套袋对‘黄金梨’果实糖代谢及相关酶活性的影响

Effects of Bagging on Sugar Metabolism and Related Enzyme Activities in Whangkeumbae Pear

以黄金梨为试材,研究了套袋对果实糖含量及糖代谢相关酶活性的影响。结果表明:发育过程中套袋黄金梨果实的糖含量、淀粉含量以及糖代谢相关酶活性的变化趋势与对照果实基本一致。与对照相比,套袋果实可溶性糖和淀粉的含量都有所降低,转化酶、淀粉酶活性均有一定的升高,而蔗糖合酶、蔗糖磷酸合酶活性下降。因此,套袋可能通过影响发育过程中糖代谢相关酶的活性调控果实的生长发育、糖分积累和品质形成。

The effects of bagging on sugar contents and related enzyme activities in sugar metabolism were studied with Whangkeumbae pear. The results showed that the sugar and starch contents and related enzyme activities under bagging conditions had almost the same change trends with those of control fruits during the whole developmental stage. Compared with the natural growth fruits, sugar and starch contents in bagging fruits were much lower in some extents. The results also indicated that bagging fruits increased the activities of invertase and amylase, but decreased the activities of SS and SPS. Therefore, it is concluded that the changes of activities of related enzymes in sugar metabolism regulated by bagging environment may be responsible for the regulation of fruit growth, sugar accumulation and quality formation.