Fig. 1
From: Episodes of gene flow and selection during the evolutionary history of domesticated barley
Structure and geography of barley populations. a The top two PCs of the nucleotide diversity in wild and cultivated barley. Wild barley accessions are marked as crosses and domesticated accessions as full circles. Several accessions previously described as wild, but collected outside of the primary distribution range, were labelled as feral/hybrid (full triangles) and excluded from further analyses (see Additional file 1: Table S1) . None of the top 20 PCs placed cultivated barley in separate clusters (not shown). b–d PCAs of the cultivated barleys (wild barley excluded). On all three panels, group membership is indicated with the same colours as on the map below. e Geography of the domesticated groups defined by the PCA of cultivated barley