大白菜细菌性叶斑病病原菌鉴定及其寄主范围的测定  

IDENTIFICATION OF A BACTERIAL PATHOGEN OF LEAF SPOT ON BRASSICA PEKINENSIS AND ITS HOST RANGE

作　　者：孙福在[1] 朱红[1] 李林强 张永祥[1] 何礼远[1] 

机构地区：[1]中国农科院植物保护研究所

出　　处：《植物病理学报》1993年第2期131-136,共6页Acta Phytopathologica Sinica

基　　金：内蒙科委"大白菜新病害综合防治研究"攻关项目

摘　　要：1988年秋,在北京和内蒙的大白菜上发生一种叶斑病,难以确诊何种病害,从其病叶分离到10个菌株,做了致病性测定,革兰氏染色、菌体形态、培养性状、生理生化反应,DNA的G+C含量测定及血清学反应鉴定,结果证明,这10个菌株均属菊苣假单胞菌Pseudomonas cichorii(Swingle)Stapp 1928。该病菌国内无发生记载,对大白菜危害国内外未曾有过报导,称之大白菜细菌性叶斑病。经人工喷雾接种结果表明,该病菌除危害大白菜和油菜外,还能不同程度地侵染甘蓝、菜花、番茄、青椒、芹菜、莴笋、芥菜、萝卜、黄瓜和菜豆,但不能侵染甜菜。10 isolates obtained from diseased leaves of Chinese cabbage(Brassicapekinensis Rupr)were examined for their pathogenicity,Gram stain,morpholo- gical,cultural,biochemical,serological characteristics and DNA G+C mol%.The results demonstrated that all isolates belonged to Pseudomonas cichorii(Swing1925)Stapp 1928. This disease has not yet been reported in China,but spreaded in Eeijingand inner Mongolia since 1988 and was named bacterial leaf spot of Chinesecabbage.The inoculation test showed that the pathogen could infect cabbage,cauliflower,tomato,chilli,celery,asparagus,lettuce,mustard,radish,cucumberand Lean besides Chinese cabbage and rape,but could not infect beet.

关 键 词：大白菜 细菌性叶斑病 病原菌 鉴定 

分 类 号：S436.341[农业科学—农业昆虫与害虫防治]