紫花苜蓿QTL与全基因组选择研究进展及其应用  

Research progress in the quantitative trait loci(QTL)and genomic selection of alfalfa

作　　者：康俊梅[1] 张铁军[1] 王梦颖[1] 张怡[1] 杨青川[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所,北京100193

出　　处：《草业学报》2014年第6期304-312,共9页Acta Prataculturae Sinica

基　　金：国家科技支撑子课题(2011BAD17B01-01-3);国家现代牧草产业技术体系(CARS-35)资助

摘　　要：四倍体紫花苜蓿是重要的豆科牧草之一,由于其复杂的遗传背景与二倍体作物相比遗传作图与重要性状数量性状位点(quantitative trait locus,QTL)定位研究相对滞后。然而,二倍体苜蓿的相关研究起步较早,已经建立了高密度遗传图谱和物理图谱,这些研究为四倍体苜蓿遗传作图与QTL定位奠定了基础。随着第三代分子标记与测序技术的快速发展,极大地促进了四倍体苜蓿的高密度遗传图谱构建与QTL定位研究,并借助分子标记辅助育种技术对提高苜蓿选育效率,加速育种进程具有重要意义。本文对苜蓿遗传图谱构建与QTL定位研究及发展趋势进行了总结,并对苜蓿关联作图与全基因组选择的研究进展及应用前景加以概述,旨在为读者就相关研究领域有较全面的了解。Although tetraploid alfalfa is one of the most practically important forage legumes,its genetic mapping and the QTL identification of its significant traits are lagging behind other diploid crops due to its complex genetic background.High-density genetic and physical mapping of diploid alfalfa was initiated several years ago and these studies have laid the theoretical foundation for the genetic mapping and QTL identification of tetraploid alfalfa.This new work on tetraploid alfalfa will be greatly accelerated by the rapid development of third generation molecular markers and sequencing technology.On this basis it will be possible to increase the efficiency of alfalfa breeding programs,especially by using marker-assisted selection.This paper reviews the genetic map construction and QTL analysis of alfalfa.It outlines research progress and the prospects of association mapping and genomic selection in the future.

关 键 词：苜蓿 遗传连锁图谱 QTL 全基因组选择 分子标记辅助育种 

分 类 号：S541.9[农业科学—作物学]