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在江苏浙江等地的蚕豆苗上出现的红褐色环斑或白色斑驳症状.经鉴定是芜菁花叶病毒侵害的结果.在病组织中的病毒粒体为弯杆状.长度750—800nm。摩擦接种在苋色藜上,接种叶上出现大块黄色枯斑,直径约3毫米,顶叶系统感染,在克氏烟、芜菁、油菜上为系统花叶.在蚕豆苗上的症状,视品种和环境条件而异,在有限生长的品种上多为红褐色环斑.在启东蚕豆上多为白色斑驳,豆荚上也可出现变色斑。对病毒的提纯方法作了改进,用冻融的20%蔗糖溶液可代替常规的10—40%蔗糖梯度液,精提纯的效果相同。
The reddish-brown orbicular or white mottled symptoms appeared on broad bean plants in Jiangsu, Zhejiang and other places. The result was identified as the result of the inflorescence of turnip mosaic virus. The virion in the diseased tissue is bent rod. The length is 750-800nm. Friction in the amaranth Tribulus terrestris, inoculated leaves appear large yellow spot, about 3 mm in diameter, the parietal system infection, in the grams of tobacco, turnip, rape on the system of mosaic.Wide Vicia faba on the symptoms, Varies depending on species and environmental conditions, the limited growth of the species are mostly reddish brown ring-shaped spots on the Qidong broad beans are white mottled, pods may also appear discoloration. The virus purification method has been improved, with 20% sucrose freeze-thaw solution can replace the conventional 10-40% sucrose gradient, the same effect of refined purification.