Planta

, Volume 160, Issue 2, pp 159–163 | Cite as

Ethylene-promoted tomato flower abscission and the possible involvement of an inhibitor

  • Jeremy A. Roberts
  • C. Barbara Schindler
  • Gregory A. Tucker
Article

Abstract

The abscission zone in tomato (Lycopersicon esculentum (L.) Mill. flower pedicels is morphologically distinguishable prior to separation and is delineated by an indentation of the epidermis. Exposure of excised pedicels with the flower attached to ethylene results in abscission within 12 h and this can be accelerated by flower removal. Abscission of excised pedicels with the flower removed takes place in the absence of exogenous ethylene but this is delayed by pretreatment with aminoethoxyvinyl glycine, an inhibitor of ethylene biosynthesis. The data presented support the hypothesis that flower tissue is the source of an abscission inhibitor.

Key words

Abscission (flower, ethylene) Ethylene (flower abscission) Lycopersicon (flower abscission) 

Abbreviations

AVG

aminoethoxyvinyl glycine

IAA

indole-3-acetic acid

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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Jeremy A. Roberts
    • 1
  • C. Barbara Schindler
    • 1
  • Gregory A. Tucker
    • 1
  1. 1.Department of Physiology and Environmental ScienceUniversity of Nottingham School of AgricultureLoughboroughUK

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