拮抗青枯病90B4-2-2菌株作用机理探讨  

STUDY ON MECHANISM OF ANTAGONISTIC ACTION OF BACTERIAL STRAIN 90B4-2-2 ON TOMATO BACTERIAL WILT

作　　者：魏春妹[1] 张春明[1] 王建明[1] 刘宗镇[1] 赵建华[1] 

机构地区：[1]上海市农业科学院植物保护研究所,上海201106

出　　处：《上海农业学报》2000年第4期74-77,共4页Acta Agriculturae Shanghai

摘　　要：细菌 90B4 2 2对茄果类作物青枯病和烟草青枯病等有良好的防效。研究表明 ,经90B4 2 2菌液处理的番茄种子的发芽势及植株茎的粗壮度分别是对照的 1.2 3倍和 1.0 6倍 ,番茄青枯病防效达 70 %～ 80 % ,增产 11%左右 ;该菌能够在植物体内繁殖 ,并表现出对番茄种子 (浸种 )具有发芽势高、健株防病和增产作用。It was found that cells of strain 90B4-2-2 could control bacterial wilt of tomato, eggplant and tobacco.In the treatment plots where the tomato seeds were inoculated with 90B4-2-2 cells,the germination potential of tomato seeds and stem diameter of tomato plants were 1.23 times higher and 1.06 time larger respectively than those in the CK plots.The control effects on bacterial wilt of tomato were 70%～80% and the yield increased by 11.3% compared to the CK.The cells of strain 90B4-2-2 could multiply inside tomato plants and showed the effects on enhancing germination potential of tomato seeds,improving vigor of seedling,controlling tomato bacterial wilt and so increasing yield.

关 键 词：青枯病菌 茄果类青枯病 生物防治 防病机理 

分 类 号：S436.41[农业科学—农业昆虫与害虫防治] S482.292[农业科学—植物保护]