Improvement in Physiobiochemical and Yield Characteristics of Pea Plants with Nano Silica and Melatonin under Salinity Stress Conditions

The effect of nano silica (50 mL L−1) and melatonin (75 µM) individually or in combination foliar applications on the morphophysiological, biochemical yield properties pea plants under salinity stress conditions was evaluated. Salt caused a remarkable decrease growth characteristics; for example, plant dry weight, height, number flowers plant−1, pods weight 100 green seeds protein concentration during both seasons were decreased compared with control. Similarly, their physiobiochemical characteristics negatively affected; chlorophyll a, b relative water content (RWC) significantly reduced stressed plants. However, malondialdehyde (MDA), hydrogen peroxide, electrolyte leakage (EL%), super oxide antioxidant components (catalase (CAT), superoxide dismutase (SOD), peroxidase (POX) total phenolic compounds) increased when salt control On other hand, application enhanced characteristics, morphological best treatment (nano + melatonin), which significant increases seeds, concentration, concentrations RWC Additionally, EL%, MDA, O2⋅− H2O2 adjusted upregulation enzymes, proline compounds untreated Generally, it can be suggested that co-application plays positive role alleviating adverse impacts by modifying metabolism regulating defense system as well scavenging reactive oxygen species.