黄金梨果实发育过程中主要营养成分的变化

黄金梨果实纵径和横径的生长曲线相似,均呈“双S”型。果实细胞分裂进行到花后30d左右,细胞停止分裂后,果实增大主要依靠细胞体积的增加。果实发育期主要营养成分(糖、酸、维生素C、淀粉等)含量呈规律性变化,可溶性糖含量呈逐渐上升趋势,可滴定酸含量呈不断下降趋势,维生素C含量为“降-升-降”变化趋势,淀粉含量变化呈“抛物线”型,随着果实的成熟,可溶性固形物含量逐渐增加,果实硬度逐渐降低。

Studies on the Changes of Some Main Nutritional Components in Hwangkumbae Pear during Maturation

The growth curves of fruit length and breadth were "double S" shapes in Hwangkumbae pear. Cell division would not stop until about 30 days after blossom, the fruit growing depended on the growth of cell volume mainly when cell stopped splitting. The contents of main nutritional components, including soluble sugar, titratable acid, vitamin C, starch and so on, changed regularly. The content of soluble sugar showed the trends of increasing, titratable acid content declined gradually. The change of Vitamin C was shown as "down-up-down", starch content as parabola shape. With the development of fruit, the content of soluble solid increased and the fruit firmness decreased.