对从杭州市郊青菜、萝卜、花椰菜上分离的6个CMV分离物进行了生物学、血清学及双链RNA比较研究。生物学测定结果表明,不同分离物在所测定的6种十字花科蔬菜上的致病力有差异。6种分离物颗粒形态、衣壳蛋白分子量和血清学方面无差异,且都属血清型Ⅰ。dsRNA分析结果表明,6个分离物的dsRNAl,2,3和4在PAGE中迁移率相似,但在1.5kb～0.4kb之间有多条量相对较少的条带,这些条带在不同分离物之间差异较大。6个分离物均含有卫星RNA。 The biological, serological and double-stranded RNA of six CMV isolates isolated from vegetables, radish and cauliflower in Hangzhou suburbs were compared. The results of biological assays showed that the pathogenicity of different isolates on the six cruciferous vegetables tested differed. There was no difference in the morphology, capsid protein molecular weight and serology of the 6 isolates, all of which belonged to serotype Ⅰ. The results of dsRNA analysis showed that dsRNA1, 2, 3 and 4 of 6 isolates had similar mobility in PAGE, but there were many bands with relatively small quantity between 1.5kb and 0.4kb, Differences between the larger objects. All six isolates contained satellite RNA.