分离自小麦赤霉病和玉米茎基腐病的禾谷镰孢菌的致病性研究  

Pathogenicity of Fusarium graminearum Causing Wheat Head Scab and Maize Stalk Rot

作　　者：张志博[1] 高增贵[1] 张小飞[1] 庄敬华[1] 隋鹤[1] 

机构地区：[1]沈阳农业大学植物免疫研究所,辽宁沈阳110161

出　　处：《辽宁农业科学》2010年第6期1-4,共4页Liaoning Agricultural Sciences

基　　金：国家"十一五"科技支撑项目(2006BAD08A06);辽宁省教育厅重点实验室项目(LS2010149)

摘　　要：采用单花滴注方法和注射法交互接种,分别对8株分离自小麦赤霉病穗和11株分离自玉米茎基腐病茎的禾谷镰孢菌进行致病力测定。结果表明,所有供试菌株均能够成功交互侵染小麦和玉米,二者致病能力不同,存在明显差异。小麦赤霉病和玉米茎基腐病都是土传病害,染病作物病残体会造成跨寄主侵染,在小麦玉米轮作区两种病害可能会出现日渐严重的趋势。Pathogenicity of Fusarium graminearum,8 isolates from wheat diseases head,11 isolates from corn diseased stalk was studied.With single flowers drip and stalk injection methods,the interactive inoculation of Fusarium graminearum on the healthy wheat and maize plants was tested.All tested strains were able to infect plants interactively.But the pathogenicity of the two pathogen,Fusarium graminearum were significantly different.As the wheat scab and maizen stalk rot were soil-borne diseases,diseased survival was primary infectious pathogen of cross-infection host.So,wheat head blight and maize stalk rot will become more serious in wheat and maize rotation area of China.

关 键 词：小麦赤霉病 玉米茎基腐病 禾谷镰孢菌 致病性 

分 类 号：S432.22[农业科学—植物病理学]