PIONEER HI-BRED INTERNATIONAL, INC.
                                STOCK OPTION PLAN


1.   Establishment of the Plan.

     a)   The Company hereby establishes the Pioneer Hi-Bred International, Inc.
          Stock Option Plan (the "Plan").

     b)   Purpose.

          The  intent of the Plan is to  assure  that  executives  and other key
          employees  have a concrete  interest in the  long-term  success of the
          Company and to give such employees the long-term  perspective required
          in an industry which takes several years to develop a product,  and to
          align the interest of such employees  with the long-term  interests of
          shareholders.

2.   Definitions.

     a)   "Board" means the Board of Directors of Pioneer Hi-Bred International,
          Inc.

     b)   "Change  in  Control"  means (i) the  acquisition,  whether  directly,
          indirectly,  beneficially  (within  the  meaning  of Rule 13d-3 of the
          Securities and Exchange Act of 1934, as amended (the "1934 Act")),  or
          of record,  of  securities  of  Pioneer  Hi-Bred  International,  Inc.
          representing  twenty-five percent (25%) or more in number of any class
          of its then outstanding  voting securities by any "person" (within the
          meaning of Sections 13(d) and 14(d)(2) of the 1934 Act), including any
          corporation or group of associated  persons  acting in concert,  other
          than (A) the Corporation  and/or (B) any employee pension benefit plan
          (within the meaning of Section 3(2) of the Employee  Retirement Income
          Security  Act of 1974,  as  amended) of the  Corporation,  including a
          trust  established  pursuant to any such plan, or (ii) the  nomination
          and election of  twenty-five  percent  (25%) or more of the members of
          the Board of the Corporation without recommendation of such Board. The
          ownership  of record of 25% or more in number of any class of the then
          outstanding  voting  securities of the Corporation by a person engaged
          in the business of acting as nominee for unrelated  beneficial  owners
          shall  not in and of  itself  be  deemed  to  constitute  a Change  in
          Control.

     c)   "Committee" means the Compensation Committee of the Board of Directors
          of the Company or any successor committee.

     d)   "Company"   means  Pioneer  Hi-Bred   International,   Inc.,  an  Iowa
          Corporation and any division, subsidiary or affiliate thereof.

     e)   "Competition" shall mean (i) engaging, directly or indirectly, whether
          as an employee, independent contractor, consultant, or otherwise, in a
          business  similar to the business of the Company,  and/or (ii) owning,
          managing,  operating,  controlling,  being  employed  by or  having  a
          financial  interest in, or being  connected  in any manner  with,  the
          ownership,  management,  operation,  or  conduct  of any such  similar
          business,  provided  that  mere  ownership  (directly,  indirectly  or
          beneficially)  of the stock of a  corporation  representing  less than
          five percent (5%) of such corporation's outstanding stock shall not be
          considered competition.

     f)   "Early  Retirement" means retirement of a Participant,  who remains in
          the  employ  of the  Company  until  his  retirement  on or after  age
          fifty-five (55) but prior to age sixty-five (65).  Notwithstanding the
          prior sentence,  the Participant  must complete five (5) years of full
          time service with the Company before such retirement.

     g)   "Fair Market  Value" of a share of Common  Stock of the Company  shall
          mean, with respect to the date in question,  either (x) the average of
          the  highest  and  lowest  officially-quoted  selling  prices  on such
          exchange or (y) the closing  sale price of such stock,  as selected by
          the  Committee;  or if the  Company's  Common  Stock is not  quoted by
          NASDAQ, traded on such an exchange, or otherwise traded publicly,  the
          value determined, in good faith, by the Committee.

     h)   "Normal  Retirement"  means retirement by a Participant who remains in
          the  employ  of the  Company  until age 65 or any time on or after the
          Participant attains age 65.

     i)   "Option" means an option granted under this Plan

     j)   "Participant" means an employee who is eligible to participate in this
          plan under Section 4.

     k)   "Plan" means the Pioneer Hi-Bred International, Inc. Stock Option Plan
          as amended from time to time.

