Calcium application mitigates salt stress in Date Palm (Phoenix dactylifera L.( offshoots cultivars of Berhi and Sayer

Acta agriculturae Slovenica

Hussein J. SHAREEF¹  Muayed F. ABBAS²  Abbas M. JASIM² 

[1] Department of Date Palm Varieties, Date Palm Research Centre, University of Basrah, Basrah, Iraq;Department of Horticulture and Landscape Design, College of Agriculture, University of Basrah, Basrah, Iraq

关键词: antioxidant enzymes;    Date Palm;    salt stress;    IAA;    ABA;    calcium application;    proline;    RWC;   

DOI  :  10.14720/aas.2016.107.1.11

学科分类：农业科学（综合）

来源: Univerza v Ljubljani * Biotehniska Fakulteta / University of Ljubljana * Biotechnical Faculty

【 摘 要 】

The effectiveness of exogenous application of calcium in ameliorating the adverse effects of salt stress (15.9 dS m -1 ) on date palm offshoots ( Phoenix dactylifera L. cultivars of Berhi and Sayer) was investigated. Ca-fertilisers Polixal and Rexene were applied either as soil amendments or foliar spray. The results showed that Polixal at 30 ml offshoot -1 significantly increased plant height, leaf area, total chlorophyll content, RWC, proline concentration, peroxidase activity, IAA content, K + and K + /Na + ratio in leaves of Berhi cultivar, whereas catalase activity, ABA and Cl -  content were decreased. Also Berhi cultivar responded to soil amendments more than to foliar spray. However, Ca-fertilisers mitigated salt stress in the two cultivars and Berhi cultivar was more salt stress tolerant than Sayer cultivar by maintaining the high ratio of K + /Na + and regulating levels of IAA to ABA, in silty clay loam soil. These results suggest that calcium application can improve the defense system under salt stress conditions.

【 授权许可】

Unknown