博落回提取物对菜粉蝶幼虫的拒食活性  

Antifeedant Bioactivity of Extract from Macleya cordata against the Larvae of Pieris rapae

作　　者：张国洲[1] 尤民生[2] 

机构地区：[1]贵阳学院生环系,贵州贵阳550005 [2]福建农林大学资源环境学院,福建福州350002

出　　处：《安徽农业科学》2009年第25期11904-11905,共2页Journal of Anhui Agricultural Sciences

基　　金：博士后基金资助课题

摘　　要：[目的]测定博落回提取物对菜粉蝶5龄幼虫的拒食活性。[方法]采用叶碟法,分别就博落回植物不同部位对菜粉蝶5龄幼虫的拒食活性进行了测定。[结果]当菜粉蝶5龄幼虫取食用0.400%的博落回整株植物的乙醇提取物处理过的叶碟24和48 h后的选择性拒食率分别为87.50%和89.56%。当菜粉蝶5龄幼虫分别取食用1.000%的博落回植物根、茎、叶乙醇提取物处理过的叶碟后,24 h的非选择性拒食率分别为91.78%、91.01%、90.63%,48 h的拒食率分别为89.33%、88.91%、86.76%。[结论]博落回植物提取物对菜粉蝶5龄幼虫有很强的拒食活性。[ Objective ] The aim of the research was to determin the bioactivity of antifeedant of extract of Macleya cordata against the 5^th instar larvae of Pieris rapae. [ Method] Using leaf-disc method, the antifeedant bioactivities of ethanol extract from the plant Macleya cordata against the 5^th instar larvae of insect Pieris rapae was determined resp. [ Result] The 5a instar larvae of the insect Pieris rapae was feed the leaf disc treated with 0. 400% ethanol extracts from the plant Macleya cordata, The selective anfifeedant rate of extract against the larvae was 87.50% and 89.56% after 24 and 48 h rspe. The 5^th instar larvae of the insect Pieris rapae was feed the leaf disc treated with 1. 000% ethanol extracts from the root, stem and leaf of plant Macleya cordata, The non-selective antifeedant rate of extracts against the larvae was 91.78%, 91.01% and 90.63% after 24 h resp. , and 89.33%, 88.91% and 86.76% after 48 h resp. [Conclusion] The bioactivity of antifeedant of extracts from Macleya cordata against the 5^th instar larvae of Pieris rapa. was strong.

关 键 词：博落回 菜粉蝶 拒食活性 

分 类 号：S482.39[农业科学—农药学]