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| Identification of Pathotype of Plasmodiophora brassicae on Crucifer Vegetables
in Eight Provinces of China |
| DING Yun-hua，JIAN Yuan-cai，YU Yang-jun，WANG Wei-hong，GENG Li-hu a，KANG Jun-gen |
| （Beijing Vegetable Research Center，Beijing Academy of Agricultural and Forestry Science，Beijing 100097，China） |
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Abstract Identification of pathotypes of Plasmodiophora brassicae distributed in 18 clubroot
infested fields from 8 provinces of China was carried out by inoculating resting spore suspension．
The result showed that pathotype 4 of P. brassicae，as classified on the differentials of Williams，
was detected in 16 infested roots from the following regions，Weishan，Panlong and Yuxi in Yunnan
Province，Wulong in Chongqing municipality，Changyang in Hubei Province，Qingdao in Shandong
Province，Taibai in Shaanxi Province，Pixian，Pengzhou and Shifang in Sichuan Province，Jiading
in Shanghai municipality，Dalian in Liaoning Province．And pathotype 7 and 2 were detected，
respectively in the roots from Ganzi in Sichuan Province and Tonghai in Yunnan Province．Pathotype 4
appeared to be predominant on Crucifer vegetables in these regi ons.
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Received: 22 April 2013
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