辽宁省水稻纹枯病菌菌丝融合群鉴定初报  

Identification of Anastomosis Groups of Rhizoctonia solani on Rice in Liaoning Province

作　　者：刘志恒[1] 韩翔宇[1] 杨红[1] 马家瑞[1] 吕彬[1] 桑海旭[1] 

机构地区：[1]沈阳农业大学植物保护学院,沈阳110866

出　　处：《沈阳农业大学学报》2010年第1期82-85,共4页Journal of Shenyang Agricultural University

基　　金：农业部水稻现代农业技术体系专项项目

摘　　要：从辽宁省水稻主产区17个县(市)采集水稻纹枯病标样,分离获得茄丝核菌(Rhizoctonia solani)菌株73株。核相测定结果为多核丝核菌71株,双核丝核菌2株。对71株多核丝核菌,应用14个国际标准菌株进行菌丝融合群测定,结果表明:供试71株多核丝核菌,67株分属于3个菌丝融合群:即AG1-IA、AG4-HGⅠ和AG4-HGⅡ,相应菌株数分别为57,6,4,出现频率依次为85.07%、8.96%和5.97%。其余4株与所有标准菌株均不融合。Seventy-three isolates of Rhizoctonia solani were obtained from diseased tissues of rice sheath blight in 17 counties of Liaoning Province.The result of nucleolus dyeing and observated showed that 73 were divided into 71 multinucleate and 2 binucleate.According to the hyphal fusion with Ogoshi＇s anastomosis groups（AGs） of Rhizoctonia,57,6,4 isolates belonged to AG1-IA、AG4-HGⅠand AG4-HGⅡ,respectively,and the corresponding frequency were 85.07%,8.96%,5.97%.No hyphal anastomosis was observsed in the other 4 isolates.

关 键 词：水稻纹枯病 茄丝核菌 菌丝融合群 

分 类 号：S435.111[农业科学—农业昆虫与害虫防治]