云南高海拔粳稻区白叶枯病菌致病型的鉴定  

Pathotype identification of Xanthomonas oryzae pv. oryzae isolated from high altitude Japonica rice production region in Yunnan Province

作　　者：和建平[1,2] 杨雅云[1] 冯云程[1,2] 董超[1] 阿新祥[1] 张恩来[1] 汤翠凤[1] 徐福荣[1] 戴陆园[1] 

机构地区：[1]云南省农业科学院生物技术与种质资源研究所,昆明650223 [2]云南大学生命科学学院,昆明650091

出　　处：《植物病理学报》2011年第6期635-639,共5页Acta Phytopathologica Sinica

基　　金：农业部"948"计划资助项目(2006 G1);云南省人才培养项目(2008 PY049);云南省自然科学基金资助项目(2007 C233M)

摘　　要：水稻白叶枯病是危害水稻的重要细菌性病害之一,病原为稻生黄单胞菌水稻致病变种Xan-thomonas oryzae pv. oryzae(Xoo)。近10年来云南省水稻白叶枯病的危害向高海拔粳稻区扩散,在海拔2 200 m的剑川县,白叶枯病已成为最严重的水稻病害[1～2]。开展高海拔粳稻区白叶枯病菌致病型的鉴定、分布和分化研究。To identify the pathotype distribution and race differentiation of Xanthomonas oryzae pv.oryzae（Xoo）collected from high altitude japonica rice production region in Yunnan Province,32 Xoo isolates from the regions with altitude higher than 1 800 m were tested on three sets of differential rice varieties.The results showed that 32 isolates were grouped into 11 pathotypes on the differential varieties set up by Yu,et al.（2005）,7 pathotypes including resistant reaction mode RSSSSSS were firstly reported.The RRRSRSS was the dominant while RSSSSSS the most toxic.The 32 isolates were classified into 11 pathotypes and 7 ones on the differential varieties set up by Fang,et al.（1990）,and Xu,et al.（2004）,respectively.And in these cases of 7 and 5 pathotypes were also firstly reported respectively.There were 6 isolates which showed unreported pathotypes or new pathotypes on any one of the three sets of differential rice varieties.These 6 isolates might be further classified into 3 or 4 different pathotypes.The pathotype distribution of Xoo varied with the altitudes and regions.

关 键 词：白叶枯病 水稻 致病型 鉴定 

分 类 号：S432[农业科学—植物病理学]