金秋梨果实发育中生长速率及主要营养成分的变化

Studies on the Changes of Growth Rate and Some Main Nutritional Components in Jinqiu Pear Fruits during Maturation

通过对金秋梨果实发育过程中果实生长速率、可溶性糖、有机酸、维生素C、可溶性固形物、可食部分和含水量的测定,系统分析了它们在整个生长发育过程中的动态变化。果实生长速率有三个高峰:一个在花后40d,一个在花后82d,一个在花后131d;还原糖与非还原糖含量的变化趋势在花后110d前基本一致,但在花后110d后恰好相反,还原糖含量下降,非还原糖含量上升;有机酸含量在花后124d前逐渐升高,花后124d以后逐渐降低;维生素C含量呈V形的变化曲线,花后96d前逐渐降低,以后逐渐升高;可溶性固形物、可食部分和含水量在果实成熟过程中呈缓慢增长趋势。

The changes of growth rate, soluble sugar, organic acid, vitamin C, soluble solids, edible part and water content were studied in Jinqiu pear during its maturation. The results were as follows: The fruit growth rate have three peaks:the first when forty days after anthesis, the second when 82d after anthesis, the third when 131d after anthesis; the reducing sugar and non-reducing sugar content showed no difference on the whole before 110d after anthesis, but evidently trends of changes after 110d after anthesis, the reducing sugar content decreased gradually, the non-reducing content increased gradually; the content of organic acid increased gradually before 124d after anthesis , but decreased gradually after 124d days after anthesis; the change of vitamin C content showed a 'V' shape curve, vitamin C content decreased gradually before 96d after anthesis , but increased gradually after 96d after anthesis. Soluble solids, eatable part and water content increased gradually with the fruit maturing.