茶皂素对蚯蚓、小菜蛾及枯萎病原真菌的急性毒性研究  

Acute toxicity effect on earthworm,plutella xylostella and fusarium oxysporum by tea saponin

作　　者：何晓玲[1] 高进勇[1] 邵敬伟[1] 

机构地区：[1]福州大学药物生物技术与工程研究所,福建福州350002

出　　处：《福州大学学报（自然科学版）》2007年第5期785-788,共4页Journal of Fuzhou University(Natural Science Edition)

基　　金：福建省发展和改革委员会资助项目(2005-598);福建省教育厅科研资助项目(JB04310)

摘　　要：为考察茶皂素灭杀害虫效果和对枯萎病原真菌的抑菌能力,采用浸液杀虫法和土壤杀虫法测定不同浓度的茶皂素对于蚯蚓的急性毒性效应;采用叶片药膜法考察茶皂素对小菜蛾拒食效果与毒力效应,采用平板法考察茶皂素对于枯萎病原真菌的抑制作用.试验结果表明,浸液杀虫法灭杀蚯蚓的有效茶皂素浓度为0.3 mg/mL,土壤杀虫法7 d内的LD50为0.8 mg/mL;茶皂素对于小菜蛾主要是拒食作用;高浓度试药(>0.39 mg/mL)的茶皂素对枯萎病原真菌有一定的抑制作用.To investigate the positive effect of tea saponin on on the fusarium wilt pathogens and bacterium. To study the killing the pests and the restraining effect acute toxic effects on earthworm in different concentrations of tea saponin by immersion method and pot soil treatment respectively. To study the effect of antifeedant and toxic activity on plutella xylostella by dipping leaves method. To study tea saponin has inhibition against the fusarium oxysporum by punch method. The available concentration of killing earthworm by immersi on method is 0.3 mg/mL, LD50 = 0.8 mg/mL to earthworm by pot soil treatment; tea saponin mostly has the effect of antifeedant; high -concentration tea saponin （ 〉0.39 mg/mL） has stated inhibition against the fusarium oxysporum.

关 键 词：茶皂素 蚯蚓 小菜蛾 枯萎病原真菌 急性毒性 

分 类 号：S482.1[农业科学—农药学]