| 云南高原粳稻区白叶枯病菌致病型鉴定及主栽品种抗性反应初析 |
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| 引用本文： | 余腾琼,梁斌,叶昌荣,徐福荣,汤翠凤,毛孝强,戴陆园.云南高原粳稻区白叶枯病菌致病型鉴定及主栽品种抗性反应初析[J].中国农业科学,2005,38(6):1148-1155. |
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| 作者姓名： | 余腾琼 梁斌 叶昌荣 徐福荣 汤翠凤 毛孝强 戴陆园 |
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| 作者单位： | 1. 云南省农业科学院生物技术与种质资源研究所,昆明,650205
2. 云南农业大学农学与生物技术学院,昆明,650201 |
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| 基金项目： | 云南省自然科学基金重点项目(2000C0010Z)，农业部“948”项目全球水稻分子育种，国家“十五”科技攻关项目(2004BA525B02-07) |
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| 摘 要： | 从云南高原粳稻区采集分离36份白叶枯病菌株，在包括初步选定的7个高原粳稻白叶枯病菌鉴别品种（毫糯扬、TN1、黄玉、珍珠矮、IR26、南粳33、金南风）在内的29个水稻品种上测定致病型，进一步明确了这7个鉴别品种的有效性。发现菌株与品种之间具有交叉互作反应，菌株与品种之间存在质的特异性互作关系;利用这套鉴别品种可将36个菌株划分为9个致病型，其中Ⅴ型菌为优势菌群，Ⅶ型菌为毒性菌群。云南高原粳稻区的主栽品种多数感病。稻种资源IRBB21（Xa-21）、扎昌龙（Xa-22t，Xa-24t）、IR1545-339(xa-5)对所有参试菌株均表现抗病，在云南高原粳稻育种中具有较好的利用价值。
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| 关 键 词： | 云南 抗性 致病型 白叶枯病菌 高原粳稻 |
| 收稿时间： | 2004-8-5 |
A Preliminary Analysis of Pathotypes of Xanthomonas oryzae pv. oryzae and the Resistant Reactions of Main Japonica Rices in the Yunnan Plateau |
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| YU Teng-qiong,LIANG Bin,YE Chang-rong,XU Fu-rong,TANG Cui-feng,MAO Xiao-qiang,DAI Lu-yuan.A Preliminary Analysis of Pathotypes of Xanthomonas oryzae pv. oryzae and the Resistant Reactions of Main Japonica Rices in the Yunnan Plateau[J].Scientia Agricultura Sinica,2005,38(6):1148-1155. |
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| Authors: | YU Teng-qiong LIANG Bin YE Chang-rong XU Fu-rong TANG Cui-feng MAO Xiao-qiang DAI Lu-yuan |
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| Institution: | YU Teng-qiong1,LIANG Bin1,YE Chang-rong1,XU Fu-rong1,TANG Cui-feng1,MAO Xiao-qiang2,DAI Lu-yuan1 |
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| Abstract: | The pathogenicity of 36 isolates of Xanthomonas oryzae pv. oryzae (Xoo), which were collected from japonica rices in the Yunnan Plateau, was evaluated on 29 rice varieties including a set of 7 varieties to identify pathogenicity, ie. Haonuoyang, TN1, Kogyoku , Zhengzhuai, IR26, Nanjing 33 and Kinmaze, which may be considered as a set of differential varieties for Xoo races from Yunnan japonica rice. The efficiency of the 7 varieties was further confirmed. The results showed reversible and specific reactions between isolates and varieties. The isolates were classified into 9 pathotypes from pathotype I to Ⅸ according to their pathogenic reactions on the 7 rice varieties. The pathotype Ⅴ was the epidemic while pathogen Ⅶ was the most pathogenic. Most japonica varieties being grown in the Yunnan plateau were susceptible to Xoo. The rice lines IRBB21 (Xa-21), Zhachanglong (Xa-22t，Xa-24t)and IR1545-339 (xa-5), which were resistant to all the isolates tested, can be used as donors of resistant genes for bacterial blight in japonica rice breeding in the Yunnan Plateau. |
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| Keywords: | Japonica rice Xanthomonas oryzae pv oryzae Pathotype Resistance Yunnan |
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