一种由麦根腐平脐蠕孢(Bipolaris sorokiniana)引起的柳枝稷叶斑病  

A leaf spot disease of switchgrass caused by Bipolaris sorokiniana

作　　者：马甲强 袁庆华[1] 王瑜[1] 苗丽宏[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所,北京100193 [2]甘肃农业大学草业学院,兰州730070

出　　处：《植物病理学报》2016年第4期569-572,共4页Acta Phytopathologica Sinica

基　　金：公益性行业(农业)科研专项(201303057);"十二五"国家科技支撑计划项目(2011BAD17B01)

摘　　要：柳枝稷（Panicumvirgatum）属禾本科（Gramineae）黍属（Panicum）是多年生C4草本植物。该植物原产于北美，环境适应性极强，具有耐旱、耐盐碱、耐贫瘠等特点。它不仅是国际上公认的作为生物燃料的能源作物，还是一种优质牧草。In 2014, switchgrass leaf spot was found on switchgrass in Shandong, China. In order to clear switchgrass leaf spot pathogen and it＇s taxonomic status, the pathogen was identified by morphology and molecular biology identification. According to the characteristics of conidia, conidiophores and conidia germination, it was identified as Bipolaris sorokiniana. Conidia were mostly straight, oblong, ovate, and olive-brown with 3 to 9 septa, it＇s two ends germinate, the dimensions were （13.5-25.5）μm× （21-78.5）μm. Conidiophores were single, sympodial, straight or geniculate, gray to brown, multiseptate, with 2 to 8 septa, Conidiophores were （45-112）μm× （6-8） μm. Sequence analysis of the rDNA-ITS region showed that the identity had 100% homology with Bipolaris sorokiniana in GenBank. The first report of leaf spot caused by Bipolaris sorokiniana on switchgrass in China.

关 键 词：柳枝稷 叶斑病 根腐 草本植物 环境适应性 能源作物 生物燃料 优质牧草 

分 类 号：S543.9[农业科学—作物学]