去果对桃源叶碳水化合物含量及其相关酶活性日变化的影响

园艺学报 ›› 2006, Vol. 33 ›› Issue (3): 605-608.

去果对桃源叶碳水化合物含量及其相关酶活性日变化的影响

李卫东^{1, 2};吴本宏²;李绍华^2*;李连生²

(¹中国农业大学农学与生物技术学院, 北京100094; ²中国科学院植物研究所, 北京100093)

收稿日期:2005-08-23 修回日期:2005-12-06 出版日期:2006-06-25 发布日期:2006-06-25

Diurnal Variations of Carbohydrate Contents and Activities of Related Enzymes in Leaves in Response to Defruiting in Peach Trees

Li Weidong^{1, 2};Wu Benhong²; Li Shaohua^2*;and Li Liansheng²

(¹ College of Agronomy and Biotechnology, China Agricultural University, Beijing 100094, China; ² Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China )

Received:2005-08-23 Revised:2005-12-06 Online:2006-06-25 Published:2006-06-25

摘要/Abstract

摘要： 研究了‘艳丰1号’桃果核硬化期和果实最后迅速生长期去果对源叶碳水化合物含量及其相关酶活性日变化的影响。去果处理和留果对照源叶中总可溶性糖、山梨醇、蔗糖和淀粉含量均持续升高,而葡萄糖和果糖含量持续降低。在全天大多数时间里去果处理源叶中山梨醇和淀粉含量及它们的关键合成酶6 - 磷酸醛糖还原酶(A6PR) 、腺苷二磷酸葡萄糖焦磷酸化酶(ADPGPPase) 活性均显著高于留果对照。就库源关系中可溶性糖和淀粉积累对光合作用的调控进行了讨论。

关键词: 桃, 库源关系, 碳水化合物, 代谢

Abstract: Diurnal variations of carbohydrate content and activities of related enzymes in source leaves in response to defruiting were studied during endocarp hardening and final rapid fruit growth stages of‘Yanfeng Yihao’peach. Results showed that total soluble sugar, sorbitol, sucrose and starch contents, opposite to glucose and fructose contents, tended to increase during the day in source leaves for both retaining fruit ( control) and defruiting treatments ( defruiting). Defruiting resulted in significantly higher contents of sorbitol and
starch, and higher activities of aldose-6-phosphate reductase (A6PR) and ADP-glucose pyrophosphorylase (ADPGPPase) as compared with the control atmost time during a day. Moreover, the role of accumulation of end-product and activities of related enzymes in leaves on reduced photosynthesis under a low sink source ratio in fruit trees was discussed in this paper.

Key words: Peach, Sink-source relationship, Carbohydrate, Metabolism

李卫东;;吴本宏;李绍华;李连生. 去果对桃源叶碳水化合物含量及其相关酶活性日变化的影响[J]. 园艺学报, 2006, 33(3): 605-608.

Li Weidong;;Wu Benhong;Li Shaohua;and Li Liansheng. Diurnal Variations of Carbohydrate Contents and Activities of Related Enzymes in Leaves in Response to Defruiting in Peach Trees[J]. ACTA HORTICULTURAE SINICA, 2006, 33(3): 605-608.

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