短期35℃高温预处理与阿维菌素对小菜蛾3龄幼虫的联合作用  

Interaction between Short-term Heat Pretreatment at 35 ℃ and Avermectin on 3rd Instar larvae of Diamondback Moth,Plutella xylostella

作　　者：田素芬[1] 高飞[1] 顾晓军[1] 

机构地区：[1]福建农林大学植物保护学院,福州350002

出　　处：《北京农学院学报》2008年第1期18-21,共4页Journal of Beijing University of Agriculture

基　　金：福建省自然科学基金(B0410015);福建省青年科技人才创新项目(2004J010);福建省教育厅项目(2007F5021);福建省高等学校新世纪优秀人才支持计划资助;福建农林大学青年教师基金(B0403)

摘　　要：研究了短期35℃高温预处理与阿维菌素农药对小菜蛾3龄幼虫的联合作用,结果表明:短期高温对阿维菌素毒力的影响随35℃持续时间及阿维菌素浓度不同而不同。35℃预处理2 h,与阿维菌素的联合作用表现为相加作用;4 h对1.13,2.25 mg/L的阿维菌素毒力有拮抗作用,对其他的浓度毒力表现为相加作用;8 h对0.28,1.13,2.25 mg/L的阿维菌素毒力有协同作用,对其他浓度则表现为相加作用。研究结果初步说明,联合作用评价方法可以用于Hormesis效应研究。The interaction between short-term heat pretreatment and avermectin on 3^rd instar larvae of diamondback moth, Plutella xylostella, was investigated. The results showed that the effect of short-term heat pretreatment at 35 ℃ on toxicity of avermectin varied with heat duration and avermectin concentration. Heat pretreatment at 35 ℃ for 2 hours, the interaction effect resulted in additive at all avermection concentrations, but in the trials for 4 h, antagonism was seen when avermectin was set at 1.13 mg/L or 2.25 mg/L. When pretreated for 8 h synergism occurred inthe treatments with avermectin at 0.28 mg/L, 1.13 mg/L or 2.25 mg/L and addition in others dure might be adopted in Hormesis study.

关 键 词：小菜蛾 短期高温 阿维菌素 联合作用 

分 类 号：S481.1[农业科学—农药学]