Identification of the trans isomers of abscisic acid and of abscisyl-β-D-glucopyranoside in latent buds of the grapevine and their evolution during the post-dormancy phase

Authors

  • M. Broquedis
  • J. Bouard

DOI:

https://doi.org/10.5073/vitis.1993.32.223-228

Keywords:

abscisic acid, abscisyl-β-D-Glucopyranoside, bud, dormancy, Vitis vinifera

Abstract

The trans isomers(t-ABA and t-ABA-GE) of abscisic acid (ABA) and of abscisyl-β-D-glucopyranoside (ABA-GE) have been identified in the latent buds of Vitis vinifera L.. cv. Merlot, during the post-dormancy phase. During this phase, the amounts of the four forms of ABA in the buds became minimal. The quantities of ABA-GE and of t-ABA-GE, normally present in much greater quantities than free ABA, decreased strongly. This diminution appeared to be directly linked to the increase of water content of the buds. Although potential bud burst can be related to these phenomena, the role of the trans isomers remains obscure.

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Published

2015-09-02

Issue

Vol. 32 No. 4 (1993): Vitis

Section

Article

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