非嗜食植物次生化合物对小菜蛾实验种群的干扰作用

以干扰作用控制指数(IIPC)为评价指标,评价了20种非嗜食植物乙醇抽提物对小菜蛾实验种群的控制作用,结果表明,白花蒿Artemisia lactiflora Wall、反枝苋Amaranthus ratroflexus L．、茜草Rubia cordifolia L．、飞机草Chromolaena odorata L．、打碗花Calystegia hederacea Wall．、粪箕笃Stephania longa Eour．、刺儿菜Gephalalanoplos segetum Bge．、猪毛草Scirpus wallichii Nees．对小菜蛾实验种群具有较强的干扰作用,干扰作用控制指数均在0．2以下。

Interference effects of extracts of non-preferable plants on experimental population of Plutella xylostella

The inteference index of population control (IIPC) were used to evaluate the interference effects of alcohol extracts from 20 species of non-preferable plants by means of life table approaches of diamondbach moth(DBM). Among them the alcohol extracts from 8 species of the plants,i.e. Artemisia lactiflora Wall., Amaranthus retroflexus L., Rubia cordifolia L., Chromolaena odorata L., Calystegia hederalea Wall., Stephania longa Lour., Cephalanoplos segetum Bge. and Scirpus wallichii Nees. revealed the better results to control the population of DBM than those from other plants. The IIPCs of all the extracts from plants mentioned above on DBM were all less than 0.2.