The effect of sodium nitroprusside on the physiology of sunflower seedling growth under salinity conditions

Poormirza, Shahrouz (2020) The effect of sodium nitroprusside on the physiology of sunflower seedling growth under salinity conditions. Masters thesis, University of Mohaghegh Ardabili.

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Abstract

Research Aim:To investigate the effect of sodium nitroprusside on germination characteristics and seedling growth of sunflower seeds under salinity stress. Research method:In this study, the effect of sodium nitroprusside on seed germination and sunflower seedling growth under salinity stress was studied in the laboratory of Mohaghegh Ardabili University. This factorial experiment was performed in a completely randomized design with three replications. The studied treatments included three levels of salinity stress from sodium chloride (NaCl) (0, 100, 150 mmol) and sodium nitroprusside levels (0, 100 and 200 ppm). Biochemical and physiological traits were measured. Findings: The results of this study showed that germination percentage, seedling dry weight, seedling length and weight vigor index were affected by the interaction of salinity and sodium nitroprusside, but simple effects were significant on germination rate, seedling length, catalase, peroxidase. Conclusion:According to this study, it can be concluded that salinity reduces physiological traits and germination indices and increases antioxidant enzymes. Also, sodium nitroprusside has an encouraging effect as a nutrient additive. It is considered under certain concentrations depending on the type of plant. The effect of nitric oxide has different effects depending on the dose. The study showed that plants grown in 200 ppm SNP showed the best response in the growth characteristics of sunflower plants biochemical components.

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