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. 2017 Sep 26;8:1611. doi: 10.3389/fpls.2017.01611

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Copyright © 2017 Zhang, Zhang, He, Wang, Ma and Yin.

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) or licensor 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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Principal component analysis (PCA), phylogenetic tree construction and population structure analysis of the 158 peanut accessions. (A) Scatter plots of the first two principal components. The horizontal and vertical coordinates represent PC1 (with variance explain 8.16%) and PC2 (with variance explain 5.23%). Each dot represents an accession. (B) Phylogenetic tree constructed with 17,338 high quality SNPs. (C) Population structure dividing the accessions into two groups (ΔK value was 0.47): subsp. hypogaea (group I) and subsp. fastigiata (group II).