黄淮海地区玉米小斑病菌生理小种鉴定与评价  

Identification and Evaluation of Physiological Races of Bipolaris maydis in Huanghuaihai Region

作　　者：赵聚莹[1] 蒋晓丽[2] 贾海民[1] 李术臣[1] 石洁[1] 张海剑[1] 

机构地区：[1]河北省农林科学院植物保护研究所河北省农业有害生物综合防治工程技术研究中心,河北保定071000 [2]保定市水利局,河北保定071000

出　　处：《河北农业科学》2012年第9期47-49,共3页Journal of Hebei Agricultural Sciences

摘　　要：2009～2011年从我国玉米主产区黄淮海地区(河北省、河南省、山东省和北京市)采集并分离了251株玉米小斑病菌株,并对其生理小种进行了鉴定。结果表明:玉米小斑病菌T小种、C小种、S型菌株和O小种的分离几率存在显著差异,其中O小种的平均分离几率明显>其他小种,是黄淮海地区玉米小斑病菌的优势小种;O小种不同菌株的致病力不同,其中强致病力菌株和中等致病力菌株的出现几率>弱致病力菌株;不同地区间C小种的分离几率差异显著。251 strains of Bipolaria maydis were collected from Hebei Province, He＇nan Province, Shandong Province and Beijing City in 2009 - 2011, and the physiological races of Bipolaris maydis were identified. The results showed that isolation frequencies of race T, race C, type S and race O of Bipolaria maydis were significantly different. Isolation probability of race O was significantly higher than those of the other races. It is suggested that race O was the dominant race of Bipolaria maydis in the corn growing area in Huanghuaihai region. The pathogenicity pathogenic strains of different strains of race O was different, the isolation probability of strong and medium of race O were more than that of the weak pathogenic strains. The isolation probability of race C showed significantly different from different areas.

关 键 词：玉米小斑病菌 生理小种 鉴定 致病力 菌株 

分 类 号：S435.131.49[农业科学—农业昆虫与害虫防治]