| 水稻矮秆基因对GA_3敏感性的酶学基础 |
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| 引用本文： | 宋平,曹显祖,吴永宏,朱晓红.水稻矮秆基因对GA_3敏感性的酶学基础[J].扬州大学学报(农业与生命科学版),1994(4). |
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| 作者姓名： | 宋平 曹显祖 吴永宏 朱晓红 |
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| 作者单位： | 江苏农学院农学系 |
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| 基金项目： | 农业部“八五”应用基础研究项目 |
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| 摘 要： | 以高秆水稻品种百叶籼（对照）、含不同矮秆基因的水稻品种广场矮、新桂矮、双矮为材料，研究其对ＧＡ＿３不同敏感性的酶学基础。结果表明，携有ｓｄ－１ｓｄ－１矮秆基因的水稻幼苗对ＧＡ＿３的敏感性强于携有ｓｄ－ｇｓｄ－ｇ矮秆基因的品种；供试品种对２０ｍｇ／ｋｇＧＡ＿３的反应，表现在体内过氧化物酶活性下降，且下降幅度与各品种对ＧＡ＿３不同敏感性基本一致。同工酶谱分析结果表明，酶活性下降与Ａ＿９，Ａ＿（１１）谱带有关，Ａ＿５谱带与不同矮秆基因对ＧＡ＿３的敏感性有关；体内吲哚乙酸氧化酶活性下降，下降幅度与不同矮秆基因材料对ＧＡ＿３敏感性一致。
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| 关 键 词： | 水稻 矮化品种＋基因 赤霉酸＋敏感度（生理） 过氧化物酶 吲哚乙酸＋氧化酶 |
ENZYMOLOGY-EASES FOR DIFFERENT SENSITIVITY TOGA_3 OF SEMIDWARF GENES IN RICE |
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| Song Ping,Cao Xianzu,Wu Yonghong,Zhu Xiaohong.ENZYMOLOGY-EASES FOR DIFFERENT SENSITIVITY TOGA_3 OF SEMIDWARF GENES IN RICE[J].Journal of Yangzhou University:Agricultural and Life Science Edition,1994(4). |
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| Authors: | Song Ping Cao Xianzu Wu Yonghong Zhu Xiaohong |
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| Institution: | Dept.of Agron. Jiangsu Agric.Coll.Yangzhou 225009 |
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| Abstract: | The biochemical mechanisms of different sensitivities to GA_3 of semidwarf genes in rice werestudied with high-stem rice variety-Baiyexian(Control)and semidwarf rice varieties which have differentsemidwarf genes.The results indicated that the seedlings with gene sd-1 sd-1 were more sensitive to GA_3than those with gene sd-g sd-g. The activities of peroxidase and indoleacetic acld oxidase in the seedlingsdecreased when treated with GA_3,and there was any close correlation found between the decrease percentageof the enzyme actlvity and the sensitivity to GA_3 among various semidwarf genes. Assay of isoperoxidase pat-terns showed that the decrease of peroxidase activity was correlated with the bands of A_9 A_(11),and the changesof isoperoxidase patterns of varieties with various semidwarf gene were different.The isozyme band A_5 wasrelated to the sensitivity to GA_3 of different semidwarf genes. |
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| Keywords: | rice dwarfted varieties genes gibberellic acid sensitivity(physiology) peroxidase in-doleacetic acid oxidases |
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