小麦纹枯病菌拮抗细菌的稳定性及对小麦纹枯病菌致病作用的影响  

Stability and Effect of Pathogenic Action on Antagonistic Bacteria of Rhizoctonia cerealis

作　　者：王彰明[1] 陈群[2] 韩春香[1] 陈厚德[1] 

机构地区：[1]扬州大学农学院植物保护系,江苏扬州225009 [2]江苏省扬州市竹西中学,江苏扬州225007

出　　处：《安徽农业科学》2006年第4期702-702,809,共2页Journal of Anhui Agricultural Sciences

基　　金：江苏省自然科学基金项目(BK1999092)

摘　　要：从江苏省51个市(县)采集的550余份小麦纹枯病病叶鞘上共分离获得441个细菌分离物,其中35个菌株对小麦纹枯病菌产生了拮抗作用,占总菌株数的7.94%。经300 d转代保存后仍有28株菌保持了对小麦纹枯病菌的拮抗或抑制作用。拮抗细菌与纹枯菌混合接种小麦,对纹枯菌的侵染有抑制作用,其中GC4菌株对纹枯病的抑制率达63%。The 441 strains of bacteria were separated from 550 wheat sheaths of sharp eyespot of wheat in 51 cities （counties）of Jiangsu province. Among these, 35 strains had antagonistic effects on the pathogen of Rhizoctonia cerealis,representing 7.94 % of all strains. Through preservation of 300 days,28 strains still maintained the antagonistic or inhibition effect. The wheat Inoculated with the mixed antagonistic bacteria and pathogens of sharp eyespot of wheat showed the inhibition to sharp eyespot of wheat. The strain GC4 had the inhibition rate of 63 % to the sharp eyespot of wheat.

关 键 词：拮抗细菌 稳定性 小麦纹枯病菌 致病作用 影响 

分 类 号：S435.12[农业科学—农业昆虫与害虫防治]