摘要
对甘肃省玉米叶部病害进行调查,发现一种新病害-玉米叶点霉叶斑病,分离得到引起玉米叶点霉叶斑病的病原菌,并对该病原菌进行形态学观察和致病性测定。研究结果表明,该病原菌菌落在PDA培养基上初呈白色,后期逐渐变成灰黑色,菌丝分枝,具隔膜,无色或淡褐色;分生孢子椭圆形、两端钝,无色,单胞,两端不含油球;产孢方式为内壁芽生瓶梗式(eb-ph)。根据病菌的形态特征、培养性状和致病性测定将其鉴定为玉米叶点霉(Phyllosticta zeae)。
Maize leaf spot disease was investigated in Lingtai and Lintao county of Gansu Province and a new disease was found.The pathogen causing leaf spot disease in maize was isolated.The morphological characteristics,pathogenicity test were studied.The results indicated that the colonies on PDA culture medium were white and later turned black.Mycelium was achmmatous or brown,branched and septate.Conidiophore was achromatous oval cell.Conidiogenous cell was enteroblastic-phialidie（eb-ph）.By analysing morphological character,cultural character and pathogenicity,the fungus should be Phyllosticta zeae.
出处
《西北农业学报》
CAS
CSCD
北大核心
2012年第12期53-56,共4页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家现代农业玉米产业体系兰州综合试验站(CARS-66)
甘肃省农业科技创新项目"主要农作物重大病虫害预测及防控技术研究
集成与示范推广"
关键词
玉米
叶斑病
玉米叶点霉
病原鉴定
Maize
Leaf spot disease
Phyllosticta zeae
Pathogen identification
