苜蓿尺蠖核型多角体病毒对甜菜夜蛾的致病力和传播性研究  

The Pathogenicity and Prevalence of AcMNPV to Spodoptera exigua

作　　者：赵润洲[1] 徐艳聆[1] 秦利[2] 张涛[2] 聂磊[2] 王玲玲[2] 

机构地区：[1]河南科技学院,河南新乡453002 [2]沈阳农业大学生物科学技术学院,辽宁沈阳110161

出　　处：《河南农业科学》2007年第6期74-76,共3页Journal of Henan Agricultural Sciences

基　　金：国家教委留学回国人员科研启动资金(367号);河南科技学院高学历人才科研启动项目

摘　　要：研究了苜蓿尺蠖核型多角体病毒AcMNPV-AaIT对甜菜夜蛾的致病力和传播流行性。结果表明:AcMNPV-AaIT对甜菜夜蛾有较高的毒力,温度对毒力有很大的影响,在17℃与23℃的条件下,LC50分别为104.56,105.92PIB/mL;感病幼虫的尸体容易腐烂流脓,且脓汁内含有大量病毒。低温贮藏对该病毒的毒力没有明显影响,说明AcMNPV-AaIT有较好的传播流行性,是一种理想的生防病毒。The pathogenicity and prevalence of AcMNPV to Spodoptera exigua was studied in the paper. The results showed that the AcMNPV-AaIT had high virulence to Spodoptera exigua. The influence of temperature on toxicity of AcMNPV-AaIT was significant. At 17℃ and 23℃, the LC50 of AcMNPV-AaIT to Spodoptera exigua larvae was 10^4.56 and 10^5.92 PIB/mL, respectively. The dead insects infected by the AcMNPV-AaIT were decayed and suppurated easily and the pus contained a mass of virus. The toxicity of AcMNPV-AaIT stored at 4 ℃ was not obviously changed. This suggested that the AcMNPV-AaIT has fairly good propagation and is a hopeful virus for biological control.

关 键 词：甜菜夜蛾 苜蓿尺蠖核型多角体病毒 致病力 流行性 

分 类 号：S436.3[农业科学—农业昆虫与害虫防治]