Agronomic characteristics of pumpkin fruits of “Tetsukabuto”hybrid as a function of 2,4-D doses

Flávia Fernandes Ribeiro de Miranda, Ildon Rodrigues do Nascimento, Prínscilla Pâmela Nunes Chaves, Cid Tacaoca Muraishi, Daisy Parente Dourado

Abstract


Due to the short flowering period of the pumpkin hybrid ‘Tetsukabuto’, a poor pollination may influence the fruit production. In thissense, the objective of this study was to evaluate agronomic characteristics of the pumpkin hybrid (Tetsukabuto) as a function of 2,4-D doses as phytohormonal inducer. The experiment was conducted in the field, in a randomized block design with four replications and five plants per plot. It was established with eight treatments, seven of them increasing doses of 2,4-Dichlorophenoxyacetic acid (187.5, 200, 212.5, 225, 237.5, 250 and 262.5 mg L-1) and a control (flowers fertilized with pollen). At 110 days after sowing it was made a fruit harvest, evaluating the following characteristics: yield, fruit mean weight, texture of bark, fruit shape and cycle. The fruits mean weight, yield and days from planting to harvest with the use of 2,4-D were superior to natural pollination. Increasing the dose of 2,4-D resulted in an increase in yield and fruit mean weight until to dose 250 mg L-1. There was a reduction in the cycle culture with increasing in the 2,4-D doses.


Keywords


Cucurbita maxima, Cucurbita moschata, phytohormone, yield

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DOI: https://doi.org/10.14295/cs.v8i4.456

Copyright (c) 2018 Flávia Fernandes Ribeiro de Miranda, Ildon Rodrigues do Nascimento, Prínscilla Pâmela Nunes Chaves, Cid Tacaoca Muraishi, Daisy Parente Dourado

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