Fig. 2
Genome-wide detection and functional annotations of selection sweeps during domestication and improvement. a, f The genome-wide selective signals associated with domestication (a) and improvement (f). Putative domestication sweeps (a) and improvement sweeps (f) are shown as orange bars above the black dashed horizontal threshold line. Blue arrows in (a) and (f) indicate previously reported QTLs located within the domestication and improvement sweeps. QTL names are listed above the corresponding blue arrows, and QTLs are shown for fruit weight (red), fruit acid (blue), fruit sugar (black), fruit skin color (pink), and total phenolics (green). fw, fruit weight; SSC, soluble solid content; sor, sorbitol content; TS, total sugar content; suc, sucrose content; fru, fructose content; glu, glucose content; TA, titratable acid content; mal, malic acid content; cit, citric acid content; skc, fruit kin color; phe, total levels of phenolic compounds. b, d, e Manhattan plots of GWAS association peaks related to fruit weight on chromosomes 2, 6, and 8 that overlapped with domestication sweeps. The gray horizontal dashed lines in each figure indicate the Bonferroni significance threshold of GWAS (P < 3.2 × 10− 8). c, g–i Manhattan plot of GWAS association peaks related to fruit SSC on chromosomes 1, 4, 5, and 6 that overlapped with domestication and improvement sweeps. The black horizontal dashed lines in each figure indicate the Bonferroni significance threshold of GWAS (P < 2.6 × 10− 8). j Fruit taste-related QTL hotspots in domestication sweeps. k Fruit taste-related QTL hotspots in improvement sweeps