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. 2022 Oct 31;15(12):2100–2112. doi: 10.1111/eva.13503

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© 2022 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd.

This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Population genetic structure of the native chicken in southwestern China. (a) Neighbor‐joining tree based on genome‐wide single‐nucleotide polymorphisms (SNPs) from four altitude groups. (b) Principal component analysis (PCA) of SNPs from chickens crossing gradient elevation areas. The plot is based on the first two PCAs. (c) Analysis of the genetic population structure of 188 Chinese native chickens was conducted using ADMIXTURE. The colors in each column represent the contribution from each subcluster (K = 2–8 when K = 6 has the lowest cross‐validation error). The chicken populations used included the Shannan (SN), Gongbujiangda (GB), Linzhi (LZ), Nixi (NX), Lijiang (LJ), Wuliangshan (WLS), Yimen (YM), Zhenyuan (ZY), Zhaotong (ZT), Chahua (CH), Banna game (BG) chicken, and Red jungle fowl (RJF).