| 抗稻瘟病多基因聚合对川恢907田间抗性的影响 |
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| 引用本文： | 王平,向跃武,张志勇,王闵霞,蔡平钟,张志雄.抗稻瘟病多基因聚合对川恢907田间抗性的影响[J].西南农业学报,2012,25(3):898-901. |
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| 作者姓名： | 王平 向跃武 张志勇 王闵霞 蔡平钟 张志雄 |
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| 作者单位： | 四川省农业科学院生物技术核技术研究所,四川成都,610066 |
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| 基金项目： | 四川财政育种工程青年基金，四川省财政基因工程项目 |
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| 摘 要： | 通过杂交、回交以及分子标记辅助选择技术,将稻瘟病广谱抗病基因Pi-1、Pi-2和Pi-33聚合到川恢907中。稻瘟病田间抗性鉴定显示,其稻瘟病叶瘟发病率、病情指数从36.31%和15.57分别下降到10.65%～13.88%以及4.2～5.27;穗颈瘟发病率、病情指数从36.53%和12.77分别下降到7.13%～10.22%以及1.51～5.02,显著提高了川恢907的稻瘟病田间抗性。
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| 关 键 词： | 分子标记辅助选择 稻瘟病 抗病基因 基因聚合 川恢907 |
Effects of Gene Pyramiding on Rice Blast Resistance of Chuanhui 907 |
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| WANG Ping
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XIANG Yue-wu
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ZHANG Zhi-yong
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WANG Min-xia
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CAI Ping-zhong
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ZHANG Zhi-xiong.Effects of Gene Pyramiding on Rice Blast Resistance of Chuanhui 907[J].Southwest China Journal of Agricultural Sciences,2012,25(3):898-901. |
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| Authors: | WANG Ping XIANG Yue-wu ZHANG Zhi-yong WANG Min-xia CAI Ping-zhong ZHANG Zhi-xiong |
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| Institution: | (Institute of Biotechnology and Nuclear Technology,Sichuan Academy of Agricultural Sciences,Sichuan Chengdu 610066,China) |
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| Abstract: | Chuanhui 907,a restorer line with large spike,good grain quality,strong combining ability,was bred by Institute of Biotechnology and Nuclear Technology,Sichuan Academy of Agricultural Sciences.The rice blast resistance genes,Pi-1,Pi-2 and Pi-33,were pyramided in Chuanhui 907 by MAS.And the filed resistance of improved Chuanhui 907 was tested,the results showed that the incidence of leaf blast was reduced from 36.31 % to about 11 %,and disease index was reduced from 15.57 to about 5;the neck blast incidence was reduced from 36.53 % to about 9 %,and disease index was reduced from 12.77 to about 3.The conclusion was drawn that the field resistance of improved Chuanhui 907 was significantly increased. |
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| Keywords: | MAS Rice blast Resistance gene Gene pyramiding Chuanhui 907 |
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