八字地老虎核型多角体病毒对原始寄主及交互寄主甘蓝夜蛾幼虫的毒力测定  

The bioassy of Xestia c-nigrum nuclear polyhedrosis virus (Xc-nNPV) with original host and alternative host cabbage moth larvae

作　　者：郑桂玲[1] 李长友[1] 张履鸿 许少甫 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030

出　　处：《东北农业大学学报》2000年第2期112-115,共4页Journal of Northeast Agricultural University

摘　　要：分别用５种浓度的八字地老虎核型多角体病毒（Ｘｃ－ｎＮＰＶ）悬液接种２龄八字地老虎幼虫和２龄甘蓝夜蛾幼虫。结果表示，两者的ＬＧ_（５０）和 ＬＴ_（５０）相差不大，可见Ｘｃ－ｎＮＰＶ对两者的毒力和潜伏期相当。用感染Ｘｃ－ｎＮＰＶ后致死的甘蓝夜蛾幼虫体内分离的病毒回接２龄八字地老虎幼虫，发现这一病毒对八字地老虎幼虫的毒力不高。Biossay of five concentration of Xc-nNPV with 2nd instar larvae of spotted cutworm and cabbage moth showed there was no significent defference of LC_(50) and LT_(50) between them. It indicated the pathogenicity and incubation period against the two pestinsects were much the same. Virus reisolated from diseased cabbage mth treated with Xc-nNPV wasess toxic to 2nd instar larvae of spotted cutworm.

关 键 词：毒力测定 生物防治 Xc-nNPV 夜蛾科害虫 

分 类 号：S476.13[农业科学—农业昆虫与害虫防治] S433.4[农业科学—植物保护]