|Table of Contents|

Effect of Drought Stress on Physiological Characteristics of Root in Malus robusta Rehd.(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年03期
Page:
69-73
Research Field:
Publishing date:

Info

Title:
Effect of Drought Stress on Physiological Characteristics of Root in Malus robusta Rehd.
Author(s):
ZHANG Hao12CAO Hui1
1.Key Laboratory of Biochemistry and Molecular Biology in Universities of Shandong,Weifang College, Weifang,Shandong 261061;
2.Horticultural College,Shanxi Agricultural University,Shanxi Taigu 030801
Keywords:
water stressMalus robusta Rehd.rootphysiological indicatorsPEG-6000
PACS:
S 661
DOI:
-
Abstract:
Taking Malus robusta Rehd.as material,PEG-6000 was used to simulate drought stress,the effect of water stress on physiological characteristics of root were studied.The results showed that the malondialdehyde(MDA) content,the free proline content and the peroxidase(POD) activity increased under different drought stress.The catalase(CAT) activity and the soluble protein content increased during early period,as the duration of drought stress prolonged,the CAT activity decreased,and the decrease order was 20%PEG>15%PEG>10%PEG>5%PEG.CAT activity and soluble protein content decreased under 5% PEG,10% PEG,15% PEG stress,but still higher than the control level.20% PEG made CAT activity,soluble protein content below the control level,protein synthesis was inhibited,roots may have lost the adaptability to drought stress,and serious damage to the cell membrane system.Drought stress on the membrane system damage was the result of enhanced lipid peroxidation.

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Last Update: 2014-08-22