01990naa a2200301 a 450000100080000000500110000800800410001902200140006010000180007424500740009226000090016652011860017565000190136165000250138065000130140565000250141865000210144365000140146465000120147865000110149065300230150170000200152470000220154470000190156670000220158570000180160777300630162521229562020-06-03       2020    bl uuuu     u00u1 u    #d  a1983-14711 aBALATE, C. A.  aAbscisic acid on the quality of tomato fruits.h[electronic resource]  c2020  aThe use of abscisic acid (ABA) in agriculture has increased in the last few years due to the increase in ABA commercial availability at lower costs. The objective of this study was to determine the effect of exogenous ABA on tomato fruit quality parameters such as soluble solids (SS), total and soluble pectins, titratable acidity (TA) and flesh firmness. Tomatoes from the cultivar ?Santa Clara? were the study followed a complete randomized block desig, with four treatments in five repetitions. The treatments were plants not treated with ABA (control), foliar sprayed with ABA at 500 mg L -1, 150 mLdrench with ABA at 500 mg L-1, or foliar plus drench treated with ABA. After harvesting, the physicochemical characteristics of the fruits were evaluated in the laboratory. All treatments were weekly applied to the plants from anthesis to harvest at fully maturity. Root treatment increased SS by up to 26.12%, increased ratio SS/TA, firmness and decreased soluble pectin. According to the results, it can be concluded that the application of ABA to leaves and roots can improve fruit quality by increasing the SS, ratio SS/TA. The method of application affects the SS content.  aPlant hormones  aSolanum lycopersicum  aTomatoes  aTotal soluble solids  aÁcido Abscisico  aHormônio  aPectina  aTomate  aSólidos solúveis1 aSOUZA, D. C. de1 aSILVA, L. F. L. e1 aRESENDE, L. V.1 aFREITAS, S. T. de1 aGUERRA, T. S.  tScientia Agraria Paranaensisgv. 19, n, 1, p. 38-42, 2020.