Enzyme profiles. Changes in the enzymatic capacities (nmol g FW -1-min-1) during fruit development for 106 genotypes. a) PGM (phosphoglucomutase), b) F16BPase (fructose-1,6-bisphosphatase), c) SuSy (sucrose synthase), d) FK (fructokinase), e) UGPase (UDP-glucose pyrophosphorylase), f) HK (hexokinase), g) SPS (sucrose phosphate synthase), h) SDH (sorbitol dehydrogenase), i) SO (sorbitol oxidase), j) PFK (ATP-phosphofructokinase), k) NI (neutral invertase) and l) AI (acid invertase) capacities. The symbols represent the mean of the two technical replicates, open triangles represent the ‘low-fructose-to-glucose-ratio’ genotypes and closed circles 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).