| 稻瘟病菌生理小种及其毒性 |
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| 引用本文： | 范静华,周惠萍,王洪海,陈建斌,陈海如.稻瘟病菌生理小种及其毒性[J].植物保护,2005,31(6):29-31. |
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| 作者姓名： | 范静华 周惠萍 王洪海 陈建斌 陈海如 |
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| 作者单位： | 云南农业大学,云南省植物病理重点实验室,云南,昆明,650201 |
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| 基金项目： | 国家自然科学基金，云南省科技计划 |
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| 摘 要： | 用我国一套稻瘟病菌生理小种鉴别品种对分离自云南省红河州个旧、石屏、建水不同种植模式的68个稻瘟病菌单孢菌株进行生理小种测定,同时以日本8个单基因鉴别品种对供试菌株进行基因分析。测定结果为B9、B13、B15、B27、B29、B31、C9、C11、C15、D1、E3和G112个生理小种,其中粳型小种占60.29%,籼型小种占39.71%。此结果与以往云南省稻瘟病菌生理小种的变化趋势相吻合。供试的68个菌株进行毒性基因分析表明Av-Ks+和Av-i+频率毒性基因较高。
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| 关 键 词： | 植物病理学 稻瘟病菌 生理小种 毒性基因频率 |
| 收稿时间： | 2005-03-15 |
| 修稿时间： | 2005-03-15 |
Studies on physiological races and virulence of Magnaporthe grisea in Yunnan Province |
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| FAN Jing-hua;ZHOU Hui-ping;WANG Hong-hai;CHEN Jian-bin;CHEN Hai-ru.Studies on physiological races and virulence of Magnaporthe grisea in Yunnan Province[J].Plant Protection,2005,31(6):29-31. |
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| Authors: | FAN Jing-hua;ZHOU Hui-ping;WANG Hong-hai;CHEN Jian-bin;CHEN Hai-ru |
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| Institution: | Key Laboratory of Plant Pathology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China |
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| Abstract: | A total of 68 single-spore isolates of Magnaporthe grisea,collected from the rice mixture or monoculture in Gejiu,Shiping,and Jianshui County of Yunnan Province,were inoculated and analyzed based on 7 Chinese identification varieties.The results showed that the 68 single-spore isolates could be classified into 12 physiological races.The frequency of Japonica race and Indica race were 60.29% and 39.71%,respectively.The frequency of Japonica race increased.The development tendency of the races was similar to that in the past in Yunnan Province.Meanwhile,the frequency of the virulence genes of the 68 single-spore isolates was tested using 8 Japanese single-gene identification varieties.The frequency of the virulence gene AV-K~s+ and AV-i+ were the highest,which were 82.81%and 79.69%,respectively.The results may provide scientific basis for resistance breeding and variety disposition. |
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| Keywords: | phytopathology Magnaporthe grisea physiological race frequency of virulence genes |
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