Abstract:

The experiment focus on the research of resistance of rape variety to Plasmodiophora brassicae and screening with nine rape popular varieties in recent years in Yunnan province and seven the introduced rape varieties from different breeding institutes in China from 2009 by 2010 in the high elevation Banqiao Town of Longyang, Baoshan of Yunnan Province, where has been the most severely Plasmodiophora brassicae region. Experimentation result indicated that water-logging obviously aggravate Plasmodiophora brassicae and reduce remarkably ultimate harvest yield of rape in manual simulation seedling stage. Plasmodiophora brassicae showed from rape seedling stage and aggravate during peduncle growth, the incidence and disease index of this disease modest declines in the maturity stage. 16 rape testing varieties basically can be divided into three groups by resistance to disease of Plasmodiophora brassicae, ‘A35’, ‘Huayou 7’ and ‘Yunyou double 1’ showed strong abilities on resistance to disease of Plasmodiophora brassicae in all of grow period, which served as predominant species and breeding materials in the Plasmodiophora brassicae regions of Yunnan province.