Exogenous Melatonin Application Induced Morpho-Physiological and Biochemical Regulations Conferring Salt Tolerance in Ranunculus asiaticus L.

This study presents the effects of exogenous melatonin application at different concentrations (50, 100, and 200 ?M) on morphological, physiological, antioxidant defense systems buttercup plant under salinity stress (4.5 5.5 dS·m?1 EC). Expectedly, negatively affected growth parameters, cell membrane stability, POX enzyme activity R. asiaticus compared to non-stressed plants. However, in a dose-dependent manner, foliar decreased salt stress-induced symptoms retarded vegetative growth, physiological characteristics, oxidative level. The results obtained, revealed significant effectiveness treatment ?M concentration conditions by enhancing traits such as chlorophyll carotenoids content, relative water proline peroxidase (POD), electrolyte leakage rate, Na+ well delaying emergence flower buds stress. tolerance index percentages (STI%) for all estimated characters are also calculated studied parameters. uncovered beneficial effect reducing that can be used reduce ranunculus production.