COMPARATIVE STUDY ON AMELIORATIVE EFFECT OF SALICYLIC ACID AND ITS DERIVATIVES IN F1 HYBRID, INDAM NAVEEN 2000 VARIETY OF LYCOPERSICUM ESCULENTUM MILL. UNDER SALINITY STRESS

Agriculture productivity is severely hampered by salinity of the soil. To increase plant salinity tolerance, a variety of tactics have been used. The use of salicylic acid (SA) to promote plant salt tolerance has been widely reported. Biologically active salicylic acid (SA) derivative (Sulfosalicyclic acid, SSA) and SA were chosen to study their ameliorative effect of salt stress in Solanum esculentum mill. Indo –American Hybrid Seeds F1 Hybrid, Indam Naveen 2000 variety were used in this study. The compounds were applied as soil drenching method. Under 100mM NaCl treatment the growth parameters were significantly reduced. But growth inhibition shown less in SA or SSA treated (5mM) plants. Results of the study showed that the chemicals have significant ameliorative effect on salinity stress tolerance in tomato. Stress ameliorating metabolites like Ascorbic acid, Proline, Glutathione, a-tocopherol were significantly affected in plants under salinity stress and their concentration were shown to increase significantly in plants under SA or its derivative treatment compared to plants under salinity stress or in untreated control plants (P≤0.05). From this study it is revealing that soil drenching application of SA or SSA significantly reduced the salinity impact on tomato plants and derivatives of salicylic acid. It is also had proven that Sulphur derivative of salicylic acid (SSA) showed the better ameliorative effect on tomato plant under salinity stress.