甘肃渭源蒙古黄芪根腐病病原菌的分离与鉴定  

Isolation and identification of the pathogens causing Astragalus membranaceus var. mongholicus root rot in Weiyuan of Gansu Province

作　　者：陈垣[1] 朱蕾[1] 郭凤霞[2] 武志江[2] 

机构地区：[1]甘肃省干旱生境作物学重点实验室,甘肃农业大学,兰州730070 [2]甘肃农业大学生命科学技术学院,兰州730070

出　　处：《植物病理学报》2011年第4期428-431,共4页Acta Phytopathologica Sinica

基　　金：国家科技支撑计划(2007BAI37B03);甘肃农业大学甘肃省干旱生境作物学重点实验室开放基金(No.05)

摘　　要：黄芪是豆科黄芪属蒙古黄芪[Astragalus membranaceus（Fisch.）Bge.var.mongholicus（Bge.）Hsiao]或膜荚黄芪[A.membranceus（Fisch.）Bge.]的干燥根,主要成分有皂苷类、黄酮类、多糖及其它成分。具有补气固表、利尿托毒、排脓、敛疮生肌之功效。Root rot is one of the limitations of sustainable Astragalus membranaceus var.mongholicus production.Six kinds of fungi were isolated from diseased plant samples with root rot symptom in Weiyuan county of Gansu Province.Based on pathogenicity tests,the major pathogens were Fusarium oxysporum and F.solani,with the isolation percentage of 15.8%-38.1% and 25.0%-42.1% respectively at different growth stages.The incidence of root rot after inoculation of pathogens on goring seedling radicles was significantly higher than that on non-goring radicles.F.oxysporum was showed to have a strong pathogenicity.All the results indicated that the climate,soil condition and seedlings,healthy state were contributory factors for root rot disease.It is suggested that healthy plant seedlings without wound under the standard operation is important for controlling A.membranaceus var.mongholicus root rot.

关 键 词：黄芪根腐病 蒙古黄芪 病原菌 鉴定 分离 甘肃 膜荚黄芪 黄芪属 

分 类 号：S567[农业科学—中草药栽培]