中文摘要：

用聚合链式反应（PCR）和直接测序的方法测定红腹锦鸡（Chrysolophus pictus）和白腹锦鸡（C．amherstiae）各5个样本线粒体DNA控制区的468bp的序列，共发现26个变异位点．红腹锦鸡的序列变异率为0．90％，白腹锦鸡的序列变异率是0．17％，两者差异极显著．红腹锦鸡和白腹锦鸡的3种碱基（A，T，c）含量差异显著．根据Kumar双参数法计算两种锦鸡的遗传距离为0．035±0．008，按线粒体DNA控制区的进化速率2％／Myr计算，它们的分歧进化的时间大约是（1．75±0．40）Myr，结果支持它们是两个独立的种．红腹锦鸡和白腹锦鸡可能分别起源于秦岭以南地区和横断山脉．

英文摘要：

This study used polymerase chain reaction and direct sequencing method to infer the taxonomic retationship between Golden Pheasant （ Chrysolophus pictus ） and Lady Amherst＇ s Pheasant （ C. amherstiae ）. A total of 468 nucleotides of the mitochondrial DNA control-region gene were sequenced. There are 26 variable positions, with 19 transi- tions, 6 tmnsversions and 1 deletion. The sequence variation was very significantly different between Golden Pheasant and Lady Amherst＇ s Pheasant. What＇ s more, the nucleotide composition of A, T and C were noted different between the two pheasants. Genetic distance between Golden Pheasant and Lady Amherst＇ s Pheasant was 0. 035 ± 0. 008 based on Kimura-2-parameter＇ s method. The divergence time between Golden Pheasant and Lady Amherst＇s Pheasant was （1.75 ± 0.40） Myr using the rate of 2% mtDNA sequence divergence/1Myr. This result suorted that Golden Pheasant and Lady Amherst＇ s Pheasant were two distinct species. The ancestors of Golden Pheasant and Lady Amherst＇ s Pheasant could have evolved allopatrically in the southern of Qinling Mountain and the Hengduan Mountain.