Hospital Frédéric
INRA, UMR de Génétique Végétale, Ferme du Moulon, 91190 Gif-sur-Yvette, France.
Philos Trans R Soc Lond B Biol Sci. 2005 Jul 29;360(1459):1503-11. doi: 10.1098/rstb.2005.1670.
Backcrossing is a well-known and long established breeding scheme where a characteristic is introgressed from a donor parent into the genomic background of a recurrent parent. The various uses of backcrossing in modern genetics, particularly with the help of molecular markers, are reviewed here. Selection in backcross programmes is used to either improve the genetic value of plant and animal populations or fine map quantitative trait loci. Both cases are helpful in our understanding of the genetic bases of quantitative traits variation.
回交是一种广为人知且长期确立的育种方案,即把一个特征从供体亲本渗入到轮回亲本的基因组背景中。本文综述了回交在现代遗传学中的各种用途,特别是在分子标记帮助下的用途。回交育种计划中的选择用于提高动植物群体的遗传价值或精细定位数量性状基因座。这两种情况都有助于我们理解数量性状变异的遗传基础。