Diversity of fruit quality associated traits within the RIL population. Top: Ripe fruit of the parental lines PI 414723 (left) and Dulce (right). Bottom: Distribution values of selected metabolites across the RILs population. Parental values are shown at green (PI 414723) and orange (Dulce). Accumulation values across RILs are provided at Additional file 3; units are as detailed for parental values. Parental values (PI 414723/Dulce): sucrose: 4.5/52.1 mg/g; β-carotene: 1.4/9.7 ug/g F.W.; pH: 4.6/6.6; ethylene: 235/54 ppm/kg/hour; methyl 3-(methylthio)propionate: 0/34 ng compound/gr F.W.; ethyl butanoate: 4.6/23.3 ng compound/gr F.W.