Preliminary Evaluation of Pathotypes of Xanthomonas oryzae pv. oryzae in Japonica Rice Region of Yunnan Plateau

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Preliminary Evaluation of Pathotypes of Xanthomonas oryzae pv. oryzae in Japonica Rice Region of Yunnan Plateau

YU Teng-qiong ¹; YE Chang-rong ¹; XU Fu-rong ¹; LIANG Bin ¹; ZHANG Jin-yu ¹; WANG Jian-jun ¹; MAO Xiao-qiang ²; DAI Lu-yuan ^{1; *}

（ ¹Crop Genetic Resources Institute; Yunnan Academy of Agricultural Sciences; Kunming 650205; China; ²College of Agronomy and Biotechnology; Yunnan Agricultural University; Kunming 650201; China）

Received:1900-01-01 Revised:1900-01-01 Online:2003-07-10 Published:2003-07-10

云南高原粳稻区白叶枯病菌的致病型初步鉴定

余腾琼1; 叶昌荣1; 徐福荣1; 梁斌1; 张金渝1; 王建军1; 毛孝强2; 戴陆园1，*

1云南省农业科学院农作物品种资源站, 云南昆明 650205; 2云南农业大学农学与生物技术学院, 云南昆明 650201

Abstract

Abstract: Seventeen isolates of Xanthomonas oryzae pv. oryzae collected from japonica rice grown in the Yunnan plateau region were preliminary classified into 7 pathotypes according to the pathogenic reactions on 30 rice varieties tested. The 7 pathotypes were named as pathotype Ⅰ to pathotype Ⅶ. The pathotype Ⅴ is an epidemic one in the Yunnan plateau rice region now. Seven rice varieties are considered as a set of differential varieties for bacterial blight race in the Yunnan plateau japonica rice, i.e. Kogyoku, Haonuoyang, TN1, Zhenzhu′ai, IR26, Nanjing 33 and Kinmaze . The disease reactions of the 7 pathotypes were determined on the set of differential varieties. The varieties Wase Aikoku 3 (Xa-3), IR1545-339(xa-5), IRBB21(Xa-21), and Zhachanglong (Xa-22^t, Xa-24^t) were resistant to all strains tested, and useful for resistance breeding in Yunnan Province.

Key words: japonica rice, bacterial blight, pathotype, differential variety

摘要： 利用采自云南高原粳稻区病叶分离的17份水稻白叶枯病菌株，在30份水稻品种上接种进行致病型初步鉴定。研究表明可以将17个菌株分为7个致病型（Ⅰ~Ⅶ），其中Ⅴ型菌为云南高原粳稻区的优势菌群。初步构建了一套包含7个品种（黄玉、毫糯扬、TN1、珍珠矮、IR26、南粳33、金南风）的高原粳稻白叶枯病菌的鉴别品种，明确了7个致病型在这套鉴别品种上的反应型。早生爱国3号(Xa-3)、IR1545-339(xa-5)、IRBB21（Xa-21）、扎昌龙（Xa-22t，Xa-24t）对所接种菌均表现抗病，在云南高原粳稻育种中具有较好的利用前景。

关键词: 粳稻, 白叶枯病, 致病型, 鉴别品种

YU Teng-qiong ,YE Chang-rong ,XU Fu-rong ,LIANG Bin ,ZHANG Jin-yu ,WANG Jian-jun ,MAO Xiao-qiang ,DAI Lu-yuan . Preliminary Evaluation of Pathotypes of Xanthomonas oryzae pv. oryzae in Japonica Rice Region of Yunnan Plateau[J]. Chinese Journal of Rice Science.

余腾琼, 叶昌荣, 徐福荣, 梁斌, 张金渝, 王建军, 毛孝强, 戴陆园,. 云南高原粳稻区白叶枯病菌的致病型初步鉴定[J]. 中国水稻科学.

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