鸦胆子提取物对菜青虫幼虫取食和生长发育的影响  

Effect of Brucea javanica extracts on feeding and growth and development of Pieris rapae Larvae

作　　者：曾涛[1] 黎柳峰[1] 韦德卫[1] 陈海珊[2] 刘演[2] 

机构地区：[1]广西农业科学院植物保护研究所,广西南宁530007 [2]广西壮族自治区中国科学院广西桂林植物研究所,广西桂林541006

出　　处：《农药》2006年第3期196-198,共3页Agrochemicals

基　　金：国家自然科学基金(30269002);广西自然科学基金(桂科配0339001)联合资助项目;广西农业科学院科技发展基金资助项目[2003001(Z)]

摘　　要：测定了鸦胆子沉淀部分(I)、氯仿、乙酸乙酯、正丁醇和水抽提物对菜青虫4龄幼虫的拒食、抑制生长发育和毒杀活性。结果表明,在10mg/ml浓度下,处理24h,除了水提取物活性较低外,沉淀部分(I)、氯仿、乙酸乙酯、正丁醇抽提物对菜青虫4龄幼虫的拒食率和生长抑制率均在80%以上。处理48h,除鸦胆子氯仿抽提物对菜青虫4龄幼虫的拒食活性仍然保持高活性,拒食率达95.50%外,沉淀部分(I)、乙酸乙酯、正丁醇抽提物活性的拒食率和生长抑制率有所降低,均在60%￣75%之间。处理5d后,氯仿和乙酸乙酯抽提物的幼虫死亡率均为100%,化蛹率均为0,而水提取物与对照一样。Antifeeding, inhibition of growth and development, and insecticidal toxicity on 4th instar larvae of Pieris rapae were determined for precipitate fraction 1, chloroform, ethylacetate, n-butyl alcohol, and water extracts of Brucea javanica. Treatment for 24 h with a 10 mg/ml concentration provided 〉80% antifeeding and growth inhibition for fraction 1, chloroform, ethylacetate, and n-butyl alcohol extracts, with the water extract showing the lowest biological activity. After 48 h of treatment, the chloroform extract provided a strong antifeeding activity of 95.50%, while antifeeding and growth inhibition activity of the other extracts were reduced and were between 60 and 75%. After 5 d of treatment, the larval death rate and pupation rate of the chloroform and ethylacetate extracts were 100 and 0%, respectively, while larval death rate and pupation rate of the water extracts were equivalent to the untreated check.

关 键 词：鸦胆子 植物提取物 菜青虫 拒食作用 生长发育抑制作用 

分 类 号：S482.3[农业科学—农药学]