Fig. 2: Structure of the genetic diversity of wheat and barley populations.
From: Striking convergent selection history of wheat and barley and its potential for breeding
a, Network phylogenomics of 1,203 accessions of wheat (Triticum durum Td and Triticum aestivum Ta) and barley (Hv) with colours indicating the subgenomes of the species concerned (TdA and TdB for Triticum durum, TaA, TaB and TaD for Triticum aestivum). b, Left: Principal component analysis (PCA) of the genetic structure of wheat (tetraploid 4x, and hexaploid 6x) and barley genotypes, with a colour code illustrating the populations of the different species (ADM for admixed). For tetraploid wheat, GA-type population 1 is excluded for clarity, and emmer and durum wheats are assigned to 4 populations each: 3–6 and 7–10, respectively. Right: geographic locations of the different genotypes (dots) and inferred populations indicated as numbers in coloured circles at the geographic midpoint of each population. c, Phylogenetic analysis of tetraploid and hexaploid wheat accessions with a colour code identifying individual populations of tetraploid emmer wheat (DEW), tetraploid durum wheat (DW) and hexaploid bread wheat (BW), together with AGW (for wild AG-type wheat) and WEW (for wild emmer wheat), as indicated in the legend on the right.
