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首页> 外文期刊>Acta Horticulturae >The role of NAA in the regulation of mineral concentration of date palm seedlings ('Shabeeby') under salt stress conditions.
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The role of NAA in the regulation of mineral concentration of date palm seedlings ('Shabeeby') under salt stress conditions.

机译：在盐胁迫条件下，NAA在调节枣椰子幼苗（'Shabeeby'）矿物质浓度中的作用。

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In many countries including Qatar, salinity in irrigation water is a serious problem for agriculture. Irrigation with saline water reduces the plant growth and productivity of most fruit trees. An experiment was carried out at the Research Station of Qatar University, to study the effect of NAA on mineral concentrations of date palm (Phoenix dactylifera L. 'Shabeeby') seedlings. The effects of NAA alone (0, 150, 300 mg/L) or in combination with NaCl and NaCl alone (0, 6000, 12000, 18000 mg/L) added to the irrigation water were studied. After 115 days from the first treatment, concentrations of N, Ca, Mg, Cu, Mn, Zn in leaves and N, P, K, Ca, Mg, Cl, Cu, Mn, Zn and Fe in roots significantly increased with the application of high NAA in 'Shabeeby' date palm seedlings. High salinity concentrations in irrigation water decreased leaf P, Cu, Mn, Zn and Fe but increased K, Na and root Cl and Cu concentrations relative to the control seedlings. The combination of high NAA with high salinity in irrigation water reduced the adverse effects of salt, preventing the reduction of most mineral elements in leaves and increased the concentrations of others in roots. However, the increases of Na in leaves and Na, Cl, N, P, Ca and Mg in roots with the application of high NaCl in combination with high NAA concentrations in irrigation water, without any symptoms of NaCl stressed indicated that the high accumulation of Na, Cl and other elements might have played an important role in osmotic adjustment in vacuoles and that it improves the water balance of 'Shabeeby' seedlings. Compared to high NaCl concentration used alone, the irrigation of date palm seedlings with a high concentration of NAA in combination with salts added to the water reduced the adverse effects of salt by preventing the reduction of mineral elements concentration in leaves and increased the element concentrations in roots.
机译：在包括卡塔尔在内的许多国家，灌溉水中的盐分是农业的严重问题。用盐水灌溉会降低大多数果树的植物生长和生产力。在卡塔尔大学研究站进行了一项实验，以研究NAA对枣椰子（Shapeby）幼苗的矿物质浓度的影响。研究了将NAA单独（0、150、300 mg / L）或与NaCl和单独的NaCl组合（0、6000、12000、18000 mg / L）添加到灌溉水中的效果。首次处理115天后，叶片中的N，Ca，Mg，Cu，Mn，Zn和根部的N，P，K，Ca，Mg，Cl，Cu，Mn，Zn和Fe的浓度显着增加'Shabeeby'枣椰子幼苗中的高NAA值。相对于对照幼苗，灌溉水中高盐度降低了叶片P，Cu，Mn，Zn和Fe的含量，但增加了K，Na和根系Cl和Cu的含量。灌溉水中高NAA和高盐度的组合减少了盐的不利影响，防止了叶片中大多数矿物质的减少，并增加了根中其他矿物质的浓度。但是，在灌溉水中施用高浓度NaCl和高浓度NAA的同时，叶片中Na的增加以及根中Na，Cl，N，P，Ca和Mg的增加，而没有任何NaCl胁迫的症状表明，NaCl的高积累Na，Cl和其他元素可能在液泡的渗透调节中起了重要作用，并改善了'Shabeeby'幼苗的水分平衡。与单独使用高浓度的NaCl相比，高浓度NAA结合水添加盐的灌溉对枣椰树幼苗的灌溉通过防止叶片中矿质元素浓度的减少和盐碱含量的增加而减少了盐的不利影响。根。

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