闽东太子参花叶病发病规律调查及防治途径研究

Occurrence and control of Tizhi jinseng virus diseases in Mindong

太子参以种根无性繁殖,病毒病逐年加重,闽东太子参花叶病发病面积占总栽培面积的30%-40%,大部分种植区发病率达60%-90%,平均产量损失达28.2%.经鉴定,闽东太子参花叶病病原为黄瓜花叶病毒CMV,可通过种根无性繁殖传至下一代,也可通过土壤和蚜虫传染给健株.经试验,提出了以茎尖脱毒苗为主,进行土壤消毒、切断传播途径的综合防治措施.

Taizhi jinseng virus diseases are gradually serious year by year because of root tubers asexual propagation . This disease covers 30%-40% of total area ,incidence rate of it reaching 60%-90%,resulting losing about 15.4% yield in Mindong area .This disease pathogen is dentified to be virus CMV. Later generation can be infected by the pathogen via toot tubers,soil and aphids with the pathogen.Threugh experiment, comprehensive controls are put forward with using free-virus root tubers from meristem tip culture, planted on disinfecting soil, eliminating the infection way of the virus as well.