53种野生植物提取物对菜粉蝶幼虫的生物活性测定

Bioactivities of Extraction of 53 Kind of Wild Plants Against Pieris rapae

测定了采自小陇山林区的53种植物样品的丙酮提取物对菜粉蝶5龄幼虫的生物活性,筛选出了对试虫拒食率在50%以上的植物样品12个,其中小果博落回丙酮提取物对菜粉蝶幼虫的拒食活性最高,拒食率为84.5%,拒食活性较高的还有麻叶荨麻、川楝、南蛇藤、大黄、苦楝、烟草、白头翁、曼陀萝、宽叶荨麻、钩腺大戟、毒芹,拒食率分别为73.7%、71.6%、64.5%、60.2%、58.2%、56.1%、55.9%、53.3%、52.8%、51.9%、51.2%。

The bioactivity of the acetone extracts of 53 species wild plants collected from Xiaolongshan forest area were tested with Pieris rapae in the laboratory. Results showed that antifeedant rate to the test insects is more than 50% of them were 12 species,of which the antifeedant rate of 84.5% of Macleaya microcarpa （Maxim.） Fedde was highest,antifeedant rate also higher were Urtioca cannabina L. ,Melia toosendan Sieb. et Zucc. , Celastrus orbiculatus Thunb. ,Rheum palmatum L. , Melia azedarach L. , Nicatiana tabacum L. , Pulsatilla chinensis （Bge.） Regel, Datura stramonium L. , Urtiac laetevirens Maxim. , Euphorbia sieboldiana Morr. et Decne, Cicuta virosa L., antifeedant rates were 73. 7%, 71.6%, 64. 5 %, 60. 2%, 58.2%,56.1%,55.9%,53.3%,52. 8%,51.9%,51.2%.