Pathotype Identification of Plasmodiophora brassicae Woron.Collected from Chinese Cabbage in Henan Province
YUAN Yuxiang
ZHAO Yanyan
WEI Xiaochun
YAO Qiuju
JIANG Wusheng
WANG Zhiyong
LI Yang
XU Qian
YANG Shuangjuan
ZHANG Xiaowei
Abstract：In order to clarify the pathotype of Plasmodiophora brassicae Woron.on Chinese cabbage in Henan province,two isolates XY-1 and XY-2 collected from Chinese cabbage clubbed roots in Xinye county,representing original and newly introduced pathogens were identified respectively.The identification was carried out by inoculating spore suspension based on the differential sets of Williams system and ECD system.The result showed that both XY-1 and XY-2 were classified into the pathotype 4 of P.brassicae based on the Williams differential system,while based on the ECD differential system,two different pathotypes were classified with XY-1 as pathotype ECD16/15/31 and XY-2 as pathotype ECD21/31/31.The inoculating test showed that the newly introduced pathogen (XY-2) was more virulent in pathogenicity on Chinese cabbage than the original one (XY-1).The above results indicated that the ECD system was more precise than the Williams system due to lager number and more species of differential hosts used for classification,which could further divide the pathotype 4 into different types.
Keywords：Chinese cabbagePlasmodiophora brassicaepathotypeWilliams systemECD system
Publication Date：2017-07-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 71-76 )