Types And Methods Of Soil Salinity Essay
Soil salinity is one of the major environmental obstacles that limit the crop productivity. A pot experiment was conducted with an aim to explore the ameliorative effects of exogenously applied sodium nitroprusside (SNP) concentration against salinity stress in Brassica napus (L.) cv. Pactole.
Plants were grown under greenhouse conditions in plastic pots and were exposed to ***** mM NaCl. Further, ***** days old plants were sprayed with sodium nitroprusside (SNP, **** μM) solutions. Plant growth indices, mineral uptake, membrane permeability, lipid peroxidation, H2O2 concentration, chlorophyll and carotenoid concentrations were analyzed.
Salinity stress caused a highly significant decrease in growth parameters, photosynthetic pigments, total carbohydrates and some antioxidants. A significant increase was observed in free proline, shoot and root sodium concentration, malondialdehyde and hydrogen perocide and activity of salinity stress peroxidase (POD) and catalase (CAT) in eggplant plants under salinity stress.
Exogenously applied No increased plant growth significantly both in saline and non-saline conditions. As a consequence of salinity stress, lipid peroxidation, measured in terms of malondialdehyde (MDA) concentration and membrane permeability was decreased by NO. H2O2 concentration was increased by increasing levels of NO. NO also strongly inhibited Na+ and Cl_ accumulation, but stimulated N, P, K, Ca and Mg concentrations of salt…