节点文献
放线菌活性产物对烟草赤星病抑制作用的初步筛选研究
Primary screening of the active metabolites of actinomycetes for controlling tobacco brown spot disease
【摘要】 通过孢子萌发法从278份放线菌发酵液提取物中筛选出对烟草赤星病菌[Alternaria alternate(Fr.)Keissler]孢子萌发抑制率在50.00%~100.00%的有34份,占总发酵液提取物的12.23%;离体叶片悬滴法测定了孢子萌发抑制率70%以上的发酵液提取物对赤星病的防治作用,防治效果在50%以上的有17份;并进一步在温室盆栽植株上对防治效果进行了验证试验。
【Abstract】 Through the method of conidia germination,the existing 278 fermentation broth extracts of Actinomycetes were selected for in vitro toxicological testing.The research results indicated that 34 samples screened,which occupied the 12.23 % of the total fermentation broth extract samples,showed the conidia germination inhibition rate at 50.00 %-100.00 %.Inoculated the detached leave of tobacco,the samples with the conidia germination inhibition rate over 70 % were selected for further prevention effect testing and 17 samples exhibited the prevention effect rate over 50 %.The prevention effects were further verified in a greenhouse experiment.
【Key words】 Actinomycetes; fermentation broth extract; tobacco brown spot; screening; prevention effect;
- 【文献出处】 西南农业学报 ,Southwest China Journal of Agricultural Sciences , 编辑部邮箱 ,2006年05期
- 【分类号】S435.72
- 【被引频次】10
- 【下载频次】131