     l)   "Shares"  means the Common  Stock,  $1 par value,  of Pioneer  Hi-Bred
          International, Inc.

     m)   "Termination  for  Cause"  means  termination  as  determined  by  the
          Committee,  except after a Change in Control,  "Termination for Cause"
          shall mean the  termination of employment of a Participant as a direct
          result of an act or acts of  dishonesty,  constituting  a felony under
          the laws of the United  States or the State of Iowa and  resulting  or
          intended  to  result  directly  or  indirectly  in  gain  or  personal
          enrichment at the expense of the Company. An act or acts of dishonesty
          constituting  a felony will be deemed to occur only if the act or acts
          constituting  the felony are  established  either by (a) the  specific
          admission of the Participant or (b) a final nonappealable  judgment of
          a court of competent jurisdiction.

3.   Administration.

     a)   Administration.  The Plan shall be administered by the Committee.  The
          Committee  shall have  authority to make all  determinations  required
          under the Plan, to interpret  the Plan,  to decide  questions of facts
          arising under the Plan, to formulate  rules and  regulations  covering
          the  operation  of the  Plan  and to  make  all  other  determinations
          necessary  or  desirable  in  the  administration  of  the  Plan.  The
          decisions of the  Committee on any  questions  concerning or involving
          the  interpretation  or  administration of the Plan shall be final and
          conclusive.

     b)   Delegation  of Authority.  The  Committee may delegate,  to the extent
          allowed by law, to any  officer of the  Company  its duties  under the
          Plan pursuant to such  conditions or  limitations as the Committee may
          establish,  except  that  only the  Committee  may  select,  and grant
          Options  to,  Participants  who  are  subject  to  Section  16 of  the
          Securities Exchange Act of 1934.

4.   Participation.

     Participation in the Plan shall be limited to executive  officers and those
     other key  employees  of the Company and its  subsidiaries  selected by the
     Committee.

     Directors who are officers of the Company shall be eligible to  participate
     in the Plan. No director who is not an officer of the Company and no member
     of the Committee shall be eligible to participate in the Plan.


5.   Grants.

        The  Committee may from time to time grant to  Participants  Options for
        such  number of  Shares as the  Committee  shall  determine  in its sole
        discretion (such individuals to whom grants are made being herein called
        "Optionees").  The Options granted shall take such form as the Committee
        shall determine, subject to the following terms and conditions.

     a)   Price.  The price  per share  deliverable  upon the  exercise  of each
          Option  ("exercise  price")  shall  not be less  than 100% of the Fair
          Market Value of the Shares on the date the option is granted.

     b)   Exercise. Options may be exercised in whole or in part upon payment of
          the exercise price of the Shares to be acquired. Payment shall be made
          in cash or, in the discretion of the Committee,  in shares  previously
          acquired by the  Participant  and held by the Participant for at least
          six months or a  combination  of cash and such shares of Common Stock.
          The Fair Market Value of shares of Common  Stock  tendered on exercise
          of Options shall be determined on the date of exercise.

     c)   Exercise  Through a Broker.  Options may be  exercised  in whole or in
          part upon delivery (including by fax) to the Company of an irrevocable
          written  notice  of  exercise  with  irrevocable   instructions  to  a
          broker-dealer  to  sell  (or  margin)  some or all of the  Shares  and
          deliver sale (or margin loan) proceeds  directly to the Company to pay
          the  exercise  price and  withholding  taxes.  The date on which  such
          notice is received by the Company shall be the date of exercise of the
          option,  provided  that within three  business days of the delivery of
          such notice the funds to pay for exercise of the option are  delivered
          to the Company by a broker acting on behalf of the Optionee  either in
          connection  with the sale of the  shares  underlying  the option or in
          connection  with the making of a margin loan to the Optionee to enable
          payment of the exercise  price of the option.  In connection  with the
          foregoing,  the  Company  will  provide  a  copy  of  the  notice  and
          instructions  to the  aforesaid  broker upon receipt by the Company of
          such notice and will  deliver to such broker,  within  three  business
          days of the delivery of such notice to the Company,  a certificate  or
          certificates  (as requested by the broker)  representing the number of
          shares  underlying  the option  that have been sold by such broker for
          the Optionee.

     d)   Terms of Options.  The term during  which each option may be exercised
          shall be determined by the Committee,  but in no event shall an option
          be  exercisable  in  whole or in part in less  than  one  year  unless
          accelerated  as set forth  herein or,  more than ten years and one day
          from the date it is granted.

