Vida útil e qualidade de frutos de tomateiros tratados com paclobutrazol
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Data
2011-08
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Resumo
The application of growth regulators can influence all plant developmental phases, including flowering, development
and maturation of fruits and seeds. In this study, we evaluated the physical and chemical characteristics and shelf
life of tomato fruits from plants treated with Paclobutrazol - PBZ (0, 50 and 100 mg L -1 ) in drench application on
seedlings, at 15 days after sowing. The fruits were analyzed immediately after harvest and after 5, 10, 15 and 20 days of
storage in ambient conditions. The efficiency of treatments and fruit quality were determined by the parameters of
weight loss, firmness, soluble solids (SS), titratable acidity (TA), vitamin C and SS/TA ratio. The experiment was arranged in a 3 x 5
factorial completely randomized design (concentrations of paclobutrazol x days of storage). The applications of
paclobutrazol on tomato seedlings, 15 days after sowing, the concentrations of 50 and 100 mg L -1 had no effect on the
fruit shelf-life of tomato cv. AF 7631. Increasing concentrations of PBZ resulted in lower weight loss, firmness and
acidity of fruits. Soluble solids, vitamin C and SS/TA ratio did not change with increasing concentrations of PBZ.
Fruits, regardless of the PBZ concentrations applied to seedlings, reached twenty days of storage (25 ±2 °C and 75±5%
UR) fit for consumption, although with significant loss of fresh mass, acidity and firmness.
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Solanum lycopersicum L., Maturação, Regulador de crescimento, Solanum lycopersicum L., Growth regulator, Maturation
Citação
SELEGUINI, Alexsander; FARIA JÚNIOR, Max José de Araújo; SENO, Shizuo; SANTOS, Jacira Isepon dos; SILVA, Katiane Santiago da; LEMOS, Odair Lacerda. Vida útil e qualidade de frutos de tomateiros tratados com paclobutrazol. Revista Ceres, Viçosa, v. 58, n. 4, p. 470-475, jul./ago. 2011.