Fig. 5: Genome-wide analysis of SNP diversity in the Global Tetraploid Wheat Collection and cross-population selection signatures from wild to domesticated emmer transition (WEW to DEW) on the basis of 17,340 informative SNPs.
From: Durum wheat genome highlights past domestication signatures and future improvement targets
a, SNP-based diversity index (DI) for the main germplasm groups identified in the Global Tetraploid Wheat Collection: WEW, DEW, DWL and DWC. DI is reported as a centered 25 SNP-based average sliding window (single SNP step). Top and bottom 2.5% DI quantile distributions are highlighted as red- and blue-filled dots, respectively. b, Cross-population selection index metrics for the comparison between WEW and DEW. Selection metrics are provided for: diversity reduction index (DRI), divergence index (Fst), cross-population extended haplotype homozygosity (XP-EHH), multilocus test for allele frequency differentiation (XP-CLR) and haplotype-based differentiation test (hapFLK). For DRI, top and bottom 2.5% DI quantile distributions are highlighted as red- and blue-filled dots, respectively, while for the other selection metrics top 5% quantile distributions are highlighted as red-filled dots. The physical ___location of genes (Supplementary Table 12) and QTL confidence intervals relevant to domestication and breeding is reported.
