摘要
用银染技术对中国4个地方黄牛品种（蒙古牛、秦川牛、岭南牛和西镇牛）40头牛的Ag－NORs作了比较研究，并根据不同Ag—NORs的个体频率用数学方法估计了4个品种间的遗传距离，以此对4个品种作了聚类分析。结果表明，在4个品种中，西镇牛与岭南牛关系最近，西镇牛与蒙古牛关系最远。这与从Y染色体多态性、外形、历史、地理分布及生态类型的研究结果一致。
Ag-NORs of four local cattle breeds with tptal number of 40 cattles in China were studied comparatively by silver-staining technique. Genetic distance between the four breeds were estimated by the frequency of different Ag-NORs number with mathematical method. Classication analysis was made by the genetic distance between the four breeds. The results showed that there was a closer relationship between Xizhen and Lingnan breeds, a distant relationship between Xizhen and Mongolian breeds. The conclusion was supported by the findings in Y-chromosom polymorphism, visible appearance, history, geography and ecology.
出处
《黄牛杂志》
1994年第3期3-5,共3页
Journal of Yellow Cattle Science
关键词
银染核仁
组织区
遗传
黄牛
品种
Nucleolar organizer region(NOR)
Genetic distance
Cattle
