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. 2018 Jun 6;9:767. doi: 10.3389/fpls.2018.00767

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Copyright © 2018 Soltani, MafiMoghaddam, Oladzad-Abbasabadi, Walter, Kearns, Vasquez-Guzman, Mamidi, Lee, Shade, Jacobs, Chilivers, Lowry, McClean and Osorno.

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 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 classification using a subset of 3,668 markers that had LD r² ≤ 0.1 (markers in linkage equilibrium). (A) Population structure from K = 2 to K = 4. K indicates the number of subpopulations. NA, North America; MA, Middle America (B) phylogenetic tree of genotypes, constructed by using SNPhylo. The colors of subpopulations were the same as population structure plot (K = 4).