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从江苏省具代表性的油菜菌核病发生区采集菌核病菌，并接种不同油菜品种的叶片，研究油菜品种与病菌的相互作用。结果表明，菌核菌不同菌株的致病力具有显著差异，扬州菌株ＪＳ１、通州菌株ＪＳ５和金湖菌株ＪＳ３致病力较强，而丹阳菌株ＪＳ６和溧阳菌株ＪＳ２致病力较弱。供试各油菜品种间发病无显著差异，但菌株与品种间互作效应显著。溧阳菌株ＪＳ２特别适应于９６０５品种；丹阳菌株ＪＳ６特别适应于９５０３品种；金湖菌株ＪＳ３最适应８９－５６品种；如皋菌株ＪＳ４最不适应９５０３品种，对其它品种具有广谱适应性；通州菌株ＪＳ５较不适应ｍａｒｎｏｏ品种，而扬州菌株ＪＳ１则对所有品种都具有良好的适应性。
Sclerotinia sclerotiorum was collected from the representative rape sclerotiorum in Jiangsu Province and inoculated with different varieties of rape leaves to study the interaction between rape varieties and pathogens. The results showed that the pathogenicity of different strains of Sclerotinia sclerotiorum was significantly different. The virulence of strains JS1, Tongzhou JS5 and Jinhu was stronger than that of strain JS6 of Yangzhou and JS2 of strains Danyang JS6 and Liyang. There was no significant difference in the incidence of rape cultivars tested, but the interaction between strains and cultivars was significant. Strain JS6 of Liyang was especially suitable for cultivar 9605, strain JS6 of Danyang was especially suitable for cultivar 9503, strain JS3 of Jinhu was most suitable for cultivar 89-56, strain JS4 of Rugao was the least suitable for cultivar 9503 and had broad-spectrum adaptability to other varieties. Tongzhou strain JS5 Less suitable for marnoo varieties, and Yangzhou strain JS1 has good adaptability for all varieties.