不同青贮玉米品种抗病性评价  

Evaluation of disease resistance of different varieties of silage maize

作　　者：刘勇[1] 周俗[1] 刘丽[1] 陈莉敏[1] 张玉[1] 刘刚[1] 道里刚[1] 肖冰雪[1] 史长光[1] 李远忠 李世洪 LIU Yong;ZHOU Su;LIU Li;CHEN Li-min;ZHANG Yu;LIU gang;DAO Li-gang;XIAO Bing-xue;SHI Chang-guang;LI Yuan-zhong;LI Shi-hong(Sichuan Academy of Grassland Sciences,Chengdu 611731,China;Agriculture and animal husbandrybureau in Hongya county,Meishan 620300,China)

机构地区：[1]四川省草原科学研究院,四川成都611731 [2]四川省眉山市洪雅县农业和畜牧局,四川眉山620300

出　　处：《草原与草坪》2019年第2期91-95,共5页Grassland and Turf

基　　金：国家现代农业产业技术体系(CARS-34)-四川饲草创新团队病虫草害岗位资助;四川省科技支撑计划项目-四川主推栽培牧草病害发生机理和综合防控技术研究与示范(2016NZ0038);四川省应用基础研究项目-四川饲用玉米锈病空间分布及流行规律研究(2017JY0292)资助

摘　　要：对10个青贮玉米品种自然发病情况进行调查,并采用病级分类方法对抗病性分类。结果表明:对锈病表现抗性和中抗的品种有3个和5个,分别占供试品种的30%和50%;对大斑病表现抗性和中抗的品种有4个和5个,分别占供试品种的40%和50%;对褐斑病表现抗性和中抗的品种有6个和3个,分别占供试品种的60%和30%;对小斑病表现抗性和中抗的品种有6个和3个,分别占供试品种的60%和30%。多数品种对青贮玉米4种病害抗性表现较好,可从青贮玉米供试材料中选用优良抗病材料用于四川地区种植。In this paper,we evaluated the disease resistance by the disease classification and systematic cluster analysis through investigating the natural incidence of 10 species of silage maize.The results showed that 3 and 5 varieties having resistance to rust,which accounted for 30% and 50% of the tested varieties respectively.There were 4 and 5 varieties which have resistance and moderate resistance to large leaf spot,occupying 40% and 50% in the tested varieties respectively.There were 6 and 3 varieties having resistance and moderate resistance to brown spot,accounting for 60% and 30% of the tested varieties respectively.There were 6 and 3 varieties with resistance and medium resistance to small leaf spot,accounting for 60% and 30% of the tested varieties respectively.Most species of silage maize have a sound resistance to four kinds of diseases,so we can choose excellent disease-resisted materials from the experimental materials of silage maize to be planted in Sichuan area.Also,we can choose the varieties which was sensitive or highly resistant to diseases from the experimental materials of silage maize to be used for researching disease resistance mechanism of silage maize.

关 键 词：青贮玉米 抗病性 锈病 叶斑病 

分 类 号：S548[农业科学—作物学]