Effects of Uniconazole-P on Abscission and Endogenous ABA, IAA, and GA-like Substances Levels of Satsuma Mandarin Fruitlet

  • Biosci Biotechnol Biochem. 1996 Jan;60(5):901-2. doi: 10.1271/bbb.60.901.
K Kojima  1 ,  A Goto  1 ,  S Nakashima  1  2
Affiliations
  • 1. a Kuchinotsu Branch, Fruit Tree Research Stution, Kuchinotsu , Nagasaki 859-25 , Japan.
  • 2. b Saga Prefectural Fruit Tree Exp. Stn, Ogi-machi , Saga 845 , Japan.
PMID: 27281152 DOI: 10.1271/bbb.60.901
Abstract

Uniconazole-P, a gibberellin (GA) biosynthesis inhibitor, did not affect growth of mandarin fruitlets definitely but stimulated abscission markedly. Endogenous Abscisic acid concentration in fruitlets treated with uniconazole-P was about 4-fold higher compared with the control. Endogenous indole-3-acetic acid and total GAs levels also changed. The relationships between these changes in endogenous hormone levels and fruit abscission were discussed.

Keywords
abscisic acid; citrus; fruit-drop; gibberellin; indole-3-acetic acid.
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