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Effects of low temperature and drought on the physiological and growth changes in oil palm seedlings

文献类型: 外文期刊

作者: Cao, Hong-Xing 2 ; Sun, Cheng-Xu 2 ; Shao, Hong-Bo 1 ; Lei, Xin-Tao 2 ;

作者机构: 1.Chinese Acad Sci, CAS Shandong Prov Key Lab Coastal Environm Proc, Yantai Inst Costal Zone Res, Yantai 264003, Peoples R China

2.Chinese Acad Trop Agr Sci, Coconut Res Inst, Wenchang 571339, Hainan, Peoples R China

3.Qingdao Univ Sci & Technol, Inst Life Sci, Qingdao 266042, Peoples R China

关键词: Oil palm;drought stress;low temperature stress;physiological characteristics

期刊名称:AFRICAN JOURNAL OF BIOTECHNOLOGY ( 影响因子:0.573; 五年影响因子:0.794 )

ISSN: 1684-5315

年卷期: 2011 年 10 卷 14 期

页码:

收录情况: SCI

摘要: Water deficiency and low temperature are two important ecological factors which affect the distribution and cultivation of oil palm. To find out how oil palm adapts to the environmental conditions, the dynamics of a series of important physiological components derived from the leaves of potted oil palm seedlings under drought stress (DS) (water with holding) and low temperature stress (LTS) (10 degrees C) were studied. The results showed that low temperature and water stress inhibited the growth of oil palm seedlings. The relative conductivity, injury index, malondialdehyde (MDA) and proline content in the leaves increased to different degrees with the extension of low temperature and drought stress. Superoxide dismutase (SOD) and peroxidase (POD) activities increased and then decreased gradually with the duration of treatment time. The variations of the earlier mentioned parameters except proline content under low temperature stress were greater than that under drought stress. Thus, oil palm possibly showed different response mechanisms under low temperature and drought stress by mediations of these substances, in order to increase plant defense capability. These data provided the information that was utilized to initiate the breeding programme used to improve drought and cold tolerance in oil palm.

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