兰州百合鳞茎发育及低温解除休眠过程中内源激素的变化

doi:10.7525/j.issn.1673-5102.2006.05.013

植物研究 ›› 2006, Vol. 26 ›› Issue (5): 570-576.doi: 10.7525/j.issn.1673-5102.2006.05.013

兰州百合鳞茎发育及低温解除休眠过程中内源激素的变化

孙红梅;李天来^*;李云飞

(沈阳农业大学园艺学院，辽宁省设施园艺重点实验室，沈阳 110161)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-09-20 发布日期:2006-09-20
通讯作者: 李天来
基金资助:

Changes of endogenous hormones in Lilium davidii var. unicolor bulbs during bulb development and storage at low temperature for dormancy release

SUN Hong-Mei;LI Tian-Lai*;LI Yun-Fei

(College of Horticulture,Shenyang Agricultural University,Key Laboratory of Protected Cultivation,Liaoning Province Shenyang 110161)

Received:1900-01-01 Revised:1900-01-01 Online:2006-09-20 Published:2006-09-20
Contact: LI Tian-Lai
Supported by:

摘要/Abstract

摘要： 以兰州百合为试材，研究了鳞茎发育过程中以及2、6、10℃条件下保湿贮藏101 d内母鳞茎与新鳞茎中内源激素的变化。结果表明：鳞茎发育过程中内源ABA含量以及母鳞茎的GA₃与ZR含量增加，而内源IAA含量以及新鳞茎的GA₃与ZR含量下降。低温贮藏期间，母鳞茎与新鳞茎的GA₃、IAA含量均有升高过程，而ABA含量呈下降趋势；新鳞茎的ZR含量呈下降趋势，母鳞茎的ZR含量也有升高过程。低温处理初期的34 d内，内源激素变化最为显著。不同贮藏温度相比较，ABA含量差异不大，GA₃含量随温度升高而下降。在富含淀粉的新鳞茎中，GA₃和ABA表现出极显著的负相关关系，而在淀粉含量较低的母鳞茎中GA₃和ABA无相关性。通径分析结果表明，母鳞茎与新鳞茎的物质代谢机制不同，母鳞茎的物质变化受内源GA₃的调控，新鳞茎主要是ABA作用的结果。

关键词: 百合, 鳞茎, 发育, 休眠, 内源激素

Abstract: Changes of endogenous hormones in mother scales and in daughter scales of bulbs in Lilium davidii var. unicolor were studied during bulb development and 101 days storage at 2, 6 and 10℃ in moist sawdust. The results indicated that ABA concentration both in mother and daughter scales and GA₃ concentration, ZR concentration in mother scales increased during bulb development, but IAA concentration in all scales and GA₃ concentration, ZR concentration in daughter scales declined. During the low temperature storage, GA₃ and IAA level in different parts of bulb had the increase phase, but ABA content decreased, and ZR content in daughter scales declined, but which in mother scales had the increase as well as. The notable changes in content of endogenous hormones occurred in the earlier 34 d of storage. Compared among different storage temperature, ABA content had little difference, but GA₃ content decreased with the rising of temperature. In daughter scales which having plentiful starch, a significantly negative correlation was observed between GA₃ and ABA content, but had no any correlations in mother scales which had little starch. Path analysis of results showed that metabolism mechanism in mother scales and in daughter scales were different markedly during bulb development and storage at low temperature for dormancy release. Substances changes in mother scales were regulated by endogenous GA₃, but mostly by endogenous ABA in daughter scales.

Key words: Lilium davidii var. unicolor, bulb, development, dormancy, endogenous hormones

中图分类号:

孙红梅;李天来*;李云飞. 兰州百合鳞茎发育及低温解除休眠过程中内源激素的变化[J]. 植物研究, 2006, 26(5): 570-576.

SUN Hong-Mei;LI Tian-Lai*;LI Yun-Fei. Changes of endogenous hormones in Lilium davidii var. unicolor bulbs during bulb development and storage at low temperature for dormancy release[J]. Bulletin of Botanical Research, 2006, 26(5): 570-576.

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兰州百合鳞茎发育及低温解除休眠过程中内源激素的变化

Changes of endogenous hormones in Lilium davidii var. unicolor bulbs during bulb development and storage at low temperature for dormancy release

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