黑龙江省大豆根腐病菌锐顶镰孢鉴定  

Identification of Fusarium acuminatum causing soybean root rot in Heilongjiang Province

作　　者：支叶[1] 孙菲菲[1,2] 孙素丽[1] 段灿星[1] 朱振东[1] 

机构地区：[1]中国农业科学院作物科学研究所,农作物基因资源与基因改良国家重大科学工程,农业部北京大豆生物学重点实验室,北京100081 [2]河南农业大学植物保护学院,河南郑州450002

出　　处：《中国油料作物学报》2014年第6期789-793,共5页Chinese Journal of Oil Crop Sciences

基　　金：农业部作物种质资源保护子项目(NB2012-2130135-25-15)

摘　　要：2012年从黑龙江省采集的大豆根腐病病株上分离到5个疑似锐顶镰孢的分离物,基于形态学、EF-1α基因序列及锐顶镰孢特异性分子标记检测,将5个分离物鉴定为锐顶镰孢(Fusarium acuminatum)。接种试验表明,5个分离物对大豆品种Williams和合丰25具有较强的致病力,分离物间不存在致病力差异。这是首次报道在黑龙江省发现锐顶镰孢引起大豆根腐病。Five Fusarium isolates like - as Fusarium acuminatum were isolated from diseased soybean plants with root rot symptoms collected from Heilongjiang Province in 2012. Based on morphology, EF -1α gene sequencing and detection of F. acuminatum specific markers, these Fusarium isolates were identified as F. acuminatum. Pathogencity of these 5 isolates on soybean was tested by inoculating cultivars Williams and Hefeng 25 at seedlings, all isolates were strong pathogenic and no pathogenic difference was found among the isolates. To our knowledge, this is the first report of F. acuminatum as a pathogen on soybean in Heilongjiang Province.

关 键 词：大豆 根腐病 锐顶镰孢 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]