内蒙古莫旗黄芪根腐病病原的分离与鉴定  

Isolation and Identification of Root Rot Pathogen of Astragalus Membranaceus in Moqi, Inner Mongolia

作　　者：周默 白庆荣[1] ZHOU Mo;BAI Qingrong(College of Agriculture,Jilin Agricultural University,Changchun 130118,China)

机构地区：[1]吉林农业大学农学院,长春130118

出　　处：《东北农业科学》2021年第2期52-55,61,共5页Journal of Northeast Agricultural Sciences

基　　金：国家自然科学基金项目(31500022)。

摘　　要：黄芪在内蒙古莫旗地区大量种植,其根腐病是影响黄芪产量的病害之一,本研究以该地区的黄芪根腐病材料为研究对象,对患病植株进行病害症状的描述、组织分离和致病性测定,并通过培养特征、显微形态特征及分子生物学技术,获得黄芪根腐病的4个致病菌,确定菌株LD1为尖孢镰刀菌(Fusarium oxysporum),LD2为腐皮镰刀菌(F. solani),LD3为锐顶镰刀菌(F. acuminatum),LD4为木贼镰刀菌(F. equisetim)。其中LD4引起黄芪根腐病为首次报道。Astragalus membranaceusis planted in large quantities in Moqi area of Inner Mongolia. Root rot is one of the diseases affecting the yield of A. membranaceus. In this study, the root rot of A. membranaceus in this area was used as the research object. The symptoms of the disease, tissue isolation and pathogenicity of the diseased plants were described. Four pathogens of root rot of A. membranaceus were obtained by culture characteristics, micromorphological characteristics and molecular biological techniques. The isolates LD1 were identified as Fusarium oxysporum, LD2 as F. solani, LD3 as F. acuminatum, LD4 as F. equisetim. It was first reported that LD4 caused root rot of A. membranaceus.

关 键 词：黄芪根腐病 显微形态学 致病菌 

分 类 号：S435.672[农业科学—农业昆虫与害虫防治]