Abstract
In this study, we investigated the genetic diversity and phylogenetic relationship of six duck populations by employing the genetic polymorphisms of 20 microsatellites. The parameters used in this study included number of alleles, average effective numbers of alleles (E) and average rates of heterozygosity of each population. The results showed that all the microsatellite loci were highly polymorphic except that the locus AJ515896 in Muscovy duck was 0. The average PIC (0.762), average h (0.7843) and average E (5.261) of the six duck populations were all high, indicating that the gene polymorphisms and genetic diversity were high. The test of Hardy-Weinberg equilibrium showed that the six populations in this study were all in Hardy-Weinberg disequilibrium. The F-statistic analysis results showed the range of F ST was from 0.0205 (AJ515895) to 0.2558 (AJ515896). The mean F ST was 0.0936. Phylogenetic study revealed that Peking duck (Zl and Z4), Shaoxing duck, Cherry Valley duck and Aobaixing duck were clustered in one group, while the Muscovy duck was clustered in one group alone. The phylogenetic relationships among different populations were in accordance with their breeding history and distribution. Our data suggested that the 20 microsatellite loci were effective markers for analysis of genetic relationships among duck populations.
Highlights
In this study, we investigated the genetic diversity and phylogenetic relationship of six duck populations by employing the genetic polymorphisms of 20 microsatellites
There have been many deemed to be one of the most valuable genetic markers reports using microsatellites to study the genetic diversity (Aranguren-Méndez et al, 2002; Wang et al, 2004). In this of chickens (Romanov and Weigend, 2001; Chen et al, paper, we investigated the genetic diversity of six duck 2003; Wu et al, 2004; Chen et al, 2004; Osman et al, 2005; populations (Peking duck (Z1 and Z4), Muscovy duck, Kong et al, 2006; Osman et al, 2006; Liu et al, 2006; Shaoxing duck, Cherry Valley duck and Aobaixing duck)
Genetic diversity among loci and populations In this study, we investigated the genetic diversity and phylogenetic relationships of six duck populations in China
Summary
In Microsatellites are characterized by a core sequence that past decades, China has imported foreign ducks and used consists of a number of tandemly repeated units with a them to improve native duck performance. This resulted in length of 1-6 base pairs. There have been many deemed to be one of the most valuable genetic markers reports using microsatellites to study the genetic diversity (Aranguren-Méndez et al, 2002; Wang et al, 2004) Al. (2001), Zuo et al (2004) and Yan et al (2005) analyzed the genetic diversity of some populations using random
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