COMPARATIVE STUDIES ON SIX CMV SOLATES FROM CRUCIFEROUS CROPS
十字花科蔬菜上黄瓜花叶病毒分离物的比较研究

Comparative studies were made among six CMV isolates collected from Brassica chinensis, Raphanus sativus and Brassica olemcea, which were named CMV B-931, B-932, R-931, R-932, C-931 and C-932, respectively. Biological tests showed the six isolates had different pathogenicity on six cruciferous crops. No difference was found in mophology of particles, molecular weight of coat protein and serology, and all the isolates belong to serotype I. Analysis of dsRNAs extracted from infected Nicotiana tabacum showed all the isolate had the some migration of each of the dsRNAl, 2, 3, 4. Many minor dsRNAs existed between 1.5kb and 0.5kb, and the profile of these dsRNAs were different between the isolates. All the isolates contain satellite RNA.