%0 Journal Article
%T Bioactivities of extracts from Eichhornia crassipes (Mart.) Solms. against the larvae of diamondback moth, Plutella xylostella L<br>水葫芦乙醇提取物对小菜蛾幼虫的生物活性
%A CAI Xia
%A SHI Zu-hua
%A SHI Ying-li
%A <br>蔡霞
%A 施祖华
%A 施英利
%J 浙江大学学报(农业与生命科学版)
%D 2005
%I Zhejiang University Press
%X The effects of ethanol extracts from Eichhornia crassipes on the larvae of diamondback moth Plutella xylostella were investigated in laboratory by measuring antifeeding action of the extracts,body weight gains of the larvae and larval mortality after the larvae had fed on the extracts-coated cabbage leaves.The results indicated that leaf consumption by the insects and body weight gain of the larvae were reduced,and the larval mortality was increased.The higher the concentration of the extracts was,the more severe the effects on the pest were.The results showed that the medium antifeedant concentrations(AFC_(50)) of the extract in case of 3rd instar P.xylostella larvae were 66.09 g/L and 293.35 g/L for conditions of choice and no-choice tests,respectively.
%K Eichhornia crassipes
%K plant extract
%K Plutella xylostella
%K antifeeding action
%K growth inhibition
%K insecticidal activity<br>水葫芦
%K 植物提取物
%K 小菜蛾
%K 拒食作用
%K 生长抑制
%K 杀虫活性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=298920A27C9BAA22346FCA384240FAA4&jid=466C05D88593309B3EB5CF34361E6426&aid=782D7442BC887D4F&yid=2DD7160C83D0ACED&vid=4AD960B5AD2D111A&iid=94C357A881DFC066&sid=41A78CBB5BAB6860&eid=F16C0F639D87527E&journal_id=1008-9209&journal_name=浙江大学学报(农业与生命科学版)&referenced_num=6&reference_num=19