An increase in citrus fruit (Kiyomi tangor) abscission induced by ABA is accompanied by an IAA increase in the abscission zone and ethylene production

IF 1.7 4区农林科学 Q2 HORTICULTURE

Journal of Horticultural Science & Biotechnology Pub Date : 1999-01-01 DOI:10.1080/14620316.1999.11511130

H. Okuda

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引用次数: 5

Abstract

SummaryChange in IAA concentrations in the peduncle, branch and intervening abscission zone were measured to clarify the involvement of IAA in citrus fruit drop in response to ABA application. Results indicating the importance of an IAA increase in the abscission zone were obtained. One day after application of ABA, the concentration of IAA in the abscission zone showed a temporary increase and then a decrease. The concentration of IAA in the abscission zone was dependent on the concentration of ABA applied. Changes in the production of ethylene, which is involved in the process of abscission and which is induced by IAA, in explants from treated leafy inflorescences, were examined. The fruit-abscission ratios were also investigated in relation to the time required for preparation. Explants sampled 0±1.d after application showed little abscission or ethylene production during the first 24 h incubation. During the next 24 h, almost all the ABA-applied explants abscinded, as did the control, but the former p...

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ABA诱导柑桔果实脱落增加的同时，IAA也增加了脱落区和乙烯产量

摘要本研究通过测定柑桔果柄、枝和中间脱落区IAA浓度的变化，阐明了IAA在柑桔果实脱落过程中对ABA的响应。结果表明，IAA在脱落区增加的重要性。施用ABA 1 d后，脱落区IAA浓度先升高后降低。脱落区IAA浓度与外源ABA浓度有关。研究了IAA诱导的叶片脱落过程中乙烯产生的变化。还研究了果实脱落率与制备所需时间的关系。外植体取样0±1。施后D在前24 h孵育期间几乎没有脱落或乙烯产生。在接下来的24 h内，几乎所有施用aba的外植体都脱落了，与对照组一样，但施用aba的外植体很少脱落。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Horticultural Science & Biotechnology 农林科学-园艺

CiteScore

3.90

自引率

5.30%

发文量

审稿时长

3 months

期刊介绍： The Journal of Horticultural Science and Biotechnology is an international, peer-reviewed journal, which publishes original research contributions into the production, improvement and utilisation of horticultural crops. It aims to provide scientific knowledge of interest to those engaged in scientific research and the practice of horticulture. The scope of the journal includes studies on fruit and other perennial crops, vegetables and ornamentals grown in temperate or tropical regions and their use in commercial, amenity or urban horticulture. Papers, including reviews, that give new insights into plant and crop growth, yield, quality and response to the environment, are welcome, including those arising from technological innovation and developments in crop genome sequencing and other biotechnological advances.