Ontogenetic variation in levels of gibberellin A1 in Pisum

  title={Ontogenetic variation in levels of gibberellin A1 in Pisum},
  author={J. Ross and J. Reid and H. Dungey},
  • J. Ross, J. Reid, H. Dungey
  • Published 2004
  • Biology, Medicine
  • Planta
  • The levels of the biologically active gibberellin (GA), GA1, and of its precursor, GA20, were monitored at several stages during ontogeny in the apical portions of isogenic tall (Le) and dwarf (le) peas (Pisum sativum L.) using deuterated internal standards and gas chromatography-selected ion monitoring. The levels of both GAs were relatively low on emergence and on impending apical arrest. At these early and late stages of development the internodes were substantially shorter than at… CONTINUE READING
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