红果米仔兰抽提物对菜青虫的杀虫活性研究  

INSECTICIDAL ACTIVITY OF EXTRACT FROM Aglaia odorata var. chaudocensis AGAINST THE IMPORTED CABBAGE WORM, Pieris rapae

作　　者：李晓东[1] 赵善欢[1] 

机构地区：[1]华南农业大学昆虫毒理研究室

出　　处：《华南农业大学学报》1998年第1期58-60,共3页Journal of South China Agricultural University

基　　金：华南农业大学校长基金

摘　　要：将楝树科植物红果米仔兰叶的甲醇抽提物用氯仿萃取，所得萃取物对菜青虫３龄幼虫进行生物活性测试．结果表明萃取物有较高的毒杀与生长发育抑制作用，浸叶饲喂１０ｇ／Ｌ药液处理，５ｄ后试虫的生长比率为２２５％，７ｄ后死亡率达９６３％；而拒食与触杀作用则为中等活性．对试虫的拒食率为７４９％，点滴处理ＬＣ５０为２４３ｇ／Ｌ．以植物性杀虫剂川楝素与印楝油做药效对照，表明萃取物在胃毒与生长发育抑制活性方面与印楝油的相当．Bioassay of the extract partitioned with chloroform from the foliar methanol extract of Aglaia odorata var. chaudocensis (Meliaceae) for insecticidal effects on the imported cabbage worm, Pieris rapae, were carried out. The results showed that the extract possessed high effects of growth inhibithion and stomach poison. Insects fed with the contaminated leaves with 10 g/L extract obtained 96.3% mortality and 22.5% growth ratio on the 7th and the 5th day, respectively after treatment. However, the less effects were showed on antifeeding and contacting poioson. Compared with Toosendanin and Neem oil, the succeessful botanical insecticides, the effects of the extract on stomach poison and growth inhibition were similar to those of Neem oil.

关 键 词：红果米仔兰 抽提物 杀虫活性 菜青虫 

分 类 号：S482.39[农业科学—农药学] S436.341.2[农业科学—植物保护]