江西省蔬菜根肿病菌致病性分化研究  

Studies on virulence differentiation of Plasmodiophora brassicae infecting cruciferous vegetables in Jiangxi province

作　　者：黄蓉[1] 胡建坤[1] 张景云[2] 华菊玲[1] 李湘民[1] 黄瑞荣[1] HUANG Rong HU Jian-kun ZHANG Jing-yun HUA Ju-ling LI Xiang-min HUANG Rui-rong(Plant Protection Institute, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China Institute of Vegetable and Flower, Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China)

机构地区：[1]江西省农业科学院植物保护研究所,南昌330200 [2]江西省农业科学院蔬菜花卉研究所,南昌330200

出　　处：《植物病理学报》2017年第1期133-137,共5页Acta Phytopathologica Sinica

基　　金：国家公益性行业(农业)科研专项(201003029);江西省科技支撑计划项目(20151BBF60068);江西省科研院所基础设施配套项目(20151BBA13034);江西现代农业科研协同创新专项(JXXTCX2015005-004);江西省现代农业蔬菜产业体系病虫害防治岗位专项(JXARS);江西省重点研究计划项目(20161ACF60015);南昌市科技支撑计划项目(洪财企[2012]80号)

摘　　要：芸薹根肿病菌（Plasmodiophora brassicae）存在生理小种分化现象,国际上通常采用Williams鉴别系统[1]和欧洲根肿病菌鉴别寄主（ECD）系统[2]鉴定根肿病菌生理小种。我国尚没有研究出适合本国根肿病菌生理小种鉴定的鉴别寄主系统。国内学者研究根肿病菌生理小种通常采用Williams鉴别系统[3]。为了明确江西省蔬菜根肿病菌致病性分化及病菌小种的变化趋势,To investigate the distribution and population of Plasmodiophora brassicae and resistance levels of cruciferous vegetables to the pathogen in Jiangxi province,the physiological races of P.brassicae collected from counties of Jiangxi province were identified by Williams Identifials＇ in this paper.A total of 39 samples were collected and tested.Three races including race No.8,9 and 16 were identified,among them race No.16 was reported for the first time in China,and the occurrence frequency of race No.9 was as high as 94.87%.Based on the field investigation and glasshouse inoculation,race No.9 was non-pathogenic on head cabbage and cauliflower,but it could infect Chinese cabbage,bok-choy and purple pakchoi with disease incidence ranging from49.06%to 91.49%for different cultivars.

关 键 词：根肿病菌 致病性分化 江西省 蔬菜 生理小种分化 病菌生理小种 生理小种鉴定 鉴别寄主 

分 类 号：S436.3[农业科学—农业昆虫与害虫防治]