黑龙江省玉米大斑病菌生理小种组成及变化动态分析  

Analysis on the Composition and Dynamic Changes of Physiological Races of Exserohilum turcicum in Heilongjiang Province

作　　者：马立功[1] 孟庆林[1] 石凤梅[1] 刘佳[1] 李易初[1] 刘兴龙[1] 何长安[2] 纪春学[2] 王军 MA Li-gong;MENG Qing-lin;SHI Feng-mei;LIU Jia;LI Yi-chu;LIU Xing-long;HE Chang-an;JI Chun-xue;WANG Jun(Institute of Plant Protection,Heilongjiang Academy of Agricultural Sciences,Harbin 150086;Keshan Branch of Heilongjiang Academy of Agricultural Sciences,Keshan 161600;Beidahuang Kenfeng Seed Industry Co.,Ltd.,Harbin 150090,China)

机构地区：[1]黑龙江省农业科学院植物保护研究所,哈尔滨150086 [2]黑龙江省农业科学院克山分院,黑龙江克山161600 [3]北大荒垦丰种业股份有限公司,哈尔滨150090

出　　处：《玉米科学》2022年第5期143-148,共6页Journal of Maize Sciences

基　　金：黑龙江省应用技术研究与开发计划重大项目(GA19B104-5);黑龙江省农业科学院院级科研项目(2019YYYF039);黑龙江省级领军人才梯队后备带头人项目。

摘　　要：为明确黑龙江省不同生态区玉米大斑病菌生理小种组成及变化动态,采用Ht单基因常规鉴别寄主技术,对2018、2019年采自黑龙江省39个市县的138株玉米大斑病菌菌株进行生理小种鉴定,共鉴定出0、1、2、3、N、12、13、1N、2N、12N和13N号11个生理小种。所鉴定的138个菌株对Ht1、Ht2、Ht3和HtN抗性基因的毒性频率分别为46.1%、15.3%、9.3%和21.5%。分析2005~2019年间黑龙江省玉米大斑病菌生理小种组成结构及变化动态规律,发现近15年黑龙江省大斑病菌生理小种分化呈现日趋复杂化,不断有新的小种出现,从2005年的10个小种到现在16个小种均已被监测到。不同时期各小种组成及出现频率均在不断变化中,0和1号小种始终是该地区的优势小种。In order to clarify the composition and dynamic changes of physiological races of E.turcicum in different ecological regions of Heilongjiang province,the Ht single gene routine identification technology was used to identify 138 strains collected from 39 areas in 2018 and 2019,and a total of 11 physiological microspecies No.0,1,2,3,N,12,13,1N,2N,12N and 13N were identified.The virulence frequency of 138 strains to Ht1,Ht2,Ht3 and HtN resistance genes were 46.1%,15.3%,9.3%and 21.5%respectively.We analyzed the composition and dynamic changes of physiological races of E.turcicum in Heilongjiang province from 2005 to 2019.It was found that the differentiation of physiological races of E.turcicum in Heilongjiang province became more and more complicated in recent 15 years,and new races appeared constantly.From 10 races in 2005 to 16 races now,all of them have been monitored.The composition and frequency of occurrence of each minor races have been changing over time,race 0 and race 1 are always being the main races in this area.In addition,according to the geographical division and accumulated temperature zone,the source areas of the samples were divided into four typical ecological regions.

关 键 词：玉米 大斑病菌 生理小种 动态变化 

分 类 号：S435.131[农业科学—农业昆虫与害虫防治]