Here,the characters and detecting technology of SNP,as well as the status and foreground of the use of candidate gene SNP in chicken QTL mapping are introduced.

• 本文综述了单核苷酸多态性的性质及检测技术、利用候选基因SNP进行鸡QTL定位研究的现状,并对未来SNP的应用前景进行了展望。