Tre6P content and the expression patterns of related genes in strong upright spring shoots of blueberries. (A) Tre6P content in strong upright spring shoots of blueberries. (B–E) Changes in expression levels of VcTPS1, VcTPS2, VcTPP, and VcSnRK1 in strong upright spring shoots of blueberries. The significance of gene expression differences between different tissues during the same period was represented by uppercase letters, while the significance of gene expression differences between different periods of the same organization was represented by lowercase letters (values = means ± SE, Duncan’s test, n = 3).