The expression of sps decreased at 15 d after anthesis and presented a peak again at 35 d after anthesis. In S. chmielewskii fruit, the trends of the expression of tft1 and tft10 were
different from 25 d after anthesis, as tft1 increased slightly and tft10 first rose and then fell. More notably, the expression of sps increased drastically at 45 d after anthesis, which was consistent with the variation tendency of the sucrose content.