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. 2019 Jan 6;19:7. doi: 10.1186/s12870-018-1576-y

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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 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.

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Fig. 2 — Geographic map of structure ancestry coefficients. Results of structure analysis performed on 709 grapevine accessions of sample set #2 (coming from Georgia, Turkey, Greece, Cyprus, Lebanon, Balkans, Italy, France and Iberian Peninsula) based on 18 K SNP profiles. The most likely number of ancestral groups was three. Genotypes from North and South Italy were split in two populations. Dots indicate the countries where the genotypes originated. The higher the colour shade the higher the percentage of membership