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Seaweed extract application and arbuscular mycorrhizal fungal inoculation: a tool for promoting growth and development of date palm (Phoenix dactylifera L.) cv «Boufgous»
South African Journal of Botany ( IF 3.1 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.sajb.2020.04.004
Mohamed Anli , Mimoun EL Kaoua , Mohamed ait-el-Mokhtar , Abderrahim Boutasknit , Raja ben-Laouane , Salma Toubali , Marouane Baslam , Karim Lyamlouli , Mohamed Hafidi , Abdelilah Meddich

Abstract In oases ecosystems, date palm (Phoenix dactylifera L.) is a plant that has several socio-economic and environmental roles. During the last decades, the cultivation of date palm and its development are threatened by several constraints, in particular, organic and mineral matter depletion. The main objective of this study was to evaluate the effects of a seaweed extract (SWE) derived from the brown algae Fucus spiralis and an arbuscular mycorrhizal fungus (AMF) strain (Rhizophagus irregularis DAOM 197198) as well as their combination on the growth and development of the date palm (P. dactylifera L.). Growth, physiological, and histological parameters were evaluated. The results show that AMF combined with SWE induced the greatest effect. Indeed this treatment significantly increased the total dry weight, leaf area, stomatal conductance, and nitrogen (N) and phosphorus (P) levels by 27, 36, 48, 377, and 94%, respectively, compared to the control. Potassium (K) and calcium (Ca) contents were highly increased by AMF compared to other treatments. The results also show an enhancement in quantum yield of the photochemistry of PSII (Fv/Fm) by the AMF, SWE, and AMF+SWE treatments. The number of sclerenchyma fibers in AMF+SWE, SWE, and AMF treatments was increased by 681, 164 and 154% respectively, while, the number of vascular bundles was improved by 24% in the SWE treatment compared to the control. Lastly, the results indicated the positive effect of SWE or AMF and, especially, their combination as an efficient practice to improve growth and development of date palm.

中文翻译:

海藻提取物应用和丛枝菌根真菌接种:促进枣椰树(Phoenix dactylifera L.)cv «Boufgous»生长发育的工具

摘要 在绿洲生态系统中,枣椰树 (Phoenix dactylifera L.) 是一种具有多种社会经济和环境作用的植物。在过去的几十年里,枣椰树的种植及其发展受到若干限制因素的威胁,特别是有机物和矿物质的枯竭。本研究的主要目的是评估源自褐藻 Fucus spinis 和丛枝菌根真菌 (AMF) 菌株 (Rhizophagus normis DAOM 197198) 的海藻提取物 (SWE) 的影响以及它们的组合对生长和发育的影响枣椰树 (P. dactylifera L.)。评估生长、生理和组织学参数。结果表明,AMF 与 SWE 相结合诱导的效果最大。事实上,这种处理显着增加了总干重、叶面积、气孔导度、与对照相比,氮 (N) 和磷 (P) 水平分别提高了 27%、36%、48%、377% 和 94%。与其他处理相比,AMF 显着增加了钾 (K) 和钙 (Ca) 的含量。结果还表明 AMF、SWE 和 AMF+SWE 处理增强了 PSII (Fv/Fm) 光化学的量子产率。与对照组相比,AMF+SWE、SWE和AMF处理中厚壁组织纤维数量分别增加了681%、164%和154%,而SWE处理中维管束数量增加了24%。最后,结果表明 SWE 或 AMF 的积极作用,特别是它们的组合作为一种有效的做法来改善枣椰树的生长和发育。与其他处理相比,AMF 显着增加了钾 (K) 和钙 (Ca) 的含量。结果还表明 AMF、SWE 和 AMF+SWE 处理增强了 PSII (Fv/Fm) 光化学的量子产率。与对照组相比,AMF+SWE、SWE和AMF处理中厚壁组织纤维数量分别增加了681%、164%和154%,而SWE处理中维管束数量增加了24%。最后,结果表明 SWE 或 AMF 的积极作用,特别是它们的组合作为一种有效的做法来改善枣椰树的生长和发育。与其他处理相比,AMF 显着增加了钾 (K) 和钙 (Ca) 的含量。结果还表明 AMF、SWE 和 AMF+SWE 处理增强了 PSII (Fv/Fm) 光化学的量子产率。与对照组相比,AMF+SWE、SWE和AMF处理中厚壁组织纤维数量分别增加了681%、164%和154%,而SWE处理中维管束数量增加了24%。最后,结果表明 SWE 或 AMF 的积极作用,特别是它们的组合作为一种有效的做法来改善枣椰树的生长和发育。与对照组相比,AMF+SWE、SWE和AMF处理中厚壁组织纤维数量分别增加了681%、164%和154%,而SWE处理中维管束数量增加了24%。最后,结果表明 SWE 或 AMF 的积极作用,特别是它们的组合作为一种有效的做法来改善枣椰树的生长和发育。与对照组相比,AMF+SWE、SWE和AMF处理中厚壁组织纤维数量分别增加了681%、164%和154%,而SWE处理中维管束数量增加了24%。最后,结果表明 SWE 或 AMF 的积极作用,特别是它们的组合作为一种有效的做法来改善枣椰树的生长和发育。
更新日期:2020-08-01
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