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