          All rights to  purchase  shares  pursuant to an option  shall,  unless
          sooner terminated, expire at the date designated by the Committee. The
          Committee  shall  determine the date on which each option shall become
          exercisable and may provide that an option shall become exercisable in
          installments.   The  shares   constituting  each  installment  may  be
          purchased  in  whole  or in part at any time  after  such  installment
          becomes  exercisable,  subject to such minimum exercise requirement as
          is designated by the Committee.  The Committee may accelerate the time
          at which any option may be exercised in whole or in part. The Optionee
          shall not be entitled to any voting rights on any stock represented by
          outstanding Options.

     e)   Termination of Employment; Change in Control. If an Optionee ceases to
          be an employee of the Company due to Normal Retirement, death or total
          and  permanent  disability,  a) each of the  Optionee's  unvested  and
          unexpired  Options  shall  become  fully  vested,  and b)  each of the
          Optionee's  exercisable  Options  (including  those Options  vested in
          clause a of this  paragraph)  shall only remain  exercisable  for, and
          shall  otherwise  terminate at the end of, a period of one year or for
          such other period as the Committee  determines in its sole  discretion
          from the date of termination of employment. Notwithstanding the above,
          an  Option  shall  not  be  exercisable   after  its  expiration  date
          established  pursuant to section  5d.

          If an  Optionee  ceases  to be an  employee  of the  Company  upon the
          occurrence  of his or her Early  Retirement,  a) the  Committee in its
          sole  discretion may vest all or a portion of the Optionee's  options,
          b) each of the  Optionee's  exercisable  Options vested in clause a of
          this paragraph shall only remain  exercisable for, and shall otherwise
          terminate at the end of, a period  determined  by the Committee in its
          sole  discretion,  and b) each of the Optionee's  exercisable  Options
          (excluding  those Options vested in clause a of this paragraph)  shall
          only remain exercisable for, and shall otherwise  terminate at the end
          of a period  of one year or for such  other  period  as the  Committee
          determines in its sole discretion after the date of Early  Retirement.
          Notwithstanding  the above,  an Option shall not be exercisable  after
          its expiration date established pursuant to section 5d.

          If an  Optionee  ceases  to be an  employee  of  the  Company  due  to
          Termination for Cause (including  after a Change in Control),  each of
          the Optionee's  Options  (including both vested and unvested  options)
          shall be forfeited.

          If an  Optionee  ceases to be a full time  employee of the Company for
          any reason other than death, Disability, Normal or Early Retirement or
          Termination for Cause, each of the Optionee's then exercisable Options
          shall only remain  exercisable  for, and shall otherwise  terminate at
          the end of,  a  period  of 90 days or for  such  other  period  as the
          Committee  determines  in  its  sole  discretion  after  the  date  of
          termination of employment.  Notwithstanding the above, an Option shall
          not be exercisable  after its expiration date established  pursuant to
          section 5d. All of Optionee's Options that were not exercisable on the
          date of such termination shall be forfeited.

          Notwithstanding  anything to the  contrary  herein,  if a  participant
          ceases to be a full time  employee of the  Company or any  subsidiary,
          for any reason other than  Termination for Cause, the Committee at its
          sole  discretion a) may accelerate the vesting of any unvested  Option
          so that it will become fully vested and  exercisable as of the date of
          such  participant's  termination  of employment and b) may establish a
          period  for which any  exercisable  Option  (including  those  Options
          vested  in  clause  a of this  paragraph)  shall  remain  exercisable.
          Notwithstanding  the above,  an Option shall not be exercisable  after
          its expiration date established pursuant to section 5d.

