松辽黑猪染色体组型及显带的研究

Study on Karyotype and Banding Patterns of the Songliao Black Pig

采用外周血淋巴细胞培养方法以及C-显带和G-显带技术,对松辽黑猪进行了染色体组型分析及显带研究,并分析了各号染色体的相对长度、着丝点指数及臂比。结果表明,松辽黑猪的染色体数目为2n=38,公猪为3:8,XY;母猪为3:8,XX。松辽黑猪的C-带具有多态性,G-带带型与其他家猪相比没有明显差异。

Tbe karyotype and banding patterns ofthe Songliao Black Pig were studied by method of peripheral blood lymphocytes culture and the techniques of G-, C-banding. The relative length, centromere index and arm ratio of each individual chromosome were analyzed. The results showed as follows： The diploid chromosome number of Songliao black swine were 2n=38, the karyotype of male was 2n=38, XY; while the female were 2n=38, XX. The C-banding were polymorphism, and the G-banding had no visible distinction than others.