甘肃省番茄早疫病菌致病力测定及品种田间抗病性鉴定  

Pathogenicity determination and species identification of field disease resistance against tomato early blight (Alternaria solani) in Gansu Province

作　　者：张振粉[1] 杨成德[1] 陈秀蓉[1] 屈星[2] 张俊忠[1] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]甘肃农业大学农学院,甘肃兰州730070

出　　处：《甘肃农业大学学报》2010年第6期114-117,122,共5页Journal of Gansu Agricultural University

基　　金：甘肃省科技厅项目(5HS054-A91-092-02);甘肃省农业综合开发办公室项目

摘　　要：从甘肃省河西番茄产区采集了36份番茄早疫病样品,共分离得到7个番茄早疫病分离物.经致病性测定,A1、A3、B和D4个分离物均可致病,且这4个分离物致病菌的分生孢子形态均为倒棍棒形,暗褐色,单生于分生孢子梗顶端,具纵隔膜0～5个,横膈膜5～12个,大小为(67～150.5)μm×(15.5～28.5)μm,喙长为(68.5～180.5)μm×(3.0～4.5)μm,根据其形态学特征鉴定为茄链格孢Alternaria solani(Ell&Mart) Sorauer.对39个供试品种(系)的田间抗病性鉴定结果表明:抗病品种(系)7个,.感病品种(系)30个,高抗品种(系)2个,感病材料占所有鉴定品种(系)的82.1%,抗病材料仅占17.9%.In this study,seven isolated-germs of tomato early blight were isolated from 36 specimens,which were collected from four production regions in Gansu Province.Pathogenicity test indicated A1,A3,B and D had pathogenic,and the conidia of pathogens more or less uniform in patterns,inverted club-shaped and dark brown,formed singly.Every conidia possessed 0~5 vertical diaphragm （s） and 5~12 diaphragms.The size and the beak length of conidia were ranged by （67~150.5）μm ×（15.5~28.5）μm and （68.5~180.5）μm×（3.0 ~ 4.5）μm respectively.Based on the pathogenic morphology of tomato early blight,the pathogen was identified as Alternaria solani （EllMart） Sorauer.The disease-resistance identification was conducted on 39 tested varieties （lines）.The results showed that there were 7 resistant varieties （lines） included ＇improved Shi Hong 206＇ and ＇3144＇,30 susceptible varieties （lines） included ＇3379＇ and 2 high-susceptible varieties （lines）-＇high lycopene＇ and ＇D-1＇.Overall,the proportion of the susceptible materials was 82.1 %,and the proportion of susceptible materials was 17.9 %.

关 键 词：番茄早疫病 致病力 抗病性鉴定 茄链格孢 

分 类 号：S436.421.1[农业科学—农业昆虫与害虫防治]