一株引起宜昌华重楼茎腐病的病原鉴定  

Pathogen identification of stem rot on Paris polyphylla Smith var.chinensis(Franch.)Hara in Yichang

作　　者：徐兰婷 黄景麟 王景旭 黄直俊 杨正容 贾切 王鹏程[3] XU Lan-ting;HUANG Jing-lin;WANG Jing-xu;HUANG Zhi-jun;YANG Zheng-rong;JIA Qie;WANG Peng-cheng(College of Horticulture and Gardening,Yangtze University,Jingzhou 434025,Hubei,China;Three Gorges Public Inspection and Testing Center,Yichang 443000,Hubei,China;Hubei Three Gorges Polytechnic,Yichang 443000,Hubei,China;Changleping Town Agricultural Service Center,Wufeng 443400,Hubei,China;Wufeng County Agricultural and Rural Bureau,Wufeng 443400,Hubei,China)

机构地区：[1]长江大学园艺园林学院,湖北荆州434025 [2]三峡公共检验检测中心,湖北宜昌443000 [3]湖北三峡职业技术学院,湖北宜昌443000 [4]五峰县长乐坪镇农业服务中心,湖北五峰443400 [5]五峰县农业农村局,湖北五峰443400

出　　处：《湖北农业科学》2025年第2期94-98,共5页Hubei Agricultural Sciences

基　　金：宜昌市科学技术研究与开发项目(A21-4-016)。

摘　　要：为有效控制湖北省宜昌市华重楼[Paris polyphylla Smith var. chinensis(Franch.)Hara]茎腐病的发生,对该病害的病原菌进行了分离鉴定。采用常规组织分离法,获得1株导致华重楼茎部腐烂的白色丝状真菌菌株,并将其命名为CLY-2。通过显微形态观察,CLY-2的大型分生孢子呈柱状,具隔膜,大小为(22.0~33.0)μm×(3.1~4.4)μm;小型分生孢子肾形或卵形,单胞,单生或串生,大小为(2.5~8.2)μm×(1.2~3.5)μm。结合rDNA-ITS序列系统进化分析,最终将CLY-2确定为镰刀菌属真菌Fusarium foetens。In order to effectively control the rot on the stem of Paris polyphylla Smith var.chinensis(Franch.)Hara in Yichang City,Hubei Province,the pathogen of the disease was isolated and identified.Using conventional tissue isolation methods,a white filamen⁃tous fungal strain causing stem rot on Paris polyphylla Smith var.chinensis(Franch.)Hara was isolated and named CLY-2.Through microscopic observation,the large conidia of CLY-2 strain were columnar with septa,and the size was(22.0~33.0)μm×(3.1~4.4)μm.The small conidia were kidney shaped or oval-shaped,single-celled,solitary or tandem,with a size of(2.5~8.2)μm×(1.2~3.5)μm.Based on the rDNA-ITS sequence phylogenetic analysis,CLY-2 strain was ultimately identified as Fusarium foetens,a fun⁃gus belonging to the genus Fusarium.

关 键 词：华重楼[Paris polyphylla Smith var.chinensis(Franch.)Hara] 茎腐病 镰刀菌属 病原鉴定 湖北省宜昌市 

分 类 号：S435.672[农业科学—农业昆虫与害虫防治]