Abstract

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Title:: Methods for Identification of Chinese Cabbage Resistance to Clubroot

Author(s):: KONG Xiandi; LIU Yan; HUANG Zhihui; GUO Meng; WU Xilin; ZHANG Yaowei; (College of Horticulture & Landscape Architecture,Northeast Agricultural University,Harbin,Heilongjiang 150030)

Abstract:: In order to establish a set of methods for identification of Chinese cabbage resistance to clubroot，the pathogen of clubroot was obtained from Chinese cabbage field in Nancheng village of Ashi River Subdistrict Office,Acheng district,and a Chinese cabbage variety ‘Dongnong 909’ was used as experimental material.The effect of four factors on the incidence of clubrot was analysed in L9(3)4 orthogonal test,which included activate matrix of the pathogen,the pathogen activation time,transplant matrix of seedling and investigation time after seedling transplanted.The results showed that the best substrate of pathogen activation was turfy soil,the incidence was the most severe in 10 days after pathogen activation,the best investigation time was 34 days after post-transplant.The research would provide a set of relatively effective methods for identification of Chinese cabbage resistance to clubroot,and provide some suggestions for identification of other brassicaeous vegetable resistance to clubroot.