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. 2018 Nov 21;9:1690. doi: 10.3389/fpls.2018.01690

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Copyright © 2018 Zhang, Liu, Li, Liu, Li, Fang, Zhang, Wang, Xu, Zhang, Song, Qi, Tian, Tian, Li and Ning.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Population structure based on 5375 SNPs distributed across 20 chromosomes. (A) Plot of ΔK calculated for K = 1–10. (B) Population structure (K = 2); the areas of the two colors (green and red) illustrate the proportion of each subgroup.