Preharvest Treatment of Methyl Jasmonate and Salicylic Acid Increase the Yield, Antioxidant Activity and GABA Content of Tomato

This study investigated the effect of preharvest treatment 0.25 mM methyl jasmonate (MeJA) and 0.5 salicylic acid (SA) on quality parameters, most important secondary metabolites (lycopene, ?-carotene, ascorbic acid, total phenolics, flavonoids), antioxidant activities, amino contents ‘Kumato’ tomato. Treatments with MeJA SA led to an increase yield per plant were effective in maintaining fruit attributes such as firmness, soluble solids, titratable acidity, Brix ratio at two maturity stages (S1 S2). In addition, lycopene, flavonoids significantly higher treated than control. Moreover, ?-aminobutyric (GABA), essential acids, activity increased due treatments both stages, especially S2. Overall results also showed effectiveness improving nutritional