STUDIES ON THE INTERACTIONS BETWEEN THE EMBRYONIC AXIS AND THE COTYLEDONS DURING GERMINATION IN PISUM SATIVUM L.: THE INFLUENCE OF INCUBATION CONDITIONS

Authors

  • J. A. BRYANT,

    Corresponding author
    1. Nottingham University School of Agriculture, Sutton Bonington, Loughborough, LE12 5RD, U.K.
      *Correspondence and present address: Department of Botany, University College, P.O. Box 78, Cardiff, CF1 1XL, U.K.
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  • S. J. HACZYCKI

    1. Nottingham University School of Agriculture, Sutton Bonington, Loughborough, LE12 5RD, U.K.
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*Correspondence and present address: Department of Botany, University College, P.O. Box 78, Cardiff, CF1 1XL, U.K.

Summary

The effects of removal of the embryonic axis on the development of enzyme activities in the cotyledons of peas have been studied. Excised cotyledons incubated aseptically in large culture vessels show greater increases in acid ribonuclease and acid phosphatase activities than do cotyledons of intact seeds. In excised cotyledons incubated aseptically in Petri dishes, neither enzyme exhibits the normal increase in activity observed to intact seedlings. The significance of these results is discussed.

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