Extended Data Fig. 2: Population structure and genomic diversity of the I genome.
From: Hordeum I genome unlocks adaptive evolution and genetic potential for crop improvement
a, Population structures were estimated using Admixture software with ancestral population sizes k = 2-6, and the k = 5 with the lowest cross-validation error (CV = 0.25) was selected as the optimal population clustering group. b, PCA analysis of 61 accessions illustrating the results of PC2 versus PC3 (including 12 H. brevisubulatum, 15 H. bogdanii, three H. roshevitzii, nine accessions from the New World and 22 barley accessions). The classifications of species are represented by shapes or colors. c, TreeMix analysis of the gene flow among the I-genome groups and H-genome groups. d, The four-taxon ABBA/BABA test of introgression was conducted with the excess of shared derived alleles (represented by D values and Z-scores) listed on the bottom. e, f, Genome-wide distribution of CLR (e) and Tajima’s D (f) of H. brevisubulatum accessions along 7 chromosomes, red line represents the threshold of the top 5% CLR and the top 2.5% Tajima’s D, blue line represents the threshold of the bottom 2.5% Tajima’s D. g, Distribution of the five copies of SOS1 among Hordeum I, Xa and H species. Source data are provided as a source data file.
