%0 Journal Article
%T Insecticidal activities of the non-allkaloid extracts from Tripterygium wilfordii against Plutella xylostella<br>雷公藤非生物碱对小菜蛾的生物活性研究
%A XU Hong-Xing
%A CHEN Jian-Ming
%A LU Zhong- Xian
%A CHEN Lie-Zhong
%A YU Xiao-Ping
%A <br>徐红星
%A 陈建明
%A 吕仲贤
%A 陈列忠
%A 俞晓平
%J 中国生态农业学报
%D 2006
%I 
%X The tests on insecticidal activities of the non-alkaloid extracts from Tripterygium wilfordii Hook.f.against Plutella xylostella L.were conducted.The results show that the non-alkaloid extracts from T.wilfordii has a strong antifeedance toxicity and growth inhibiting activities.The medium antifeedance concentration(AFC_ 50)of the non-alkaloid extracts against the 2 nd instar larva of P.xylosella are 34.89mg/L and 42.33mg/L in the choice and no-choice tests,respectively.The medium lethal concentration(LC_ 50)against the 2 nd instar of P.xylosella is 49.86mg/L.The non-alkaloid extracts also shows a strong growth inhibiting activity to the larva of P.xylosella.But the effect of the non-alkaloid extracts on the eggs of L.xylosella is not obvious.The egg hatchability and survival rate of the newly-hatched larva of P.xylosella treated with 400mg/L of the non-alkaloid extracts are 53.48% and 46%,respectively.
%K Tripterygium wilfordii
%K Non-alkaloid extracts
%K Plutella xylostella
%K Insecticidal activity<br>雷公藤
%K 非生物碱
%K 小菜蛾
%K 生物活性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=DC75B2352657A7FB&yid=37904DC365DD7266&vid=F3583C8E78166B9E&iid=E158A972A605785F&sid=E114CF9BB47B65BE&eid=7EBE588F611589FC&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=1&reference_num=13