Structure plot of a) tetraploid wheats in the K = 2 model and b) durums only in the K = 4 model. Each accession is depicted by a vertical line segmented into K coloured sections. The length of each section is proportional to the estimated membership coefficient (Q) of the accession to each one of the K number of clusters. Accessions are assembled by a) taxon and b) country of origin.
Oliveira et al. BMC Genetics 2014 15:54 doi:10.1186/1471-2156-15-54