半根交替干旱对‘大久保’桃叶片中几种有机渗透调节物质的影响

园艺学报 ›› 2006, Vol. 33 ›› Issue (4): 801-804.

半根交替干旱对‘大久保’桃叶片中几种有机渗透调节物质的影响

赵军营^{1, 2};王利军²;范培格²;李连生²;李绍华^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:2005-10-26 修回日期:2006-02-20 出版日期:2006-08-25 发布日期:2006-08-25

Effects of Alternative Half Root Drying on Accumulation of Several OrganicOsmolytes in‘Okubo’Peach Leaves

Zhao Junying^{1, 2};Wang Lijun²;Fan Peige²;Li Liansheng²;Li Shaohua^2*

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

Received:2005-10-26 Revised:2006-02-20 Online:2006-08-25 Published:2006-08-25

摘要/Abstract

摘要： 和良好水分条件的对照相比较, 半根交替干旱处理(ARS) 对‘大久保’桃叶片日出前水势无显著影响, 但显著高于全根干旱(WRS) 处理。WRS导致叶片中游离氨基酸、脯氨酸和可溶性糖含量显著增加和淀粉含量显著降低, 而ARS和对照之间叶片中游离氨基酸、脯氨酸、可溶性糖和淀粉含量均不存在显著性差别。此外, 叶片中游离氨基酸、脯氨酸和可溶性糖含量与日出前叶片水势呈显著或极显著负相关, 而淀粉含量与日出前叶片水势呈极显著正相关。上述结果表明, ARS条件下植株具有良好的水分供应能力, 并不存在积累上述有机物质进行渗透调节的现象。

关键词: 桃, 半根交替干旱, 渗透调节物质

Abstract: Alternative half root drying (ARS) by root sp lit technology did not result in significant decrease in p redawn leaf water potential of young potted‘Okubo’peach plants ( Prunus persica) , as compared with the trees under well irrigation ( control) , while significantly higher predawn leaf water potential was observed on ARS trees than those underwhole root drying (WRS). WRS increased significantly the concentrations of foliar free amino acid, proline and soluble sugarwith a significant decrease in starch. However, there
were no significant differences in the contents of foliar free amino acid, proline, soluble sugars and starch between ARS and control throughout the experiment. Moreover, the concentrations of foliar free amino acid, proline, soluble sugars and starch correlated significantlywith p redawn leaf water potential. It seemed that plants subjected to ARS maintained a good water status without accumulation of the p revious organic osmolytes in leaves for osmoregulation.

Key words: Peach, Alternative half root drying, Osmolyte

赵军营;;王利军;范培格;李连生;李绍华. 半根交替干旱对‘大久保’桃叶片中几种有机渗透调节物质的影响[J]. 园艺学报, 2006, 33(4): 801-804.

Zhao Junying;;Wang Lijun;Fan Peige;Li Liansheng;Li Shaohua. Effects of Alternative Half Root Drying on Accumulation of Several OrganicOsmolytes in‘Okubo’Peach Leaves[J]. ACTA HORTICULTURAE SINICA, 2006, 33(4): 801-804.

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