Biologia Plantarum

, Volume 16, Issue 1, pp 57–66 | Cite as

The role of endogenous gibberellin-like substances and inhibitors in the growth of pea internodes

  • Mirjana Nešković
  • T. Sjauš


Third internodes or whole stems of 7-days old etiolated pea plants were extracted and the content of gibberellin-like substances and inhibitors has been determined. Extracts were found to contain four or five different gibberellin-like substances, some of which are chromatographically similar to GA3. The content of gibberellins has been high in young internodes and decreased along with the internodes elongation. Brief red light irradiation brings about quantitative changes in gibberellin content, depending also on the length of internodes. The extracts contain acidic and neutral inhibitors which interfere with the response to GA3. The content of the inhibitors does not seem to be affected by the ageing of internodes or by the light treatment.


Gibberellin Light Treatment Ethyl Acetate Fraction Pisatin Barley Endosperm 
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Úloha endogenních látek typu giberelinu a inhibitorů při růstu internodií hreachu


Třetí internodia nebo celé stonky sedmidenních etiolovaných rostlin hrachu byly extrahovány a byl určován obsah látek typu giberelinu a obsah inhibitorů. Extrakty obsahovaly 4 až 5 látek typu giberelinu, některé z nich byly chromatograficky blízké GA3. V mladých internodiích byl zjištěn vysoký obsah giberelinů a tento obsah se s prodlužováním internodií snižoval. Ozáření červeným světlem způsobovalo kvantitativní změny v obsahu giberelinu, tyto změny též závisely na délce internodií. Extrakty obsahovaly též acidické a neutrální inhibitory, které interferují s reakcí na GA3. Obsah inhibitorů nebyl ovlivněn stářím internodií ani působením světla.


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Copyright information

© Institute of Experimental Botany 1974

Authors and Affiliations

  • Mirjana Nešković
    • 1
  • T. Sjauš
    • 2
  1. 1.Faculty of Science and Institute for Biological ResearchInstitute of BotanyBeograd
  2. 2.BeogradYugoslavia

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