%A LI Xianglong, ZHANG Zengli, JIA Qing, WANG Lize, GONG Yuanfang, LIU Zhengzhu %T mtDNA D-loop of Chinese main indigenous sheep breeds using PCR-RFLP %0 Journal Article %D 2007 %J Front. Agric. China %J Frontiers of Agriculture in China %@ 1673-7334 %R 10.1007/s11703-007-0059-y %P 352-356 %V 1 %N 3 %U {https://journal.hep.com.cn/fag/EN/10.1007/s11703-007-0059-y %8 2007-09-05 %X The polymorphism of mitochondrial DNA (mtDNA) D-loop of 83 individuals from nine Chinese indigenous sheep breeds and two imported sheep breeds was studied with five endonucleases, Hinf I, Msp I, Sau3A I, Xsp I and Taq I, using PCR-RFLP. The results indicated that there existed two basic haplotypes in the region of mtDNA D-loop. It could be inferred that Chinese indigenous sheep breeds originated from two maternal ancestors. The average polymorphic degree (π value = 0.0421%) of mtDNA D-loop showed that the genetic diversity of mtDNA of Chinese indigenous sheep breeds was very low.