          If there is a Change  in  Control  of the  Company,  there  will be an
          automatic  acceleration  of the vesting of any  outstanding  Option so
          that it will become  fully vested and  exercisable  upon the Change in
          Control  and except  only for  Termination  for Cause or  engaging  in
          Competition,  shall  remain  exercisable  until  its  expiration  date
          established pursuant to section 5d.

     f)   Competition.  Notwithstanding  the above,  unless an Optionee receives
          written consent to do so from the Company,  if the Optionee engages in
          Competition each of the Optionee's  Options (including both vested and
          unvested  options)  shall be forfeited.  Such consent must  explicitly
          refer to the Optionee's stock Options to be effective

     g)   Maximum.  The  maximum  number of shares  with  respect to which stock
          options may be granted to any single individual in any period covering
          five consecutive Plan Years shall not exceed 500,000 shares.

6.      Shares Available for the Plan.

     a)   Number.  Subject to  adjustments  as  provided in Section 8, the total
          number of Shares  that may be issued  pursuant  to the Plan  shall not
          exceed  3,000,000.  These Shares may consist,  in whole or in part, of
          authorized  but unissued  shares or shares  reacquired  by the Company
          including,  without  limitation,  Shares purchased in the open market,
          and not reserved for any other purpose.

     b)   Reacquired  Shares.  If, at any time, any Option expires or terminates
          unexercised or fails to vest, such unpurchased Shares shall thereafter
          be available for further grants under the Plan.

7.      Written Agreement.

        Each  employee to whom a grant is made under the Plan shall enter into a
        written  agreement with the Company that shall contain such  provisions,
        consistent with the provisions of the Plan, as may be established by the
        Committee.

8.      Adjustments.

        In the  event of any  change in the  outstanding  shares of stock of the
        Corporation   by   reason   of   a   stock   dividend,    stock   split,
        recapitalization,  merger,  consolidation,  combination,  or exchange of
        shares or other  similar  corporate  change,  the  Committee in its sole
        discretion  shall make such  adjustments as it deems  appropriate in the
        aggregate  number  and kind of shares  issuable  under the Plan,  in the
        number and kind of shares  covered by grants made under the Plan, and in
        the exercise price of outstanding  Options, and such determination shall
        be conclusive.  In the event of any  liquidation,  dissolution,  merger,
        consolidation or other reorganization ("Transaction"), the Options shall
        continue in effect in accordance  with their  respective  terms,  except
        that following a Transaction  each Optionee shall be entitled to receive
        in respect of each Share subject to any outstanding Options, as the case
        may be, upon exercise of any Option,  the same number and kind of stock,
        securities, cash, property, or other consideration that each holder of a
        Share was entitled to receive in the  Transaction in respect of a Share.
        After the Distribution  Date as defined in the Rights Agreement  between
        Pioneer Hi-Bred International Inc. and the First National Bank of Boston
        as  Rights  Agent,  the  Committee  will make  adjustments  to avoid the
        dilutive  impact of the  exercise  of rights or the  exchange  of rights
        pursuant to such agreement.

9.      Withholding of Taxes.

        The Company may  require,  as a condition to any grant under the Plan or
        to the delivery of certificates  for shares issued  hereunder,  that the
        grantee pay to the Company,  in cash, any federal,  state or local taxes
        of any kind  required by law to be withheld  with  respect to any grant,
        vesting,  exercise or any delivery of shares or Options.  The Committee,
        in its sole  discretion,  may  permit  Participants  to pay  such  taxes
        through  a) the  withholding  of shares  otherwise  deliverable  to such
        Participant  in  connection  with the  exercise  of the  Option,  b) the
        delivery to the Company of Shares otherwise acquired by the participant,
        or c) through the brokerage  exercise feature described in Section 5(c).
        The Shares withheld by the Company or Shares tendered to the Company for
        satisfaction of tax withholding  obligations under this section shall be
        valued in the same manner as used in  computing  the  withholding  taxes
        under  applicable law. The Company,  to the extent permitted or required
        by law,  shall  have the right to deduct  from any  payment  of any kind
        (including  salary or bonus) otherwise due to a Participant any federal,
        state or local taxes of any kind  required  by law to be  withheld  with
        respect to any grant,  or vesting of Options  under the Plan or delivery
        of shares,  or to retain or sell without  notice a sufficient  number of
        the  Shares to be issued to such  Participant  to cover any such  taxes,
        provided  that the  Company  shall not sell any such shares if such sale
        would be considered a sale by such  Participant  for purposes of Section
        16 of the Exchange Act.

