摘要
通过不同浓度的发酵液对致病疫霉生长影响的检测和对马铃薯晚疫病菌孢子萌发的影响试验,发现假单孢菌20#-5菌株对致病疫霉的抑菌机制主要是抑制菌丝的生长及孢子的萌发,2.86%的发酵液的抑制率可达60%以上,高浓度的发酵液对病菌菌丝的生长起抑制而非杀死作用。通过离体叶片试验和盆钵试验,发现此菌株发酵液的主要成分对作物主要起保护作用。
Effect of different concentration of Pseudomonas spp.strain 20#-5 on the mycelial growth and germination zoospores of Phytophthora infestans indicated that pseudomonas.spp.Strain 20#-5 could inhibit the mycelial growth of Phytophthora infestans on potato,tomato and tobacco.Effect of 2.86 % fermented broth could reach higher than 60 %.High concentration of fermented broth suppressed growth of mycelial than killed them.The effect of inhibition was obvious on the germination zoospores of Phytophthora infestans.In experiment of pot culture,strain 20#-5 took a better action on protection than on control of Phytophthora infestan especially by living bacteria.
出处
《西南农业学报》
CSCD
2007年第5期1002-1006,共5页
Southwest China Journal of Agricultural Sciences
基金
重庆市科委项目7592
关键词
假单孢菌
致病疫霉
抑菌机制
Pseudomonas spp.
Phytophthora infestans
antimicrobial mechanism
