牦牛远缘杂交后代减数分裂与雄性不育关系的研究  

Relationship between Meiosis and Male Sterility of Yak Outbreeding Progeny

作　　者：周继平[1] 张周平[1] 胡勇[1] 仇桂芳[1] 

机构地区：[1]青海省畜牧兽医科学院,青海西宁810003

出　　处：《黄牛杂志》1999年第5期12-15,共4页Journal of Yellow Cattle Science

基　　金：国家自然科学基金

摘　　要：采用改进的界面铺展———硝酸银染色技术，对公犏牛及公尕里巴牛的减数分裂及联会复合体进行观察，发现Ｆ１ 、Ｆ２ 代杂种公牛的部分精母细胞能够完成减数分裂的全过程，直至出现精子。但是，Ｆ２ 代减数分裂和精子发生状况较Ｆ１ 代有所改善。杂交后代个体间的可育程度存在差异。有一头Ｆ３The meiosis and synaptonemal complex of male pian niu and male Galiba cattle were observed Using modified layer spreading and Ag-NOR staining method. The results indicated that some of the spermatocytes of F 1 and F 2 crossbreds could complete the whole process of meiosis and produce normal sperm. however, the meiosis and spermatogenesis of F 2 were improved compared with F 1. The difference in fertility of individual crossbreds was noticed. A F 3 bull showed nearly normal function of spermatogenesis.

关 键 词：公犏牛 尕里巴牛 减数分裂 雄性不育 

分 类 号：S823.85[农业科学—畜牧学] S823.2[农业科学—畜牧兽医]