Different treatment on the SlASR1 and FaASR gene expression levels. (a) The abscisic acid (ABA), sucrose, ABA + sucrose, ABA inhibitor nordihydroguaiaretic acid (NDGA), sucrose analogue turanose, methyl jasmonic acid (MeJA), auxin (IAA) and ethephon were used to treat the MG (33 days) fruit of tomato for 4 h, and total RNA was extracted to analyse the SlASR1 gene expression, and the SlSAND gene was used as an internal control. (b) The same treatment was used to analyse the FaASR gene expression level in the LG (13 days) fruit of strawberry, and the FaActin was used as an internal control. Vertical bars represented standard deviations (SD) of means (n = 3). Asterisks indicate statistically significant differences at P < 0.05 as determined by Student's t‐test. C: control; A: ABA (50 μm); S: sucrose (100 mm); T: turanose (50 mm); N: NDGA (100 μm); IAA (50 μm); MeJA (50 μm); E: ethephon (100 μm).