青枯菌无致病力菌株对烟草青枯病的控病作用初步研究  

A preliminary study on the control of tobacco bacterial wilt by avirulent strains of Ralstonia solanacearum

作　　者：肖田[1] 肖崇刚[1] 邹阳 袁希雷[1] 

机构地区：[1]西南大学植物保护学院,重庆400716 [2]云南省楚雄州烟草公司武定县分公司,651600

出　　处：《植物保护》2008年第2期79-82,共4页Plant Protection

基　　金：重庆市烟草公司资助项目

摘　　要：从茄子、番茄、辣椒、烟草青枯病株中分离出116株无致病力青枯菌,室内平板喷雾法拮抗试验结果表明,有21株菌在NA培养基上可明显抑制青枯菌TbRs的生长;烟草MSK326品种温室盆栽控病试验表明,Tmjd1-3和Aujd8-2-1两株菌具有较好控病效果,20 d后的相对防效分别为58.4%和97%。A total of 116 avirulent strains of Ralstonia solanacearum were obtained from the stems of eggplants, tomatos, capsicum and tobacco that were affected by this pathogen. In vitro antagonistic assay by spraying indicated that 21 of the strains significantly inhibited the growth of R. solanacearum TbRs on NA media. In a disease-control experiment with tobacco MSK326 carried out in greenhouses, two isolates （Tmjdl-3 and Aujd8-2-1） gave satisfactory results, with 58.4% and 97% relative control rates, respectively.

关 键 词：烟草 青枯病菌 无致病力菌株 防效 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治] S476.1[农业科学—植物保护]