江西农业学报2012，Vol.24Issue(3)：85-86,97,3.
大青叶对小菜蛾杀虫活性部位的初步筛选
Preliminary Selecting of Insecticidal Activity Parts of Folium Isatidis against Plutella xylostella
摘要
Abstract
: In order to study the insecticidal activity parts of folium isatidis against Plutella xylostella, the active substance of folium isatidis was extracted through ultrasonic wave by using ethanol as the menstruum, the extract was leached respectively by petroleum ether, chloroform, ethyl acetate and n - butanol, and its insecticidal activity was determined by leaf disc method. The larvae of Plutella xylostella fed by cabbage leaves soaked in n - butanol extract were totally dead after 24 hours, and they fed by cabbage leaves soaked in petroleum ether extract were completely dead after 48 hours. There were various degrees of deaths for the larvae of Plutella xylostella within 144 hours after they fed on the cabbage leaves soaked in ethyl acetate and ethanol extracts. The results showed that every extract from folium isatidis had a certain contact toxicity against Plutella xylostella, and the n - butanol and petroleum ether extracts had much more active substance against Plutella xylostella.关键词
大青叶/小菜蛾/杀虫活性Key words
Folium isatidis/ Plutella xylostella/ Insecticidal activity分类
农业科技引用本文复制引用
唐晓清,王康才,吴健..大青叶对小菜蛾杀虫活性部位的初步筛选[J].江西农业学报,2012,24(3):85-86,97,3.基金项目
公益性行业专项(200903008-02-06). （200903008-02-06）
