西南地区玉米纹枯病菌致病力鉴定与23份玉米品种的抗性鉴定  

Pathogenicity identification of Rhizoctonia spp. in maize sheath blight fromsouthwest China and the resistance of 23 corn varieties

作　　者：崔丽娜[1] 李晓[1] 章振羽[1] 张海燕 刘世建 龙强 邹成佳[1] CUI Li-na;LI Xiao;ZHANG Zhen-yu;ZHANG Hai-yan;LIU Shi-jian;LONG Qiang;ZOU Cheng-jia(Institute of Plant Protection,Sichuan Academy of Agricultural Sciences/Key Laboratory of Integrated Crop Pest Management in Southwest China,Ministry of Agriculture,Chengdu 610066,China;Ya’an Institute of Agricultural Sciences,Ya’an 625000,Sichuan,China;Xichang Agricultural and Rural Bureau,Xichang 615000,Sichuan,China)

机构地区：[1]四川省农业科学院植物保护研究所/农业部西南作物有害生物综合治理重点实验室,成都610066 [2]雅安市农业科学研究所,四川雅安625000 [3]西昌市农业农村局,四川西昌615000

出　　处：《湖北农业科学》2021年第16期93-97,共5页Hubei Agricultural Sciences

基　　金：国家重点研发计划项目(2018YFD0200700);四川省科技计划项目(2021YFYZ0021);国家现代农业(玉米)产业技术体系(CARS-02-15)。

摘　　要：为明确西南地区玉米纹枯病菌致病力差异,以33株不同类群的玉米纹枯病菌为研究对象,通过苗期和成株期的人工接种,对玉米品种川单13进行纹枯病菌菌株致病力鉴定。结果表明,不同融合群的丝核菌对玉米的致病力差异明显,同一融合群内不同菌株间致病力存在差异,AG1-ⅠA对玉米致病力最强。用AG1-ⅠA、AG4-HGI、AG2-2ⅢB、WAG-Z 4个不同融合群的菌株对23个品种进行抗性鉴定。用AG1-ⅠA的菌株进行玉米品种抗性鉴定时,品种间抗性差异明显,其中,表现高感的品种1份,占比为4.35%;感病的品种6份,占比为26.09%;中抗的品种11份,占比为47.82%;抗病的品种5份,占比为21.74%;无高抗品种。用其他融合群进行接种,品种抗性仅个别为抗病品种,绝大部分为高抗品种,无法鉴定出抗性差异。In order to clarify the differences in the pathogenicity of maize sheath blight strain in southwest China,33 strains of different groups of maize sheath blight strain were selected as the research object,and the pathogenicity of maize cultivar Chuandan 13 was identified by artificial inoculation at seedling stage and adult stage.The results showed that the virulence of different groups of Rhizoctonia on maize was significantly different,and the virulence of different strains in the same group was also different,moreover,the viru⁃lence of AG1-ⅠA was the strongest in these groups.The resistance of 23 varieties were identified by four strains of AG1-ⅠA、AG4-HGI、AG2-2ⅢB、WAG-Z.The resistance differences among varieties were obvious when AG1-ⅠA was used to identify the resistance of maize varieties,including 1 highly susceptible cultivar,accounting for 4.35%;6 susceptible cultivars,accounting for 26.09%;11 moderately resistant cultivars,accounting for 47.82%;5 resistant cultivars,accounting for 21.74%;And no high resistant varieties.The resistance difference could not be identified when inoculated with the other groups since most of varieties were high resistance and individual was resistance.

关 键 词：玉米 纹枯病菌 致病力 抗性 西南地区 

分 类 号：S435.131[农业科学—农业昆虫与害虫防治]