木霉对草坪褐斑病的拮抗效果及耐药性  

Antagonistic Mechanism of Antagonistic Trichoderma Isolates against Turfgrass Rhizoctonia solani and Their Resistance to Funficide

作　　者：姚彦坡[1] 吕国忠[2] 孙晓东[2] 刘伟[3] 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110161 [2]大连民族学院生物资源与环境研究所 [3]辽宁出入境检验检疫局

出　　处：《中国生物防治》2006年第S1期106-111,共6页Chinese Journal of Biological Control

摘　　要：通过木霉属5菌株与大连高尔夫球场上草坪褐斑病菌的对峙培养试验,研究结果表明:哈茨木霉Thar1菌株、哈茨木霉Thar2菌株、深绿木霉Tat菌株、钩状木霉Tha菌株及桔绿木霉Tci菌株对病原菌的抑制率为:66%、73%、71%、77%、55%,而相对抑菌效果分别为2.06、3.94、2.35、3.54、2.27,可以作为草坪褐斑病菌的生防菌加以利用。在这5株木霉中以哈茨木霉Thar2对草坪褐斑病菌的拮抗作用最强。观察结果表明,哈茨木霉Thar2对草坪褐斑病菌的拮抗机制主要表现为生长竞争、重寄生及产生抗菌物质。The antagonistic experiment between Trichoderma spp.and Rhizoctonia solani, the turfgrass Rhizoctonia blight pathogen occurring in Dalian golf courses,shows that T.harzianum 1,T.harzianum 2,T.hamatum,T.citrinoviride exhibited evident inhibiting effect against the soil-borne pathogens.They are of potential biocontrol agents of the Rhizoctonia solani. Among the tested Trichoderma isolates,T.harzianum 2 showed the strongest antagonistic effect.The examination of antagonistic mechanism showed that Trichoderma s...

关 键 词：木霉菌 草坪 草坪褐斑病菌 拮抗作用 杀菌剂 

分 类 号：S436.8[农业科学—农业昆虫与害虫防治]