枣树休眠生理研究

以3年生温室栽培和大田栽培临猗梨枣为试材,研究了枣树冬季休眠过程中水分、碳水化合物、游离氨基酸、游离脯氨酸和可溶性蛋白质含量的动态变化。结果表明,在枣树自然休眠(10月10日至12月10日)过程中枝条中可溶性蛋白质含量、淀粉含量、总水分含量、自由水含量下降,可溶性糖含量、游离氨基酸、游离脯氨酸含量、束缚水含量上升。在试验期间,大田和温室梨枣枝条的生理指标含量和变化趋势存在差异。总水分含量、自由水含量在试验期间温室的较高,束缚水含量大田的较高。温室内枣树枝条可溶性糖含量在自然休眠期高于大田的,淀粉的含量进入休眠前温室的高。自然休眠期温室的可溶性蛋白质含量、游离氨基酸含量较高,自然休眠结束后温室的又低于大田的。

Study on the dormant physiology of Chinese jujube trees

3-year-old trees of Linyi lizao jujube cultivar cultivated in greenhouse and field were used to study physiological indexes such as the content of water, carbohydrates, free amino acid, free proline and soluble protein etc. during the winter dormant period. The results showed that in the rest period (from 10th October till 10th December) the content of soluble protein, starch, total water, and free water decreased, but the content of soluble sugar, free amino acid, free proline, and bound water increased. The content and variation trends of some physiological indexes were different between the field cultivated and the greenhouse cultivated trees. The total water content and free water content were higher in greenhouse. Bound water content was higher in field. Soluble sugar content of greenhouse was higher in the rest period. Starch content of greenhouse was higher before the rest period. Soluble protein content and free amino acid content of greenhouse were higher in the rest period and lower after the rest period.