Normalized expression of SlTCP12 , SlTCP15 and SlTCP18 in tomato fruit at Breaker + 7 stage. Expression values are normalized for each gene related to wild type, expressed as 2 –δδCt. A. In the ripening defective transgenic plants with RNAi-suppressed SlAP2a. T-test p-values: 0.04 (SlTCP12), 0.81 (SlTCP15), and 0.03 (SlTCP18). B. In the ripening defective mutant Cnr, p-values: 0.01 (SlTCP12), 0.19 (SlTCP15), and 0.05 (SlTCP18). C. In the ripening defective mutant rin, p-values: 0.001 (SlTCP12), 0.05 (SlTCP15), and 0.01 (SlTCP18). D. In the ripening defective mutant nor, p-values: 0.3 (SlTCP12), 0.5 (SlTCP15), and 0.7 (SlTCP18). Asterisks indicate significant differences (p ≤ 0.05).