川麦冬炭疽病菌的潜伏侵染和越冬研究  

Studies on latent infection and overwintering of anthracnose pathogen in Ophiopogon japonicus in winter in Sichuan province

作　　者：蒋素蓉[1] 陈小红[1] 叶华智[1] 严吉明[1] 

机构地区：[1]四川农业大学植保系,四川雅安625014

出　　处：《中国植保导刊》2007年第3期5-7,共3页China Plant Protection

基　　金：四川省教育厅重点项目[2005A016]

摘　　要：从2004年12月至翌年3月,定期从田间麦冬采集有炭疽病症状和无炭疽病症的叶片,进行洗涤收集炭疽菌分生孢子,测定其存活力,并分离测定样本中是否有炭疽菌存在。结果表明,田间病叶上的分生孢子具有一定存活力,病叶病斑中的越冬病菌菌丝仍具有生活力;无症状样本中能分离到炭疽病菌。这表明川麦冬炭疽病菌具有潜伏侵染特性,能以田间病株上的分生孢子和病组织中的菌丝越冬,作为初侵染源。Anthracnose pathogen from Ophiopogon japonicus leaves in the field were collected and identified, its vitalities were tested periodically from Dec. 2004 to Mar. 2005 in Sichuan province. Anthracnose pathogens could be isolated from Ophiopogon japonicus leaves both with symptoms and without symptoms, and some isolated overwintering conidia could germinate. The results showed that anthracnose pathogen were latent, its conidia and mycelia could overwinter, then became primary infecting inoculums.

关 键 词：川麦冬 炭疽病 潜伏侵染 越冬 

分 类 号：S435.672[农业科学—农业昆虫与害虫防治]