Fig. 7

Comparison of the enzyme activities of acid invertase (A), sucrose phosphate synthase (B), and sucrose synthase (C) in different tissues and developmental stages of tomato fruits of different sugar accumulating genotypes. Error bars =  ± SEM (n = 3). Student’s t test, *P < 0.05; **P < 0.01; ***P < 0.001. Abbreviations: FW, fresh weight; AI, acid invertase; SPS, sucrose phosphate synthase; SS, sucrose synthase; H, hexose-accumulating tomato genotype; S, sucrose-accumulating tomato genotype