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桃果实的糖酸含量变化及相关性分析
引用本文:潘自舒,逯昀,赵佩.桃果实的糖酸含量变化及相关性分析[J].安徽农业科学,2008,36(31).
作者姓名:潘自舒  逯昀  赵佩
作者单位:商丘职业技术学院园林系,河南商丘,476000;商丘职业技术学院园林系,河南商丘,476000;商丘职业技术学院园林系,河南商丘,476000
摘    要:目的]研究果实发育过程中桃糖酸含量的变化特征。方法]以盛花后不同发育时期的普通桃、油桃和蟠桃为材料,蒽酮法测定可溶性糖含量,氢氧化钠滴定法测定有机酸含量。结果]普通桃可溶性糖含量先上升,果实迅速膨大期下降;油桃和蟠桃可溶性糖含量在果实速长生育期前期下降,后期上升,硬核前期下降,之后上升,但发育后期蟠桃可溶性糖含量无明显变化。普通桃有机酸含量在硬核后期和果实迅速膨大前期下降。油桃有机酸含量先下降,又大幅度上升,硬核前期下降,中期无明显变化,之后一直下降。蟠桃有机酸含量先上升后下降。裂果油桃有机酸含量高于正常果。结论]盛花后不同发育时期的3种桃果实糖酸含量的变化趋势不同。

关 键 词:  可溶性糖  有机酸  裂果

Changes of Sugar and Acid Content in Peach Fruit and Its Correlation Analysis
Abstract:Objective] The aim was to study the change characters of the sugar and acid content in peach in the fruit developmental process.Method] With the different developmental stages of ordinary peach,nectarine and plat peach in the different developmental stages after full bloom as materials,the soluble sugar content was detected by anthrone method and the organic acid content was detected by sodium hydroxide titration.Result] The soluble sugar content in the ordinary peach was first increased and decreased in the fruit rapid-expansion stage.The soluble sugar content in the nectarine and plat peach were decreased in the early fruit rapid growth stage and increased in the late stage,decreased in the early stage of hardcore and then increased,but that in the plat peach had no obvious change in the late development stage.The organic acid content in the ordinary peach was decreased in the late stage of hardcore and early fruit rapid-expansion stage.The organic acid content in the nectarine was first decreased and then increased greatly,decreased in the early stage of hardcore,had no obvious change in the middle stage and then was always decreased.The organic acid content in the plat peach was first increased and then decreased,and the organic acid content in the nectarine with cracking fruit was higher than that of the normal nectarine fruit.Conclusion]The changes of the sugar and acid contents in 3 peach fruit were different in the different developmental stages after full bloom.
Keywords:Peach  Soluble sugar  Organic acid  Fruit cracking
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