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| Identification of Clubroot Resistant Varieties of Chinese Cabbage to Plasmodiophora brassicae from Different Regions |
| YANG Xiao-yun，ZHANG Shu-xia，ZHANG Qing-xia，SI Chao-guang，WANG Yuan，WANG Dian-chun |
| （Qingdao Academy of Agricultural Sciences，Qingdao 266100，Shandong，China） |
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Abstract Plasmodiophora brassicae of Chinese cabbage from Qingdao in Shandong Province，Shuanglong in Yunnan Province，and Taibai in Shaanxi Province were innoculated to 49 Clubroot Resistant（CR）Chinese cabbage varieties to carry out identification．The results showed that the Chinese cabbage varieties’ resistances to Plasmodiophora brassicae from 3 above locations were different．32 varieties had the same resistance to Plasmodiophora brassicae from Qingdao in Shandong Province，and Taibai in Shaanxi Province．We speculated that the physiological races from these 2 locations were the same．Plasmodiophora brassicae from Shuanglong in Yunnan Province was physiological race distinctively different from that of Qingdao in Shandong Province and Taibai in Shaanxi Province．Plasmodiophora brassicae from Shuanglong in Yunnan Province had strong pathogenicity，and less resistant resource．
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Received: 22 October 2014
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