| 吴 宽，牛永浩，康克功，赵 磊，吴云锋.华山新麦草易位系抗黄矮病的鉴定[J].麦类作物学报,2019,(7):783 |
| 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 |
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| DOI：10.7606/j.issn.1009-1041.2019.07.04 |
| 中文关键词: 华山新麦草易位系 小麦黄矮病 田间接种 抗性鉴定 堆测法 |
| 英文关键词:P.huashanica translocation lines Wheat yellow dwarf disease Field inoculation Resistance identification Hill plot technique |
| 基金项目: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） |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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