›› 2017, Vol. 44 ›› Issue (1): 173-179.doi: 10.16431/j.cnki.1671-7236.2017.01.024

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Genetic Diversity of Lueyang Black-bone Chicken Based on Mitochondrial DNA D-loop Region Sequence

YIN Ya-jun, DU Wei-li, WANG Ling, ZHANG Tao   

  1. School of Biological Sciences & Engineering, Shaanxi SCI-TECH University, Hanzhong 723000, China
  • Received:2016-06-12 Online:2017-01-20 Published:2017-01-19

Abstract:

This study was aimed to assess mitochondrial DNA D-loop sequence diversity and origin of Lueyang Black-bone chicken.The mtDNA D-loop sequence of 30 individuals from Lueyang Black-bone chicken were amplified by PCR and subsequently sequenced.The mtDNA D-loop sequence of other chicken were collected from GenBank and used as reference sequences to analyze the diversity and origin of Lueyang Black-bone chicken.The results revealed that the average values of base composition of A,C,G and T in mtDNA D-loop the sequence of Lueyang Black-bone chicken were 26.6%,26.6%,13.4% and 33.4%,respectively.26 nucleotide polymorphic sites were transition.The average nucleotide diversity (Pi) of the sites and haplotype diversity (Hd) were 0.00705 and 1.000,and the value of Tajima's D was -0.47272.Phylogenetic tree showed that samples were clusted in 4 clades. In the research, it could be concluded that the genetic diversity was relatively rich and wealthy and there were 4 maternal origins to Lueyang Black-bone chicken population.

Key words: Lueyang Black-bone chicken; mtDNA D-loop; genetic diversity

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