华山新麦草易位系抗黄矮病的鉴定  

Evaluation of Psathyrostachys huashanica Translocation Lines Resistance to Barley Yellow Dwarf Disease

作　　者：吴宽 牛永浩 康克功[1] 赵磊[2] 吴云锋[2] WU Kuan;NIU Yonghao;KANG Kegong;ZHAO Lei;WU Yunfeng(Department of Biological Engineering,Yangling Technical and Vocational College,Yangling,Shaanxi 712100,China;College of Plant Protection,Northwest A&F University,Yangling,Shaanxi 712100,China)

机构地区：[1]杨凌职业技术学院生物工程分院,陕西杨凌712100 [2]西北农林科技大学植保学院,陕西杨凌712100

出　　处：《麦类作物学报》2019年第7期783-786,共4页Journal of Triticeae Crops

基　　金：陕西省教育厅专项科研计划项目;杨凌职业技术学院科学研究基金计划项目(A2017028)

摘　　要：小麦黄矮病在田间由麦蚜传播大麦黄矮病毒(BYDV)感染引起。为给优质抗BYDV小麦新品种提供重要种质资源,采用堆测法种植材料,利用饲毒蚜虫接种病毒BYDV-GAV的方式,对27份华山新麦草易位系材料进行了抗病性鉴定,比较了接种病毒后各材料的病情指数及其千粒重。结果表明,27份华山新麦草易位系中,5份材料的病情指数介于13.56~18.89,表现为抗BYDV-GAV;9份材料的病情指数是介于27.78~48.89,表现为感BYDV-GAV;其余13份材料的病情指数均大于50.0,表现高感BYDV-GAV。不同华山新麦草易位系对BYDV-GAV抗性差异较大,筛选出的5份抗黄矮病材料可为培育优质抗病毒新品种提供重要种质资源。Yellow dwarfis is caused by wheat aphid transmission of viruses(BYDV).With hill plot technique to sow wheat later,resistance identifications of 27 P.huashanica translocation lines is to BYDV-GAV were conducted by inoculation of viruliferous aphids in the field.The results showed that the disease index of 5 P.huashanica translocation lines existed in the range of 13.56-18.89,indicating them better resistance to infection of BYDV-GAV.Additionally,9 lines of them with disease index between 27.78 and 48.89,were susceptible to infection of BYDV-GAV.Other 13 lines with disease index over 50.0,lines highly susceptible to yellow dwarf virus.Identification of disease resistance revealed that the translocation lines of P.huashanica contained disease-resistant,disease-susceptible and highly susceptible types,and 5 lines from which had been screened may provide important germplasm resources for high-quality antiviral variety breeding.

关 键 词：华山新麦草易位系 小麦黄矮病 田间接种 抗性鉴定 堆测法 

分 类 号：S512.1[农业科学—作物学] S330