R2distribution of skin and seed PA QTLs identified on the consensus map for concB (A), epiEx (B), catT (C), epiT (D), concK (E) and mDP (F). R2 of main effect QTLs (solid bar) and R2 of digenic epistatic interaction (hatched bars) are sorted according to their magnitude. Skin variables are indicated in darkpink and seed variables in blue. Locus names are indicated on the x-axis and should be read as chromosome@position_on_the_chromosome. Locus names are highlighted in pink for loci identified in both skin and seed for the same variable; we considered loci as "common" loci when their LOD-1 confidence interval overlapped. Loci involved in digenic epistasis are indicated by a dark dot under the locus names for which R2 was estimated without inclusion of the associated interaction.