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The aim of this study was to analyze the effect of cytokinin and gibberellin on the characteristics of banana fruits ( Musa spp. AAA, cv. Nanica) as a function of the formation period and position in the bunch. A completely randomized, 2×5 factorial design was adopted consisting of two bunch development periods (summer and winter) and five treatments as well as the same arrangement in a split plot with the 2×5 factorial arrangement as the plot and the position of the hand in the bunch (basal, middle and apical) as the subplot. Treatments consisted of spraying twice with either water, 150 mg L -1 of kinetin, 200 mg L -1 of gibberellic acid, 100 mg L -1 of kinetin plus 200 mg L -1 of gibberellic acid or 200 mgL -1 of kinetin plus 200 mg L - 1 of gibberellic acid, all of which were applied from the fourth to the last hand of the bunch. The bunch formation period influenced the filling time, the mass of the bunch and the stalk, the number and the mass of the hands, the number of fruits per hand, fruit size, and the position of the fruit in the bunch as well as the time postharvest shelf life, mass loss, peel color, pH, the soluble solids content and the titratable acidity of the pulp. As applied, the cytokinin and gibberellin did not influence the yield or fruit size, but bunch position had a strong influence on the size and number of fruits per hand. El objetivo de este trabajo fue analizar el efecto de la citoquinina y de giberelinas en las caracteristicas de los frutos de banano ( Musa spp. AAA, cv. Nanica), en funcion del periodo de formacion y la posicion en el racimo. Se adopto un diseno experimental completamente al azar, con arreglo factorial 2×5, dos periodos de desarrollo del racimo (verano e invierno) y cinco tratamientos o, el mismo diseno en parcelas subdivididas, considerando en la parcela el arreglo factorial 2×5, y en la subparcela, la posicion de la mano en el racimo (basal, mediana y apical). Los tratamientos constituyeron dos pulverizaciones con agua, 150 mg L -1 de cinetina, 200 mg L -1 de acido giberelico, 100 mg L -1 de cinetina mas 200 mg L -1 de acido giberelico y 200 mg L -1 de cinetina mas 200 mg L -1 de acido giberelico, aplicados desde la cuarta hasta la ultima mano del racimo. El periodo de formacion del racimo influye sobre el tiempo de llenado, el peso del racimo y del tallo, el numero de manos, el numero de frutos por mano y el tamano del fruto, dependiendo de la posicion que ocupa en el racimo, asi como la vida poscosecha, la perdida de masa, el color de la cascara, el pH, el contenido de solidos solubles y la acidez valorable de pulpa. Citoquinina y giberelina, en la forma que fueron aplicadas no influyeron en la produccion, calidad, tamano de y rendimiento fruta. La posicion en el racimo tuvo una fuerte influencia en el tamano y numero de frutos por mano.

CHARACTERISTICS OF BANANA FRUITS (Musa spp. AAA, CV. NANICA) TREATED WITH CYTOKININ AND GIBBERELLIN