摘要
以青海和甘肃省分布的8个藏系绵羊群体为对象，对其基因组DNA进行了RAPD分析。结果表明：群体内遗传多样性指数Ho值平均为0．37，总群体平均遗传多样性指数Hsp为1．51；藏系绵羊的遗传多样性75．5％分布在品种群间，24．5％分布在品种群内；品种内个体间的平均D值为0．0177（0．0152～0．0197）；品种群间的平均D值为0．0492（O．0419～O．0569）。现有藏系绵羊可划分为高原草地型（Altiplano Meadow Type，AMT）和山谷草地型（Valley Grassplot Type，VGT）两大类群。
The alalysis of random amplified polymorphic DNA （RAPD） were used to investigate the genetic diversity of eight breeds of Tibet sheep from Gansu and Qinghai province of northwest China. The results showed that ：The average genetic diversity index （Ho） within breeds was 0.37; The average diversity over all populations （Hsp） was 1.51. Portioning of genetic variability on average showed that, 24.5% distributed within and 75.5% between breeds. The average genetic distance index （D） was 0. 017 7（0. 015 2- 0. 019 7） within and 0. 049 2（0. 041 9-0. 056 9） between breeds of Tibet sheep. The breeds of Tibet sheep could be divided into Ahi piano Meadow Type （AMT） and Valley Grassplot Type （VGT）.
出处
《中国草食动物》
2006年第4期19-22,共4页
China Herbivores
关键词
遗传多样性
品种分化
藏系绵羊
RAPD
genetic diversity
random amplified polymorphic DNA
breeds differentiation
Tibet Sheep
