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

ACTA HORTICULTURAE SINICA ›› 2006, Vol. 33 ›› Issue (4): 801-804.

• 研究简报 • Previous Articles Next Articles

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

Abstract

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

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

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