YX拟青霉菌发酵液浓缩物对马铃薯晚疫病菌的离体抑制活性  

Inhibitory activity of fermentation liquid condensate of Paecilomyces farinosus against Phytophthora infestans in vitro

作　　者：从心黎[1] 杨明挚[1] 李灿辉[2] 陈善娜[1] 

机构地区：[1]云南大学生命科学学院,云南昆明650091 [2]云南师范大学薯类作物研究所,云南昆明650092

出　　处：《西南农业学报》2005年第2期153-156,共4页Southwest China Journal of Agricultural Sciences

基　　金："十五"云南省科技攻关项目(2002NG09);云大211二期建设及植物学博士点经费资助

摘　　要：测定YX拟青霉菌发酵液浓缩物(YFP)对不同生长发育阶段的马铃薯晚疫病菌的抑菌活性,发现YFP对晚疫病菌游动孢子的释放、菌丝生长具有明显的抑制作用,4g/L的YFP对晚疫病菌游动孢子释放的相对抑制率达93 36%,2g/L的YFP对菌丝生长的相对抑制率达63 00%,但YFP对孢子囊和游动孢子的萌发几乎没有抑制活性。The inhibitory activity of fermentation liquid condensate of YX Paecilomyces farinosus (YFP) against Phytophthora infestans was tested at different stages, in vitro. The results showed that YFP strongly inhibited the mycelia growth and the release of zoospores from sporangia. The mycelia growth rate was inhibited 63.00 % at dose of 2 g/ L. The inhibition rate of release of zoospores from sporangia by YFP at the dose of 4 g/ L was 93.36 %. But YFP almost had no effect on the inhibitory activity of the germination of zoospores and sporangia.

关 键 词：YX拟青霉菌 马铃薯晚疫病菌 抑制作用 离体活性 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]