干旱地区农业研究Issue(5)：33-39,7.
远缘杂交后代转育的小麦抗源材料抗病及抗旱性研究
Disease resistance and drought tolerance of wheat resistant sources derived from wide hybridization
摘要
Abstract
Twenty wheat advanced lines with stable disease resistance and agronomic traits were obtained by crossing and backcrossing between Zhengmai 9023 and Yumai 66 and the stable distant hybridization from wide hybridization of wild emmer and wild oats,respectively,after screening and identification seven times .wheat advanced lines were evalu-ated for the presence resistance in a field with two types of disease nursery respectively:one is artificial nursery inoculat-ed with two prevalent races (CYR32 and CYR33)in Yangling,Shaanxi Province;the other is a natural infection of Pst in Tianshui,Gansu Province .Meanwhile,the seedlings of the cultivars were inoculated with the four races CYR32, CYR33,CYR3 1 and CH42 in the greenhouse,respectively .The resistance genes were postulated using molecular mark-ers for Yr5,Yr9,Yr10,Yr15,Yr17,Yr18 and Yr26 in combination with resistance spectra.Germination drought stress experiment of wheat advanced lines was used to evaluate its drought resistance .The agronomic traits were investi-gated and evaluated .The results of disease resistance,drought resistance and agronomic characteristics showed that:Zhengye-2,Zhengye-3,Zhengye-6,Yuye-1,Yuye-2,Yuye-4,Yuye-5,Yuye-6 were the 8 of 20 wheat advanced lines in the experiment with good disease resistance,drought resistance and comprehensive characters,and could be used as parent resistance material .The results suggest that under the guidance of good disease resistance, drought tolerance and synthetical properties breeding goal,Zhengmai 9023 and Yumai 66 were used as gene accumulation capacity,combining pedigree selection method with molecular markers to assist selection breeding,in order to improve and innovate variety Zhengmai 9023 and Yumai 66 .关键词
小麦/远缘杂交/抗源转育/抗条锈性/抗旱性/农艺性状Key words
wheat/wide hybridization/incorporation of resistance into cultivar/resistance to stripe rust/drought tolerance/agronomic traits分类
农业科技引用本文复制引用
许鑫,袁凤平,穆京妹,薛文波,王琪琳,吴建辉,黄丽丽,康振生,韩德俊..远缘杂交后代转育的小麦抗源材料抗病及抗旱性研究[J].干旱地区农业研究,2014,(5):33-39,7.基金项目
国家基础研究“973”计划（2013CB127700）；国家小麦产业技术体系（CARS-3-1-11）；自然基金（31371924）；高等学校学科创新引智计划资助项目 （）
