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. 2020 Aug 20;10:14034. doi: 10.1038/s41598-020-69442-9

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The structure plot of the 92 Iranian wheat cultivars and landraces identified by K = 2 using 6,349 SNPs. (a) Plot of the ad hoc statistic ΔK, which is ΔK tends to peak at the K value that corresponds to the highest hierarchical level of substructure. The modal value of this distribution is the true K, here two clusters. (b) Principal coordinate analysis (PCoA) plot of the first two PCo in 92 wheat genotypes including landrace (yellow), cultivar genotype (blue) and intermediate cultivar genotype (red). The first and second PCo respectively make up 19 and 6% of the total variation. (c) Population structure inference of the 92 Iranian wheat genotypes based on SNP marker, using STRUCTURE. Vertical bars display individual genotypes. The segment color length in each vertical bar depicts the proportion contributed by each of the two populations in the model to that individual.