10.     Listing and Registration.

        If  the  Committee  determines  that  the  listing,   registration,   or
        qualification  upon any  securities  exchange or under any law of shares
        subject to any Option is necessary or desirable as a condition of, or in
        connection with, the granting of same or the issue or purchase of shares
        thereunder,  no such Option may be  exercised in whole or in part unless
        such  listing,  registration  or  qualification  is effected free of any
        conditions not acceptable to the Committee.

11.     Transfer of Employee and Leaves of Absence.

        Transfer  of an  employee  from  the  Company  to a  Subsidiary,  from a
        Subsidiary to the Company,  and from one Subsidiary to another shall not
        be considered a termination of employment.  Nor shall it be considered a
        termination  of  employment if an employee is placed on military or sick
        leave or such other leave of absence  which is  considered as continuing
        intact  the  employment  relationship;  in such a case,  the  employment
        relationship  shall be continued until the date when an employee's right
        to  reemployment  shall no  longer  be  guaranteed  either  by law or by
        contract.

12.     Duration of the Plan.

        The date of  commencement  of the Plan shall be September  1, 1995.  The
        Plan shall continue until  terminated by the Board.  Any Options granted
        prior to shareholder  approval may not be exercised  until,  and will be
        void unless,  shareholder approval is obtained as required by applicable
        laws.

13.     Amendment and Termination of the Plan.

     a)   Amendment.  This Plan may be amended by the Board, without shareholder
          approval except as otherwise required by the law.

     b)   Termination.  The Company  reserves the right to terminate the Plan at
          any time by action of the Board.


     c)   Existing Options. Neither amendment nor termination of this Plan shall
          affect  any  outstanding  Options.  However,  with the  consent of the
          grantee affected thereby,  the Committee may amend or modify the grant
          of any  outstanding  Option  in any  manner  to the  extent  that  the
          Committee  would  have  had the  authority  to make  such  grant as so
          modified or amended,  including without  limitation to change the date
          or dates as of which an option becomes exercisable without limitation.

14.     Provisions Applicable Solely to Insiders.

        Persons  subject to Section 16 of the  Securities  and  Exchange  Act of
        1934,  as  amended  ("Section  16") with  respect to  securities  of the
        Company, may have to comply with additional rules imposed by the Company
        to ensure compliance with Section 16.

15.     Miscellaneous

     a)   No Contract of Employment.  Nothing in this Plan shall be construed as
          a contract of  employment  between  the  Company and any  Participant.
          Nothing in this Plan  shall be deemed to  constitute  a  contract  for
          services between the Company and a Participant,  and nothing contained
          in the  Plan  shall  be  deemed  to give a  Participant  any  right to
          continue  furnishing  services to the Company or the Company any right
          to demand such services. Nothing in this Plan shall be construed as an
          elimination  of the right of the Company to  discharge a  Participant,
          with or without cause.

     b)   Severability.  If any  provision  of this Plan is held to be  illegal,
          invalid,   or   unenforceable,    such   illegality,   invalidity   or
          unenforceability  shall not affect the  remaining  provisions  of this
          Plan,  and such  provision  shall be construed and enforced as if such
          illegal, invalid, or unenforceable provision had never been inserted.


     c)   Governing Law. This Plan shall be governed by the laws of the State of
          Iowa without reference to the principles of conflict of laws therein.

                       PIONEER HI-BRED INTERNATIONAL, INC.



                      By:_________________________________
                               Charles S. Johnson
                               President and CEO


- -----------------------------
Jerry L. Chicoine
Secretary