四种化学诱抗剂防治黄瓜绿斑驳花叶病毒病的试验初报  

Preliminary Report about Using 4 Chemical Inducers to Control Cucumber green mottle mosaic virus Disease

作　　者：李俊香[1] 古勤生[1] 

机构地区：[1]中国农业科学院郑州果树研究所,河南郑州450009

出　　处：《中国蔬菜》2015年第7期40-44,共5页China Vegetables

基　　金：国家西甜瓜产业技术体系项目(CARS-26-13)

摘　　要：为了筛选出能够诱导瓠瓜产生黄瓜绿斑驳花叶病毒(Cucumber green mottle mosaic virus,CGMMV)病抗性的化学诱抗剂,在瓠瓜幼苗上分别喷施不同浓度的2,1,3-苯并噻二唑(2,1,3-Benzothiodiazole,BTH)、芸薹素内酯(Brassinolide,BL)、壳聚糖(Chitosan Oligosaccharide,CTS)、水杨酸(Salicylic Acid,SA)后,人工摩擦接种CGMMV,评价它们的相对防治效果。结果表明:接种前3 d用0.050 g·L-1 BTH、5.0×10-5 g·L-1 BL、1.0 g·L-1 CTS、0.138 g·L-1 SA处理均可使瓠瓜CGMMV的病情指数降低,其中5.0×10-5 g·L-1 BL防效最佳,达70.38%。进一步研究表明,BL、CTS、SA以喷药后3 d为最佳诱导时间,而BTH为喷药后1 d。4种化学物质均能诱导瓠瓜对CGMMV产生抗性,其抗性差异与诱抗剂种类、浓度及诱导时间相关。In order to screen the chemicals,which could induce resistance to CGMMV in bottle gourd[Lagenaria siceraria（Molina） Standl.],2,1,3-Benzothiodiazole（BTH）,Brassinolide（BL）,Chitosan Oligosaccharide（CTS） and Salicylic Acid（SA）,were applied to bottle gourd seedlings to test their induced resistance in this experiment.BTH,BL,CTS and SA were sprayed before the plants were inoculated with CGMMV.Their relative control effects were evaluated.The results showed that 3 days before innoculation,treatments with BTH（0.050 g · L^-1）,BL（5.0 ×10^-5 g · L^-1）,CTS（1.0 g · L^-1）,SA（0.138 g · L^-1） could significantly reduce the disease indexes.Among them,5.0 × 10^-5 g·L-1 had the best control effect,reaching 70.38%.Further studies indicated that after spraying BL,CTS,SA,3 days was the optimum inducing time,while after spraying BTH,the optimum inducing time was 1 day.Those 4 chemicals all showed potentials in inducing bottle gourd to produce resistance to CGMMV.Their differences in resistance were related with inducers and inducing times.

关 键 词：瓠瓜 黄瓜绿斑驳花叶病毒 化学诱抗剂 诱导抗性 

分 类 号：S436.421.1[农业科学—农业昆虫与害虫防治]