遗传 ›› 2001, Vol. 23 ›› Issue (6): 526-298.

• 论文 • 上一篇    下一篇

黄牛Ag-NOR染色体联合的类型和频率

陈宏1;徐廷生2;雷初朝1;雷雪芹2 CHEN Hong1;XU Ting-sheng2;LEI Chu-zhao1;LEI Xue-qin2   

  1. 1.西北农林科技大学畜牧兽医学院,陕西,杨凌,712100 2.洛阳农业高等专科学校,河南,洛阳,471003 1.College of Animal Science and Veterinary Medicine,Northwest Science and Technology University of Agriculture and Forestry,Yangling,Shaanxi 712100,China; 2.Luoyang Agricultural College,Luoyang,Henan,471003,China
  • 收稿日期:1900-01-01 出版日期:2001-12-10 发布日期:2001-12-10

Type and Frequency of Ag-NORs Combination of Cattle (Bos taurus ) Breeds in China

  • Received:1900-01-01 Online:2001-12-10 Published:2001-12-10

摘要: 用银染技术对中国4个黄牛品种(蒙古牛、秦川牛、岭南牛和西镇牛)40头牛的Ag-NOR联合的类型和频率进行了分析.结果表明,黄牛每个体细胞Ag-NOR联合可出现一个、两个或多个;蒙古牛、秦川牛、岭南牛和西镇牛Ag-NOR联合的频率分别为0.135、0.149、0.146和0.153.其中有一个联合的细胞占总的有联合细胞的比率分别为0.802、0.891、0.861和0.871.牛Ag-NOR联合的类型可分为链状联合,对称联合,环状联合和堆集联合4种,其中链状联合占60%~70%以上,对称联合占20%~30%.后两种占5%~10%.经分析表明,Ag-N(R联合的类型和频率可能具有种族特征,而不存在品种差异。
Abstract:The type and frequency of Ag-NORs combination of 40 individuals of four native cattle breeds(Mongolian,Qinchuan,Lingnan and Xizhen cattle)in China were analyzed by silver staining technique.The results showed that one,two or more Ag-NORs combinations appeared in metaphase cells of the cattle.The aerage freuency of Ag-NORs combination in each metaphase cell of Mongolian,Qinchuan,Lingnan and Xizhen cattle breeds was 0.135,0.149,0.146 and 0.153 respectively.Four types of Ag-NORs combination:cateniform with frquency 60%~70%,symmetry with 20%~30%,circularity and pile with 5%~10% were observed.The analysis showed that the type and frequency of Ag-NORs combination could perhaps be species characteristics and not breed characteristics.~

关键词: 频率
Key words,
Ag-NOR, 黄牛, 联合, 类型