Genetic diversity and population structure of 10 Chinese indigenous egg-type duck breeds assessed by microsatellite polymorphism

Journal of genetics

Xu Wen-Juan¹  Shu Jing-Ting¹  Han Wei¹  Song Wei-Tao¹  Li Hui-Fang1¹  Zhu Wen-Qi¹  Chen Kuan-Wei¹ 

[1] Institute of Poultry Science, Chinese Academy of Agricultural Science, Yangzhou 225003, People’s Republic of China$$

关键词: microsatellite;    egg-type duck;    genetic differentiation;    genetic structure.;   

DOI  :  

学科分类：生物科学（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The genetic structure and diversity of 10 Chinese indigenous egg-type duck breeds were investigated using 29 microsatellite markers. The total number of animals examined were 569, on average 57 animals per breed were selected. The microsatellite marker set analysed provided 177 alleles (mean 6.1 alleles per locus, ranging from 3 to 10). All populations showed high levels of heterozygosity with the lowest estimate of 0.539 for the Jinding ducks, and the highest 0.609 observed for Jingjiang partridge ducks. The global heterozygote deficit across all populations ($F_{ext{IT}}$) amounted to $-0.363$. About 10% of the total genetic variability originated from differences among breeds, with all loci contributing significantly. An unrooted consensus tree was constructed using the NeighborNet tree based on the Reynold’s genetic distance. The structure software was used to assess genetic clustering of these egg-type duck breeds. Clustering analysis provided an accurate representation of the current genetic relations among the breeds. An integrated analysis was undertaken to obtain information on the population dynamics in Chinese indigenous egg-type duck breeds, and to better determine the conservation priorities.

【 授权许可】

Unknown