EFFECT OF DOSE APPLICATION OF AUXIN (2-NAPHTHOXY-ACETIC ACID) IN THE FLOWER CLUSTER OF TOMATO (SOLANUM LYCOPERSICUM L.) IN PROTECTED CONDITIONS AND HYDROPONICS
Low yields of the tomato (Solanum lycopersicum L.) produced under conditions in the humid tropics requires implementing techniques that contribute to the increase in yields. The objective of the study was to evaluate the effect of a dose of auxin (2-naphthoxy-acetic acid) applied to the flower cluster of tomato in hydroponics under protected conditions. The experiment was conducted in Division Academic of Agricultural Sciences of the Juarez Autonomous University of Tabasco, Tabasco Mexico. In a structured tropical type, January to April 2010, side shoots were used as seedlings, five doses of the auxin were applied: 0 (witness), 20, 30, 40, 50 and 60 mg/L. This was to evaluate weight, % fruit set and size (equatorial and polar diameter) of the fruit. According to the data, significant difference (P≤0.5) for all variables evaluated, being significantly equal doses 30 and 40 mg/L for the average weight of the fruit; for the % fruit set were significantly equal doses 20, 30, 40 mg/L; for the equatorial diameter 40 mg/L dose was significantly different from the others; and for the polar diameter variable no significant difference was found with regard to the witness. Thus we concluded that the dose of 40 mg/L was better (76.29 g, 78.40%, 45.38 mm and 62.84 mm; for variables weight average from the fruits, the % fruit set, equatorial diameter and polar diameter, respectively), compared to the witness (65.87 g, 64.02%, 40.96 mm and 62.80 mm; for variables weight average from the fruits, % fruit set, equatorial diameter and polar diameter, respectively).
Estrada-Botello, M.A., Gómez-Méndez, E., de la Cruz-Lázaro , E., Martínez-Moreno, E. and Robledo-Torres , V. (2012). EFFECT OF DOSE APPLICATION OF AUXIN (2-NAPHTHOXY-ACETIC ACID) IN THE FLOWER CLUSTER OF TOMATO (SOLANUM LYCOPERSICUM L.) IN PROTECTED CONDITIONS AND HYDROPONICS. Acta Hortic. 947, 355-359
growth regulators, soilless culture, Solanaceae