标题：Le potentiel mycorhizogène des sols urbains en zones semi-arides et la tolérance du Palmier dattier (Phoenix dactylifera L.) au déficit hydrique (The mycorrhizal potential of urban soils in semi-arid zones and tolerance of date palm (Phoenix dactylifera L.) to water deficit),
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2014
卷号：5
期号：6
页码：1957-1967
出版社：University of Mohammed Premier Oujda
摘要：In the current study, the importance of arbuscular mycorrhizal fungi (AMF) in the resistance to water deficit of date palm (Phoenix dactylifera L.) was assessed. From urban soils (three gardens and three boulevards) and suburban soils (two palms) of Marrakech city (Morocco), eight sites were selected and studied for their ability to improve the tolerance of the date palm to water stress. The application of water stress 25% of field capacity (CC) significantly increases the natural frequency of mycorrhizal colonization (100%) in plants grown in soils of the eight sites studied in comparison with 50, 75, and 100% CC. Thus, plants grown in soils from gardens represent the highest intensity of roots mycorrhizal colonization of palm after eight months of culture and regardless of the level of water deficit imposed in the soil. The infection frequency of roots reaches 85% in plants grown in soil from the garden site (J2) after the application of water stress 50% CC. Moreover, the application of water deficit by 25% and 50% CC significantly reduces the growth parameters of the date palm which is acco mpanied by a significant increase in levels of P, N, K and Na. Similarly, the analysis of biochemical parameters (proline, phenols, soluble sugars and proteins) showed significantly higher levels in plants grown in soils of gardens and palm groves in comparison with those grown in soils of boulevards in limiting conditions of water (25% CC)
关键词：Soil fungi; date palm; drought; physicochemical and biochemical parameters; urban land.
