| 江西省稻瘟病菌的致病性分化 |
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| 引用本文： | 李湘民,兰波,黄凌洪,何烈干,张天才,黄瑞荣.江西省稻瘟病菌的致病性分化[J].植物保护学报,2009,36(6):497-503. |
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| 作者姓名： | 李湘民 兰波 黄凌洪 何烈干 张天才 黄瑞荣 |
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| 作者单位： | 1. 江西省农业科学院植物保护研究所/江西省农业科学院有害生物控制重点实验室,南昌,330200
2. 江西省植保植检局,南昌,330096 |
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| 基金项目： | 江西省科技支撑重点项目(2007-2009),江西省自然科学基金项目(2007GZN0755),农业部行业科技项目(200803008) 作者简介: 李湘民,男,1963年生,研究员,研究方向为水稻病害, email: xmli1025@yahoo.com.cn; |
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| 摘 要： | 应用30个水稻抗稻瘟病近等基因系或单基因系及7个中国鉴别寄主,于水稻苗期接种,测定2006-2008年从江西省水稻产区分离的195个稻瘟病单孢菌株的致病性.结果表明,江西省稻瘟病菌以广谱致病性的菌株为主,将致病率按PF<30%、30%≤PF<50%、50%≤PF<70%和PF≥70%4区段划分,各区段菌株所占的比例分别为0、8.72%、31.28%和60.00%;病菌群体对所测定的30个抗瘟基因均表现出毒性,毒力频率为17.95%～100%,表现出较低毒力频率的水稻抗瘟基因是pi-z~t、PI-1(1)、PI-z~5和Pi-k,其毒力频率分别为17.95%、26.67%、27.46%和29.23%.此外,江西省稻瘟病菌含6群40个生理小种,在稻瘟病流行的2006年,主要的优势小种为ZB_(13)和ZA_1;在稻瘟病发生较轻的2007年和2008年,优势小种均为ZB_(15)和ZB_(13).进一步分析表明,同一优势小种内的不同菌株存在明显的致病性分化,28个ZB_(13)菌株对30个抗瘟基因的致病率为50.00%～96.67%,26个ZB_(15)菌株的致病率为46.67%-86.67%.对ZB_(13)与ZB_(15)菌株的聚类分析发现,毒力频率相近的菌株致病相似性差异很大.
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| 关 键 词： | 稻瘟病菌 抗瘟基因 致病率 毒力频率 |
| 收稿时间： | 2009/5/25 0:00:00 |
Pathogenicity differentiation of Magnaporthe grisea |
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| Li Xiangmin,Lan Bo,Huang Linghong,He Liegan,Zhang Tiancai and Huang Ruirong.Pathogenicity differentiation of Magnaporthe grisea[J].Acta Phytophylacica Sinica,2009,36(6):497-503. |
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| Authors: | Li Xiangmin Lan Bo Huang Linghong He Liegan Zhang Tiancai and Huang Ruirong |
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| Institution: | Institute of Plant Protection, Jiangxi Academy of Agricultral Sciences, Key Laboratory of Pest Control, Jiangxi Academy of Agricultral Sciences, Nanchang 330200, Jiangxi Province, China; Jiangxi Station of Plant Protection and Quarantine, Nanchang 330096, Jiangxi Province, China;Institute of Plant Protection, Jiangxi Academy of Agricultral Sciences, Key Laboratory of Pest Control, Jiangxi Academy of Agricultral Sciences, Nanchang 330200, Jiangxi Province, China; Jiangxi Station of Plant Protection and Quarantine, Nanchang 330096, Jiangxi Province, China;Institute of Plant Protection, Jiangxi Academy of Agricultral Sciences, Key Laboratory of Pest Control, Jiangxi Academy of Agricultral Sciences, Nanchang 330200, Jiangxi Province, China; Jiangxi Station of Plant Protection and Quarantine, Nanchang 330096, Jiangxi Province, China;Institute of Plant Protection, Jiangxi Academy of Agricultral Sciences, Key Laboratory of Pest Control, Jiangxi Academy of Agricultral Sciences, Nanchang 330200, Jiangxi Province, China; Jiangxi Station of Plant Protection and Quarantine, Nanchang 330096, Jiangxi Province, China;Institute of Plant Protection, Jiangxi Academy of Agricultral Sciences, Key Laboratory of Pest Control, Jiangxi Academy of Agricultral Sciences, Nanchang 330200, Jiangxi Province, China; Jiangxi Station of Plant Protection and Quarantine, Nanchang 330096, Jiangxi Province, China;Institute of Plant Protection, Jiangxi Academy of Agricultral Sciences, Key Laboratory of Pest Control, Jiangxi Academy of Agricultral Sciences, Nanchang 330200, Jiangxi Province, China; Jiangxi Station of Plant Protection and Quarantine, Nanchang 330096, Jiangxi Province, China |
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| Abstract: | |
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| Keywords: | Magnaporthe grisea resisitance gene pathogenic frequency virulence frequency |
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