摘要： 为探讨水分胁迫对胡萝卜储藏器官糖代谢的影响，为缺水地区科学栽培胡萝卜提供理论依据，以栽培胡萝卜品种“向阳二号”的6叶期幼苗为试材，研究了不同程度水分胁迫条件下胡萝卜储藏器官对葡萄糖、果糖、蔗糖及淀粉代谢的变化。结果表明，在水分胁迫下，蔗糖水平明显降低，胁迫程度越大，蔗糖水平越低，而葡萄糖和果糖水平却随之提高。淀粉含量的变化也是随着水分胁迫程度的增强而减少的，其中木质部中淀粉含量的变化要比韧皮部中的大。

关键词: 胡萝卜, 水分胁迫, 储藏器官, 糖代谢

Abstract: In order to investigate the effects of water stress on the Carbohydrate Metabolism of the carrot storing organ and provide theory basement for culturing carrot in the water deficient area, the effects of water stress on fructose, glucose, sucrose and starch in carrot storing organ were studied with carrot cultivar "Xiangyang Ⅱ" (6 leaves). The results indicated that sucrose level significant decreased under water stress, the more water stress, the less sucrose. On the contrary, fructose and glucose level increased when water stress occurred. The tendency of starch content was same as that of sucrose (the change in xylem more than in phoem) change of starch in the xylem is more significant than in phloem.

Key words: Carrot, Water stress, Storing organ, Carbohydrate metabolism

中图分类号: 

• S631.2