蜡蚧轮枝菌对麦无网长管蚜的室内毒力测定  

Virulence of Verticillium lecanii to Acyrthosiphon dirhodum in Laboratory

作　　者：耿锐梅[1] 杨美林[1] 周天雄[1] 

机构地区：[1]云南农业大学植物保护学院,云南昆明650201

出　　处：《云南农业大学学报》2004年第2期174-176,共3页Journal of Yunnan Agricultural University

基　　金：教育部科学技术重点项目(02143)

摘　　要：采用Hall生物测定方法,就昆明地区的蜡蚧轮枝菌KM9803菌株对麦无网长管蚜进行了室内毒力测定。结果表明:该菌株对麦无网长管蚜有很强的致病感染力,较低的孢子浓度1.3×103孢子/mL仍可造成蚜虫的感染致死,其LT50=7.87d.而高孢子浓度1.3×107孢子/mL对蚜虫感染致死LT50=3.64d.该测定结果与其它蜡蚧轮枝菌菌株测定结果作比较,可看出该菌株具有很强的致病力,这也为将来进一步研究和开发该虫生真菌提供一定理论依据。The virulence of Verticillium lecanii(KM9803) against Acyrthosiphon dirhodum was bioassayed in laboratory by using the method of Hall. The results showed that there was still a LT_(50) of 7.87?d in a lower dose of 1.3×10~3 conidia/mL and a higher dose of 1.3×10~7 conidia/mL yieled a LT_(50) of 3.64?d.Then, compared the resuts with others, the V. lecanii(KM9803) has a higher mortality also. So,the study could give a theoretical reference to the advanced study and exploitation.

关 键 词：蜡蚧轮枝菌 麦无网长管蚜 室内毒力测定 虫生真菌 生物防治 

分 类 号：S435.122.2[农业科学—农业昆虫与害虫防治] S476.12[农业科学—植物保护]