获得小麦群体高产的单株选择性状研究  

The Selection Criteria of Single Plant Traits for Wheat High Farmland Yield

作　　者：孙道杰[1] 王辉[1] 闵东红[1] 李学军[1] 冯毅[1] 

机构地区：[1]西北农林科技大学农学院,陕西杨凌712100

出　　处：《中国农学通报》2005年第5期181-183,共3页Chinese Agricultural Science Bulletin

基　　金：国家863计划重大专项"小麦分子育种技术研究与优质双抗新品种的选育"(2003AA207090);948项目"优质抗病小麦种质的引进;评价;改良与创新"(2003-Q01);陕西省攻关项目"小麦高产优质多抗新品种选育及标准栽培技术示范"(2002K-G1)资助。

摘　　要：小麦产量的获得依靠群体生产来实现,而品种选育的早期世代考察的对象是单株,因而存在单株选择和群体生产之间的矛盾。早期世代是品种选育的关键时期,研究单株性状与群体产量之间的关系非常重要。针对多穗、中穗和大穗三种类型进行研究,结果表明:对于多穗型,单株穗数、单株千粒重与群体产量相关显著;对于中穗型和大穗型,单株主茎穗重、单株千粒重与群体产量相关显著。对大穗型单株穗数的选择也不应忽视。The grain yield comes from wheat colony. In early generation of wheat breeding the traits of single plant be evaluated. So the Coefficients of correlation between analysed traits of single plant and farmland yield had been researched in this paper. The farmland yield was related to the number of heads per plant and 1000-kernel weight per plant, the correlation coefficients are significant in small spike type. So were the farmland yield to the grain weight of the longest spike and 1000-kerkel weight per plant in medium spike type and big spike type. It is important to select number of heads per plant in big spike type breeding.

关 键 词：单株选择 性状研究 体高 群体产量 早期世代 品种选育 小麦产量 关键时期 单株性状 千粒重 大穗型 多穗型 穗数 相关 穗重 主茎 

分 类 号：S562[农业科学—作物学] TU435[建筑科学—岩土工程]