摘要
从江苏省玉米主产区的徐州、连云港、淮阴、盐城、南通和扬州市的１９个县（市）的春、夏玉米上，共分离出７５株纹枯病菌株。经菌丝融合群测定，它们属立枯丝核菌（Ｒｈｉｚｏｃｔｏｎｉａｓｏｌａｎｉ）ＡＧ１菌丝融合群中的两个亚群：ＡＧ１－ＩＡ和ＡＧ１－ＩＣ。其中，ＡＧ１－ＩＡ占优势，为分离总菌数的９３．３％。在ＡＧ１－ＩＡ亚群中，来源不同的菌株间对不同药剂的敏感性存在明显差异；
Seventy five fungus isolates of corn sheath blight ( Rhizoctonia ) were isolated from summer corn and spring corn in 19 counties of Jiangsu province. Anastomosis tests showed that the 75 isolates belonged to groups AG 1 IA and AG 1 IC of Rh.solani. The AG 1 IA group was predominant, representing 93 3% of all the isolates. There were significant pathogenicity differences among the isolates of the AG 1 IA group. There were also significant differences in sensitivity to three fungicides among different isolates of the AG 1 IA group.The sensitivity of the AG 1 IA group to the fungicide Wenmeijing was the highest, and to the frungicide Jinggang mycin (Validamycin) was the lowest.
出处
《江苏农业学报》
CSCD
北大核心
1997年第2期94-98,共5页
Jiangsu Journal of Agricultural Sciences
基金
江苏省"八五"农业重点研究项目
关键词
玉米
纹枯菌
融合群类型
致病力
药剂敏感性
corn sheath blight
types of anastomosis
pathogenicity
sensitivity to fungicides
