Molecular marker related with cashmere fineness trait and detection primer and application of molecular marker related with cashmere fineness trait

The invention is suitable for the field of a biological technology, and provides a molecular marker related with cashmere fineness trait and a detection primer and application of the molecular markerrelated with cashmere fineness trait. The molecular marker comprises a G1355A site of a down-producing goat NFKBIA gene, wherein the nucleotide sequence of the G1355A site is shown as a sequence tableSEQID NO:1, and R in the nucleotide sequence of the G1355A site is A or G. The advantageous genes of the G1355A site for cashmere fineness, cashmere yield, cashmere length and net cashmere rate are AG genetype. Therefore, the AG genetype of the G1355A site can be used for breeding of fine-cashmere down-producing goats to improve the condition that the quality of the cashmere of the down-producinggoats of Liaoning province is poor. 本发明适用于生物技术领域，提供了一种与羊绒细度性状相关的分子标记及其检测引物和应用，该述分子标记包括绒山羊NFKBIA基因的G1355A位点；所述G1355A位点的核苷酸序列如序列表SEQ ID NO:1所示；所述G1355A位点的核苷酸序列中的R为A或G。所述G1355A位点在羊绒细度、产绒量、绒长和净绒率的优势基因型均为AG基因型。因此，G1355A位点的AG基因型可用于细