水稻纹枯病菌性状多样性的研究  

Study on Diversity of Rhizoctonia solani in Rice

作　　者：肖平[1] 易润华[2] 陈小丽[2] 余伟[1] 

机构地区：[1]江西省宜春市农业科学研究所,江西宜春336000 [2]广东海洋大学农学院生物技术系,广东湛江524088

出　　处：《江西农业学报》2006年第3期125-128,154,共5页Acta Agriculturae Jiangxi

基　　金：广东省自然科学基金项目(33985)

摘　　要：从广东省679份水稻纹枯病样中分离到576个丝核菌状菌株,其中536个菌株为多核丝核菌,属于Rhizoctonia solaniAG-1 IA,20个为双核丝核菌,20个为小菌核菌(Sclerotiumspp.Tode)。广东省水稻纹枯病菌的培养性状存在丰富的多样性,菌株间菌丝宽度、生长速度和细胞核数存在明显的差异。菌株的菌丝宽度和生长速度在不同地区和县市间没有显著差异,细胞核数有明显的差异。576 Rhizoctonia - like strains are isolated from 679 rice samples of Rhizoctonia solani, among them 536 strains belong to Rhizoctonia solani AG - 1 IA, 20 strains are binueleate Rhizoctonht spp. , and the other 20 strains are Sclerotium spp. There is rich diversity in the cultural traits of R. solani strains from Guangdong province, significant differences in hyphal width, radial growth rate and nuclear number of R. sotani among the strains are found. While there is no significant difference in hyphal width, radial growth rate of myeelium among the strains from various areas and counties, but nuclear number of R. solani has significant differenee,

关 键 词：水稻 纹枯病 菌株 多样性 

分 类 号：S435.111.42[农业科学—农业昆虫与害虫防治]