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. 2018 Aug 31;18:175. doi: 10.1186/s12870-018-1386-2

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© The Author(s). 2018

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. 1 — Multidimensional scaling (MDS) of genome-wide SNPs generated by the genotyping-by-sequencing (GBS) pipeline. Low-chilling requirement (CR) cultivars are in red circles. High-CR cultivars are in blue circles. Parents of the F1 SPD x HS population are in red-dotted (SPD) and blue-dotted (HS) circles. F1 SPD x HS are in black circles