998.

                                            PIONEER HI-BRED INTERNATIONAL, INC.



                                            /s/    Jerry L. Chicoine
                                            By:    Jerry L. Chicoine
                                            Title: Senior Vice President and
                                                       Chief Financial Officer







                                      EXHIBIT A

                                   AMENDMENT TO THE
                 THIRD RESTATED AND AMENDED ARTICLES OF INCORPORATION
                                          OF
                         PIONEER HI-BRED INTERNATIONAL, INC.


                                      ARTICLE IV

        Article  IV of  the  Articles  of  Incorporation  shall  be  amended  by
replacing the following language of paragraph A:

           A.  The  aggregate  amount  of  authorized   capital  stock  of  this
     Corporation  shall be  $150,000,000  divided into (i)  150,000,000  shares,
     consisting of one class  designated as common and having a par value of One
     Dollar ($1.00) per share,

with the following language:

           A.  The  aggregate  amount  of  authorized   capital  stock  of  this
     Corporation  shall be  $600,000,000  divided into (i)  600,000,000  shares,
     consisting of one class  designated as common and having a par value of One
     Dollar ($1.00) per share,








                              ARTICLES OF AMENDMENT
                                     OF THE
              THIRD RESTATED AND AMENDED ARTICLES OF INCORPORATION
                                       OF
                       PIONEER HI-BRED INTERNATIONAL, INC.


To the Secretary of State
  of the State of Iowa

        Pursuant to the  provisions  of Section  490.1006  of the Iowa  Business
Corporation  Act, the undersigned  corporation  hereby amends its Third Restated
and Amended Articles of Incorporation (the "Articles of Incorporation"), and for
that purpose, submits the following statement:

     1.   The name of the  corporation is Pioneer  Hi-Bred  International,  Inc.
          (the "Corporation").

     2.   On March 10, 1998 the  Corporation  adopted an  amendment to its Third
          Restated and Amended Articles of Incorporation,  as amended,  attached
          hereto as Exhibit A.

     3.   The Third Restated and Amended  Articles of  Incorporation  are hereby
          amended.

     4.   The  amendment  was duly  adapted  by the  Board of  Directors  of the
          Corporation without shareholder  approval,  as shareholder approval is
          not  required  pursuant  to  Section  490.602  of  the  Iowa  Business
          Corporation Act.

     5.   The  effective  date and time of this document is the time and date of
          filing of this document in the office of the Secretary of State of the
          State of Iowa.

          Dated: September 14, 1998.

                                        PIONEER HI-BRED INTERNATIONAL, INC.


                                            /s/    Jerry L. Chicoine
                                            By:    Jerry L. Chicoine
                                            Title: Executive Vice President,
                                                      Chief Operating Officer 
                                                      and Secretary







                                    EXHIBIT A

                                   AMENDMENT TO THE
                 THIRD RESTATED AND AMENDED ARTICLES OF INCORPORATION
                                          OF
                         PIONEER HI-BRED INTERNATIONAL, INC.

        The Designation, Preferences and Rights of Series A Junior Participating
Preferred  Stock of the  Corporation  ("Designation")  was filed on February 25,
1997 with the Secretary of the State of the State of Iowa.

        Paragraph  1(a) of the  Designation  shall be amended by deleting in its
entirety and substituting the following language as Paragraph 1(a):

        1.      Designation and Amount.

               (a) There shall be a series of Preferred Stock of the Corporation
        created out of the authorized  but unissued  shares of the capital stock
        of the  Corporation,  which series shall be  designated  Series A Junior
        Participating Preferred Stock (the "Participating  Preferred Stock"), to
        consist of six hundred thousand (600,000) shares, without par value.

        Paragraphs 2(a) and 2(b) of the Designation shall be amended by deleting
in their entirety and substituting the following language as Paragraphs 2(a) and
2(b):

        2.      Dividend Rate.

               (a) The holders of shares of Participating  Preferred Stock shall
        be  entitled  to  receive,  when,  as and if  declared  by the  Board of
        Directors  out of funds  legally  available  for the purpose,  quarterly
        dividends  payable in cash on the first day of each November,  February,
        May and August in each year (each such date being  referred to herein as
        a "Quarterly Dividend Payment Date"),  commencing on the first Quarterly
        Dividend Payment Date after the first issuance of a share or fraction of
        a share  of  Participating  Preferred  Stock,  in an  amount  per  share
        (rounded  to the  nearest  cent)  equal to the greater of (a) $90 or (b)
        1,000 times the  aggregate  per share amount of all cash  dividends  and
        1,000  times the  aggregate  per share  amount  (payable in kind) of all
        non-cash dividends or other  distributions other than a dividend payable
        in shares of Common Stock or a subdivision of the outstanding  shares of
        Common Stock (by reclassification or otherwise),  declared on the Common
        Stock,  par value of One Dollar  ($1.00) per share,  of the  Corporation
        (the "Common Stock") since the immediately  preceding Quarterly Dividend
        Payment Date, or, with respect to the first Quarterly  Dividend  Payment
        Date,  since the first  issuance  of any share or fraction of a share of
        Participating Preferred Stock.

               (b) On or after the  first  issuance  of any share or  fractional
        share of  Participating  Preferred  Stock,  no dividend on Common  Stock
        shall  be  declared   unless   concurrently   therewith  a  dividend  or
        distribution  is  declared  on  the  Participating  Preferred  Stock  as
        provided  in  paragraph  (a)  above;  and the  declaration  of any  such
        dividend on the Common Stock shall be expressly conditioned upon payment
        or  declaration  of and  provision  for a dividend on the  Participating
        Preferred  Stock  as  above  provided.  In  the  event  no  dividend  or
        distribution  shall have been  declared on the Common  Stock  during the
        period  between  any  Quarterly  Dividend  Payment  Date  and  the  next
        subsequent  Quarterly  Dividend  Payment  Date, a dividend of $90.00 per
        share on the Participating Preferred Stock shall nevertheless be payable
        on such subsequent Quarterly Dividend Payment Date.