龙牙百合叶片褐斑病的病原鉴定  

Identification of Alternaria gaisen associated with leaf brown spot on Lilium brownii var.viridulum

作　　者：曾慧兰 黄翠翠 周义蒙 刘杰 李润根 ZENG Huilan;HUANG Cuicui;ZHOU Yimeng;LIU Jie;LI Rungen(Department of Horticulture,College of Life Science and Environmental Resource,Yichun University,Yichun 336000,China;Jiangxi Key Laboratory of Crop Growth and Regulation,Yichun University,Yichun 336000,China)

机构地区：[1]宜春学院生命科学与资源环境学院园艺系,宜春336000 [2]江西省作物生长发育与调控重点实验室,宜春336000

出　　处：《植物病理学报》2023年第5期974-980,共7页Acta Phytopathologica Sinica

基　　金：江西省科技厅重点研发项目(20161BBF60040);江西省教育厅科技计划项目(160132)。

摘　　要：龙牙百合(Lilium brownii var.viridulum Baker)为百合科百合属多年生植物,与宜兴百合(L.lan-cifolium Thunb.)、兰州百合(L.davidii var.unicolor)并称为“三大食用百合”[1]。随着龙牙百合种植规模的不断扩大,龙牙百合在生产和贮藏过程中病害发生频繁,百合产量和质量受到严重影响。引起龙牙百合病害的病原菌种类较多,近几年已报道的病原菌包括引起叶尖干枯病的高粱附球菌(Epicoccum sorghinum)[2]、鳞茎腐烂的假短孢弯孢(Curvularia pseudobrachyspora)[3]、组培苗腐烂的产核枝顶孢(Acremonium sclerotigenum)[4]、鳞茎炭疽病的白蜡树炭疽菌(Colletotrichum spaethianum)[5]、鳞茎枯萎的共享镰孢菌(Fusarium commune)[6]等。To confirm the leaf brown spot disease of Lilium brownii var.viridulum Baker,the diseased leaves were collected from the vegetable filed of Yichun University at Yichun city,Jiangxi province.A total of 20 fungal isolates,which consistently displayed Alternaria-like appearance,was obtained from the diseased leaf samples and the isolate HB3-1 was picked up as a representative for the further identification.Based on morphological characteristics,combined sequence dataset analysis of rDNA-ITS,TEF1,GAPDH,Alt al,RPB2 and pathogenicity test,the pathogenic isolate HB3-1 was identified as Alternaria gaisen Nagano ex Hara.This is the first report of the leaf brown spot disease caused by A.gaisen on L.brownii var.viridulum at domestic and abroad.

关 键 词：龙牙百合 百合科百合属 食用百合 病原菌种类 兰州百合 宜兴百合 病害发生 白蜡树 

分 类 号：S436.46[农业科学—农业昆虫与害虫防治]