研究旨在:(a)评价树体在锻炼温度条件下,葡萄柚外果皮中还原糖和脯氨酸的变化;(b)叶片与外果皮中糖和脯氨酸在抗寒锻炼期间变化关系。以在5℃贮藏的果实外果皮中还原糖,蔗糖和脯氨酸作为对照。材料和方法植株:以嫁接在枳砧上的“马叙”葡萄柚为试材,植株来源于商品化柑桔苗圃,栽植在盛有1:1:1的砂、泥炭藓和轻石的38升的容皿中。四年 The aim of the study was to: (a) evaluate the changes of reducing sugars and proline in the exocarp of grapefruit under the exercise temperature; (b) the relationship between the changes of sugar and proline in leaves and exocarp during cold-resistance training . Reducing sugars, sucrose and proline were used as controls in the pericarp of fruits stored at 5 ℃. MATERIALS AND METHODS Plant: The “Marche” grapefruit grafted on the red antelope was used as test material. The plant was derived from commercial citrus nursery, and planted in sand, peat moss and pumice 38 liter container. Four years