tailieunhanh - Comparison of two halophyte species (Salsola soda and Portulaca oleracea) for salt removal potential under different soil salinity conditions
Salt-induced land degradation has gradually increased in several major irrigation schemes within arid and semiarid regions. To maximize crop productivity under saline conditions, either salt tolerance crops should be cultivated or areas should be desalinated. | Turkish Journal of Agriculture and Forestry Turk J Agric For (2017) 41: 183-190 © TÜBİTAK doi: Research Article Comparison of two halophyte species (Salsola soda and Portulaca oleracea) for salt removal potential under different soil salinity conditions 1, 1 1 2 Sema KARAKAŞ *, Mehmet Ali ÇULLU , Murat DİKİLİTAŞ Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Harran University, Şanlıurfa, Turkey 2 Department of Plant Protection, Faculty of Agriculture, Harran University, Şanlıurfa, Turkey Received: Accepted/Published Online: Final Version: Abstract: Salt-induced land degradation has gradually increased in several major irrigation schemes within arid and semiarid regions. To maximize crop productivity under saline conditions, either salt tolerance crops should be cultivated or areas should be desalinated. One of the most promising and cost-effective ways to maximize crop productivity is to use salt tolerant plants to remove salt from the soil. For this study, four levels of saline soils were cultivated with the halophyte species Salsola soda L. and Portulaca oleracea L. in pots. The soils had the following salinity levels: 1) nonsaline soil (NSS, dS m–1), 2) slightly saline soil (SSS, dS m–1), 3) moderately saline soil (MSS, dS m–1), and 4) highly saline soil (HSS, dS m–1). To assess the salt tolerance capacity of the halophytes, physiological and biochemical parameters as well as the accumulation of leaf Na+ and Cl– ions in the halophytes were investigated. Soils were additionally evaluated for electrical conductivity, pH, and soil ion concentrations prior to planting and the following harvest. The fresh and dry weights of both halophytes increased with increasing salinity levels (P ≤ ). The proline contents of S. soda and P. oleracea were and times higher, respectively, than within the same species grown .
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