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多效唑调节水稻植株生长的作用机理
引用本文:张远海,汤日圣,高宁,张金渝,吴光南.多效唑调节水稻植株生长的作用机理[J].植物生理与分子生物学学报,1988(4).
作者姓名:张远海  汤日圣  高宁  张金渝  吴光南
作者单位:江苏省农业科学院农业生物遗传生理研究所,江苏省农业科学院农业生物遗传生理研究所,江苏省农业科学院农业生物遗传生理研究所,江苏省农业科学院农业生物遗传生理研究所,江苏省农业科学院农业生物遗传生理研究所 南京 210014,南京 210014,南京 210014,南京 210014,南京 210014
基金项目:国家自然科学基金和农业部资助
摘    要:多效唑处理水稻植株后使株高降低和分蘖增加,植株体内的GA类物质和IAA含量相应下降,乙烯释放率显著增加;用外源GA_3和氮肥能逆转多效唑的抑制作用而使株高增加,同时GA类物质含量也明显增加。因此,多效唑不仅调节体内的GA类物质含量,还能通过调节IAA含量和乙烯释放率而影响植物生长。

关 键 词:多效唑  赤霉素  吲哚乙酸  乙烯  水稻

Mechanism of the Action of Multiple-Effect Triazole on Rice Growth
ZHANG Yuan-Hai,TANG Ri-Sheng,GAO Ning,ZHANG Jin-Yu,WU Guang-Nan Institute of Agrobiological Cenetics and Physiology,Jiangsu Academy of Agricultural Sciences,Nanjing.Mechanism of the Action of Multiple-Effect Triazole on Rice Growth[J].Journal Of Plant Physiology and Molecular Biology,1988(4).
Authors:ZHANG Yuan-Hai  TANG Ri-Sheng  GAO Ning  ZHANG Jin-Yu  WU Guang-Nan Institute of Agrobiological Cenetics and Physiology  Jiangsu Academy of Agricultural Sciences  Nanjing
Institution:ZHANG Yuan-Hai,TANG Ri-Sheng,GAO Ning,ZHANG Jin-Yu,WU Guang-Nan Institute of Agrobiological Cenetics and Physiology,Jiangsu Academy of Agricultural Sciences,Nanjing 210014
Abstract:The levels of plant endogenous hormones (GA, IAA and Ethylene)in MET-treated and untreated rice plants were measured. Sam- ples were collected from cv. Shanyou No. 63 (Oryza sativa L. subsp. hsien Ting) grown in pots. Dynamic changes of endogenous gib- berellin-like substance levels in MET-treated and untreated rice seedlings were shown in Fig. 2. Average content of GA-like substance in MET-treated rice seedlings was reduced to only 8.4% of that of control, Application of exogenous GA_3 or nitrogen fertilizer could re- verse the growth retarding effect of MET(Fig. 3), and, at the same time, increase the GA- like substance content. Levels of endogenous IAA in rice seedlings and stems were also redu- ced dramatically by MET to only 47.5% of that of control (Table 2), but application of exogenous IAA and NAA could not reverse the morphological effects of MET (Table 1). Rate of ethylene evolution in MET-treated rice seedlings was higher than that in control by 37.3%. Moreover, the level of an unknown inhibitor separated with TLC from MET-tre- ated rice seedlings was also higher than that from the control (Fig. 5). Therefore, it is suggested that the action of MET on morphological changes of rice was not only through thc regulation of the level of endogenous GA-like substances, but also endogenous levels of IAA, and an unknown inhibitor and ethylene evolution rate etc. In other words, action of MET on morphology was effected through the action of several endogenous plant hormones as diagrammed in the last paragraph of the paper.
Keywords:MET  GA  IAA  ethylene  rice
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