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. 2020 Jun 22;20:71. doi: 10.1186/s12862-020-01635-2

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© The Author(s) 2020

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 3 — Genetic structure of the 278 Arabidopsis thaliana populations of study across the Iberian Peninsula depicting the four genetic clusters (NW-C1, NE-C2, relict-C3 and SW-C4). a Results from the Bayesian clustering method implemented in STRUCTURE. b Results from the Discriminant Analysis of Principal Components (DAPC). c Geographic distribution of homogeneous populations from each genetic cluster. Homogeneous populations (N = 230) were those with average membership proportions among individuals within populations greater than 0.3 for only one genetic cluster. Mixed or heterogeneous populations (N = 48) are also shown in grey. The map of Fig. 3c was obtained from the National Center for Geographic Information (CNIG) of Spain