东北春玉米区大斑病菌生理小种鉴定  

Identification of the physiological races of Setosphaeria turcica in the corn regions of northeastern China

作　　者：赵辉[1] 高增贵[1] 张小飞[1] 庄敬华[1] 张宝艳[1] 

机构地区：[1]沈阳农业大学植物保护学院农业部北方农作物病害免疫重点开放实验室,沈阳110161

出　　处：《植物保护》2007年第6期31-34,共4页Plant Protection

基　　金："十一五"国家科技支撑项目(2006BAD08A06)

摘　　要：对2005年采自东北玉米主产区的大斑病叶标样进行分离,经单孢纯化后获得56个菌株。通过Ht单基因鉴别寄主接种鉴定,结果表明:东北地区玉米大斑病菌生理分化已呈现复杂化,0号生理小种和1号生理小种分别占35.7%和17.9%,为优势小种,其次为123号生理小种,占12.5%,另外还存在2、3、23、123N、12和23N号生理小种。The physiological races of Setosphaeria turcica were identified among 56 isolates on five corn inbred lines with different resistant genes （Ht1, Ht2, Ht3 and HtN） collected from the corn-planting regions of northeastern China in 2005. The results showed that the races with higher frequency were race 0, race 1 and race 123, accounting for about 35.7%, 17. 9% and 12.5% of the total isolates collected, respectively. Races 2, 3, 23, 123N, 12 and 23N were also identified. The physiological differentiation of Setosphaeria turcica was complicated.

关 键 词：玉米大斑病菌 生理小种 鉴定 

分 类 号：S435.131[农业科学—农业昆虫与害虫防治]