Fig. 6

The mRNA levels of SlSWEETs in different 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: H, hexose-accumulating tomato genotype; S, sucrose-accumulating tomato genotype; I, immature stage; II, mature green stage; III, breaker stage; IV, pink stage; V, red ripe stage