Fruit growth. a) Fruit harvested at different time points during development. b) Peach fruit growth curve in fresh mass (g) during fruit development for 106 genotypes. The symbols represent the mean of six fruits, open triangles represent the ‘low-fructose-to-glucose-ratio’ genotypes, and closed circles represent the ‘standard-fructose-to-glucose-ratio’ genotypes. The lines are fitted linear models by GLMM for all of the ‘low-fructose-to-glucose-ratio’ genotypes (red dashed line) and for all of the ‘standard-fructose-to-glucose-ratio’ genotypes (blue solid line).