期刊论文

中文

植物保护

0529-1542

2007

33

6

81-85

10.3969/j.issn.0529-1542.2007.06.021

湖南省自然科学基金项目（06JJ20099/06C0008） 湖南省教育厅基金项目（05C336）

本校为第一机构

为跟踪分离苍耳的活性成分,对苍耳叶和果实的甲醇提取物进行了液-液萃取分离,测试各萃取分离物对小菜蛾（Plutella xylostella）、菜青虫（Pieris rapae）和桃蚜（Myzus persicae）的拒食、忌避（或产卵忌避）活性以及对其化蛹和羽化的影响。结果显示,苍耳的乙酸乙酯分离物较之于甲醇水分离物具有更高的活性。在0.05 g/mL处理浓度下,苍耳叶乙酸乙酯分离物对菜青虫和小菜蛾幼虫选择性拒食率高达100%和44.13%,对菜青虫非选择性拒食率为94%,对小菜蛾的选择性产卵忌避率都在50%以上,对桃蚜的选择性忌避率高于70%;同时,苍耳果实乙酸乙酯分离物处理叶片后,菜青虫幼虫无一化蛹,小菜蛾高龄幼虫发育为成虫...

The methanol extracts of the fruit and leaves of Siberian cocklebur （Xanthium sibiricurn Patrin） were ex tracted with ethyl acetate and water by liquid-liquid extraction in the laboratory for their antifeedant effect, oviposition-deterrent effect and pupation-inhibiting effect against three insect pests on crucifers, including the diamondback moth （Plutella xylostella）, cabbage white butterfly （Pieris rapae） and peach aphid （Myzus persicae）. Their antifeedant effects were examined using the larvae of P. a：ylostella and P. rapae by leaf...