Fig. 9.

Genome-wide association study and selective sweeps. (A) Genome-wide association study (GWAS) for fruit firmness (g/cm²) measured with a handheld penetrometer in a population of 466 wild and domesticated individuals. The horizontal dashed line delineates a Bonferroni-corrected P = 0.05 significance threshold. (B,C) Cross-population composite likelihood ratio (XP-CLR) statistics for DNA variants (loci) distributed across the octoploid strawberry genome. The dashed line identifies the upper 0.01 quantile of XP-CLR estimates. (B) XP-CLR statistics were estimated for the “early” phase of domestication by comparing DNA variants between wild ecotypes and both early hybrids and heirloom cultivars. (C) XP-CLR statistics were estimated for the “modern” phase of domestication by comparing DNA variants between modern cultivars and both early and heirloom cultivars.