Enzyme activity and gene expression levels in each banana segment during ripening. (A) Activity of invertase (IN), α-amylase (AL), and polygalacturonase (PG) in three banana segments during ripening; (B) Expression levels of the MaACO, MaACS, MaPaO, MaSGR, MaPL2, MaXET5, and MaBAM7 genes in the stalks, middles, and tips of bananas during ripening. Expression levels were determined via real-time quantitative PCR. The statistical significance was set at p < 0.05; *p < 0.05; ***p < 0.001.