不同玉米品种对瘤黑粉病抗性的初步鉴定  

Primary identification of resistance in different maize varieties to Ustilago maydis

作　　者：严理[1] 李智敏[1] 陈佳[1] 高春生[1] 余永廷[1] 严准[1] YAN Li;LI Zhimin;CHEN Jia;GAO Chunsheng;YU Yongting;YAN Zhun(Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, China)

机构地区：[1]中国农业科学院麻类研究所,湖南长沙410205

出　　处：《湖南农业大学学报（自然科学版）》2017年第1期42-46,共5页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：中国农业科学院科技创新工程项目(CAAS–ASTIP–IBFC09);湖南省重点研发计划(2016WK2030);国家农业部项目(S158)

摘　　要：选择22个玉米品种,在苗期采用注射法人工接种玉米黑粉菌,对玉米瘤黑粉病发病时间、发病率、病情指数进行统计分析,以鉴定玉米品种对瘤黑粉病的抗病性。结果表明:接种8 d后,玉米品种陆续开始发病,第13天进入发病增速期,第16天达到发病高峰期,第18天后病情基本稳定;玉米品种间对瘤黑粉病的抗性存在差异,其中LD901、太平洋891表现为高抗,京科665、金糯628表现为中抗,耐斯1号、京单38、南美1号等12个品种表现为抗病,糯2000、太平洋98、Golden Bautam、中彩甜糯8号、15H–09、绿色先锋F1表现为感病。Maise seedlings from22of maise varieties were inoculated with Ustilago maydis by artificial injection,anddisease resistance of these maise varieties were evaluated by onset of symptom,incidence rate and disease index.Theresults showed that the infection symptom was first observed at eight days post inoculation(dpi),the diseased maize ofall varieties developed quickly since13dpi and become outbreak until16dpi and disease status become stable from18dpi.Disease resistance was different among maize varieties:varieties LD901and TPY891showed to be high resistant,varieties JK665and JN628showed to be middle resistant and12varieties of maize,such as NS1,JD38and NM1showedresistant to Ustilago maydis while varieties N2000,TPY98,Golden Bautam,ZCTN8,15H–09and LSXF F1showed tobe susceptible to Ustilago maydis.

关 键 词：玉米 瘤黑粉病 抗病性 

分 类 号：S435.131.41[农业科学—农业昆虫与害虫防治]