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染色体导入系,也称染色体片段代换系、回交重组自交系或近等基因系,是借助分子辅助选择方法,通过回交和自交,从供体中导入一个或几个小的染色体片段进入轮回亲本。相对于传统的遗传群体,导入系群体大大降低了供体材料的遗传背景的干扰,提高了QTL分析的灵敏度和准确性,是QTL鉴定、精细定位、互作分析、图位克隆、性状改良及杂种优势利用和基因表达分析的理想的实验材料。本文就染色体导入系的研究情况进行了详细的综述。
Chromosomal introduction, also known as chromosome segment substitution lines, backcross recombination inbred lines or near isogenic lines, is the introduction of one or a few small chromosomes from the donor by backcrossing and selfing using molecular assisted selection Fragment into the recurrent parent. Compared with the traditional genetic population, the introduced lines greatly reduced the genetic background of the donor material and improved the sensitivity and accuracy of the QTL analysis. QTL identification, fine mapping, interaction analysis, map cloning, trait improvement and The ideal experimental material for heterosis utilization and gene expression analysis. In this paper, the introduction of chromosome-based research conducted a detailed review.