Document Type : Research paper
Authors
1
Department of Horticultural Science, Faculty of Agriculture and Natural Resources, Islamic Azad University, Jahrom Branch, Fars Province, Iran.
2
1Department of Horticultural Science, Faculty of Agriculture and Natural Resources, Islamic Azad University, Jahrom Branch, Fars Province, Iran.
3
Department of Agriculture, Jahrom Branch, Islamic Azad University, Jahrom, Iran.
10.22059/ijhst.2025.380901.909
Abstract
Due to water quality/quantity problems and the need to choose resistant species for cultivation in urban green spaces (UGS), the aim of the present research was to study the effect of six months salinity stress (SS) on morpho-physiological and minerals parameters of Conocarpus erectus and Salvadora persica. NaCl was used at 0, 250, 500, and 750 mM concentrations on 3-month-old seedlings. Based on the results, significant changes was observed in traits of plant height (PH), leaf fresh weight (LFW), leaf dry weight (LDW), root diameter (RD), root fresh weight (RFW), and root dry weight (RDW). The highest and lowest chlorophyll content was observed at 0 and 750 mM salinity with a change of 47.11% and 34.24% in C. erectus and S. persica, respectively. With increasing salinity, proline (Pr) content increased, while total protein content (TPC) and total sugar content (TSC) decreased in both species. Under salinity 0-500 mM NaCl, PH, TSC and TPC didn’t show significant changes. In terms of leaf minerals, with increasing salinity levels, leaf calcium (Ca) content decreased and sodium (Na) and chlorine (Cl) increased. Based on the findings, the specie had a high effect on the change of some characteristics under SS, so that some of the properties, e.g., PH, SD, LAI of didn’t show significant changes in S. persica. In general, the morphological and physiological changes of S. persica were less than C. erectus and it can be considered as a plant with better adaptation to SS for cultivation in this hot and dry area.
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