SeMNPV两个分离株的生物活性比较及病毒杀虫剂的应用  

Comparison of Bioactivity of Two Isolates of Spodoptera exigua Nucleopoly-hedrovirus and Application for the Viral Pesticide

作　　者：张海元[1] 梅春蕾[1] 张忠信[1] 

机构地区：[1]中国科学院武汉病毒研究所

出　　处：《中国病毒学》2005年第6期656-659,共4页Virologica Sinica

基　　金：国家863项目(2001AA246014)

摘　　要：本文对甜菜夜蛾核型多角体病毒的两个分离株(SeMNPV-M,SeMNPV-Z)的生物活性进行了比较,并对甜 菜夜蛾核多角体病毒杀虫悬浮剂的田间应用效果进行了评估。病毒生物测定结果显示,SeNPV-M和SeNPV-Z 感染三龄幼虫的半致死剂量(LD50)分别为195．8 PIBs／克饲料和242．4 PIBs／克饲料。使用6000PIB／克饲料的病 毒剂量感染三龄幼虫,其半致死时间(LT50)分别为3．50d和3．68d。甜菜夜蛾病毒杀虫悬浮剂已在工厂生产,田间 实验结果表明,甜菜夜蛾病毒杀虫悬浮剂可有效控制目标害虫的危害。The activity of two isolates of Spotoptera exigua nucleopolyhedrovirus, SeMNPV-M and SeMNPV-Z, was compared by bioassays. The LD50 values of SeMNPV-M and SeMNPV-Z in 3rd instar host larvae were 195.8 PIBs/ gram diet and 242.4 PIBs/gram diet, respectively. The LT50 values infected with 6000PIBs/gram diet were 3.50 and 3.68 days, respectively. The viral suspension formulation pesticide with SeMNPV-Z was produced and in field trials, the SeMNPV pesticide proved to be an effective control agent.

关 键 词：甜菜夜蛾核型多角体病毒 分离株 病毒杀虫悬浮剂 应用效果 

分 类 号：S482.39[农业科学—农药学]