外源ABA和GA对小麦籽粒内源激素含量及其灌浆进程的影响

doi:10.3864/j.issn.0578-1752.2011.13.005

中国农业科学 ›› 2011, Vol. 44 ›› Issue (13): 2673-2682 .doi: 10.3864/j.issn.0578-1752.2011.13.005

• 耕作栽培·生理生化·农业信息技术 • 上一篇下一篇

外源ABA和GA对小麦籽粒内源激素含量及其灌浆进程的影响

杨卫兵; 王振林; 尹燕枰; 李文阳; 李勇; 陈晓光; 王平; 陈二影; 郭俊祥; 蔡铁; 倪英丽

山东农业大学农学院/作物生物学国家重点实验室,

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-07-01 发布日期:2011-07-01
通讯作者: 王振林

Effects of Spraying Exogenous ABA or GA on the Endogenous Hormones Concentration and Filling of Wheat Grains

YANG Wei-bing; WANG Zhen-lin; YIN Yan-ping; LI Wen-yang; LI Yong; CHEN Xiao-guang; WANG Ping; CHEN Er-ying; GUO Jun-xiang; CAI Tie; NI Ying-li

山东农业大学农学院/作物生物学国家重点实验室,

Received:1900-01-01 Revised:1900-01-01 Online:2011-07-01 Published:2011-07-01

摘要/Abstract

摘要： 【目的】探讨喷施外源脱落酸（ABA）或赤霉素（GA）对小麦籽粒内源激素含量及其灌浆进程的影响，为激素调控提高籽粒的粒重提供理论依据。【方法】试验选用山农1391和藁城8901两个品种，籽粒灌浆初期喷施ABA或GA 两种外源激素于穗部，定期取籽粒样品，用高效液相色谱法测定籽粒内源激素含量，用三次多项方程式对籽粒灌浆进程进行模拟并分析相关参数。【结果】喷施外源ABA或GA均能显著增加两个品种的粒重。外源ABA或GA对粒重的调控存在粒位效应。喷施ABA显著增加强势粒粒重，喷施GA使强势粒和弱势粒粒重均显著增加。喷施外源ABA显著提高籽粒ABA含量，喷施外源GA显著提高籽粒GA含量，喷施外源ABA或外源GA均显著提高灌浆中后期籽粒IAA和CTK的含量，尤其是喷施外源GA效果更为明显。喷施外源ABA或外源GA均能延长籽粒的灌浆持续期，喷施ABA显著提高灌浆初期强势粒的灌浆速率，而喷施GA显著提高灌浆中后期强势粒和弱势粒的灌浆速率。【结论】喷施外源ABA或外源GA通过改变籽粒内源激素水平，调节灌浆起始时间和籽粒灌浆持续期，进而调控籽粒粒重的形成。喷施ABA是通过提高强势粒粒重来增加粒重的，喷施GA是通过提高强势粒和弱势粒的粒重来增加粒重的。

关键词: 小麦, 脱落酸, 赤霉素, 强势粒, 弱势粒, 胚乳细胞数目, 内源激素, 籽粒灌浆

Abstract: 【Objective】The objective of the experiment is to explore the relationship between exogenous ABA and GA to the levels of endogenous hormones in grains and the grain filling, and provide a theoretical basis for increasing grain weight under the regulation of exogenous hormone.【Method】The field experiments were carried out at Taian Experimental Station of Shandong Agricultural University, two cultivars Shannong 1391 and Gaocheng 8901 were planted in the farm, exogenous ABA or GA to the spikes were sprayed at initial grain filling stage, spikes were sampled after anthesis till maturity, and grains were partitioned into two groups, superior grains (the 1st and 2nd grains from the basal part of middle-spikelets ) and inferior grains (the 3rd and 4th grains from the basal part of middle spikelets or the 3rd grains or the 3rd, 4th and 5th grains).Then, taking the grains for the analysis of endogenous hormone levels and grain filling characteristics.【Result】Spraying exogenous ABA or GA enhanced the grain weight. Spraying exogenous ABA enhanced the weight of superior grains. Spraying exogenous GA enhanced the weight of superior and inferior grain. At the same time, spraying exogenous GA enhanced the levels of endogenous GA in grains. Spraying exogenous ABA enhanced the levels of endogenous ABA in grains. Spraying exogenous ABA or GA enhanced the IAA and CTK content at middle and later periods of grains filling. Grain filling characteristics suggest that spraying exogenous ABA or GA extended the grain filling stage. Spraying exogenous ABA enhanced the initial grain filling rate of superior grains. Spraying exogenous GA enhanced the grain filling rate at middle and later periods of grains filling. 【Conclusion】Spraying exogenous ABA or GA regulated the levels of endogenous hormones in grains, aslo the initial grain filling stage and duration of grains filling stage, and then, grain weight was regulated. Spraying exogenous ABA enhanced the grain weight by enhancing the weight of superior grain. Spraying exogenous GA enhanced the grain weight by enhancing the weight of superior and inferior grain.

Key words: wheat, ABA, GA, superior grain, inferior grain, endosperm cell number, endogenous hormones, grain filling

杨卫兵, 王振林, 尹燕枰, 李文阳, 李勇, 陈晓光, 王平, 陈二影, 郭俊祥, 蔡铁, 倪英丽. 外源ABA和GA对小麦籽粒内源激素含量及其灌浆进程的影响[J]. 中国农业科学, 2011, 44(13): 2673-2682 .

YANG Wei-Bing, WANG Zhen-Lin, YIN Yan-Ping, LI Wen-Yang, LI Yong, CHEN Xiao-Guang, WANG Ping, CHEN 二Ying, GUO Jun-Xiang, CAI Tie, NI Ying-Li. Effects of Spraying Exogenous ABA or GA on the Endogenous Hormones Concentration and Filling of Wheat Grains[J]. Scientia Agricultura Sinica, 2011, 44(13): 2673-2682 .

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外源ABA和GA对小麦籽粒内源激素含量及其灌浆进程的影响

Effects of Spraying Exogenous ABA or GA on the Endogenous Hormones Concentration and Filling of Wheat Grains

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