谷子高异交结实雄性不育系的创制及应用  

Study on Innovation and Application of Highly-Male-Sterile Line with High Outcrossing Rate in Millet

作　　者：王玉文[1] 李会霞[1] 田岗[1] 史琴香[1] 

机构地区：[1]山西省农业科学院谷子研究所,山西长治046011

出　　处：《中国农业科学》2010年第4期680-689,共10页Scientia Agricultura Sinica

基　　金："十一五"国家科技支撑计划项目(2006BAD02B02);山西省自然科学基金项目(961030);山西省科技攻关项目(981007);山西省农社科攻关项目(041005-1)

摘　　要：【目的】选育高异交结实率的谷子高度雄性不育系、抗除草剂恢复系,配制优势杂交组合,"二系"配套,实现谷子的杂优化生产。【方法】对现有的不育系、恢复系进行杂交改良,系谱法选育符合目标的不育系和恢复系。【结果】选育出4个农艺性状好、异交结实率高的谷子高度雄性不育系高117、高146、高229、高236,选育出K103等具有较高配合力的抗除草剂恢复系,研究创建了完整的谷子"二系"杂交种选育技术体系,育成第一个适宜中国谷子中晚熟生态区种植的抗除草剂谷子杂交种长杂谷2号。【结论】高异交结实率谷子不育系的育成,解决了谷子杂交制种和不育系繁种难题,实现了谷子的杂优化生产。[Objective] Elite cross combinations were bred using highly-male-sterile line with high outcrossing rate and herbicide-resistant restorer line. By this, two-line system hybrid millet could be used in millet production. [Method] Improved existing male sterile lines and restorer lines which suited breeding aim were bred by pedigree method. [ Result] Four highly-male-sterile-lines with high outcrossing rate and fine agronomic traits named Gao117,Gao146,Gao229, and Gao236 were selected. Herbicide-resistant restorer lines with high combining ability like K103, etc.were bred. A set of technical system of breeding two-line system hybrid was found. The first millet hybrid named Changzagu No.2 with herbicide-resistance was bred which suits to late maturing area in China. [Conclusion] The puzzles about high-yielding reproduction of male sterile lines and high-yielding seed reproduction of hybrid were solved by having highly-male-sterile lines with high-outcrossing rate.

关 键 词：高度雄性不育系 异交结实率 抗除草剂 配合力 

分 类 号：S515[农业科学—作物学]