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作 者:袁盛勇[1] 孔琼[1] 沈登荣[1] 陈斌[2] 田学军[1] 李珣[1]
机构地区:[1]红河学院生命科学与技术学院,云南蒙自661100 [2]云南农业大学植物保护学院,昆明650201
出 处:《农药》2013年第9期686-688,共3页Agrochemicals
基 金:红河学院植物保护硕士授权点建设项目;国家自然科学基金项目(30860005)
摘 要:[目的]筛选出防治番石榴实蝇Beauveria bassiana(Bezzi)的有效生防菌。[方法]分别采用喷雾法和浸渍法测定不同浓度的球孢白僵菌Bb080920分生孢子液对番石榴实蝇成虫、幼虫和蛹的室内毒力。[结果]成虫的最大校正死亡率达(91.83±2.42)%,致死中浓度(LC50值)为(2.6281±0.2362)×108个/L,致死中时间(LT50值)为(4.61±0.37)d;幼虫最大累计校正死亡率达(95.23±3.13)%,LC50值为(2.5416±0.8395)×108个/L,LT50值为(4.36±0.42)d;蛹的累计校正死亡率最大达(82.59±2.78)%,LC50值为(2.7692±0.1538)×108个/L,LT50值为(5.05±0.68)d。[结论]球孢白僵菌Bb080920菌株毒力测定表明具有很高的毒性,未来有良好的应用前景。[Aims] The paper aims to screen out effective biocontrol fungus against Bactrocera correcta (Bezzi). [Methods] The virulence of Beauveria bassiana (Bb080920) conidia against different stages (adult, larvae and pupae) of 13. correcta (Bezzi) was tested in laboratory by spraying and dipping methods. [Results] The adjusted accumulative mortality rate of the adult was (91.83±2.42)%, the lethal concentration (LC50) was (2.628 1±0.2362)×10^8 spores/L, the lethal time (LT50) of adult was (4.61±0.37) d. The adjusted accumulative mortality rate of the larvae was (95.23±3.13)%, LC50 was (2.5416±0.8395)×10^8 spores/L, LT50 was (4.61±0.37) d. The adjusted accumulative mortality rate of the pupae was (82.59±2.78)%, LC50 was (2.7692±0.153 8)×10^8 spores/L, LT50 was (4.61±0.68) d. [Conclusions] These studies indicated that Beauveria bassiana Bb080920 has a high toxicity to B. correcta (Bezzi) with good prospect in the future.
分 类 号:S433[农业科学—农业昆虫与害虫防治] S476.12[农业科学—植物保护]
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