Plant growth regulators on the pre-harvest period of 'Pêra' oranges

Ciência Rural

Isolina Maria Leite De Almeida¹  Elizabeth Orika Ono¹  João Domingos Rodrigues¹ 

[1] ,Universidade Estadual Paulista Instituto de Biociências Departamento de BotânicaBotucatu SP ,Brasil

关键词: Citrus sinensis;    internal quality;    plant growth regulators;    residue;    Citrus sinensis;    reguladores vegetais;    maturação;    resíduo;   

DOI  :  10.1590/S0103-84782008000300011

来源: SciELO

【 摘 要 】

This research evaluated the effects of auxins and gibberellins applied at pre-harvest on the quality of orange juice. Orange trees, Citrus sinensis Osbeck, cv. 'Pêra' were sprayed in three applications, at 45-day intervals, with the following treatments: GA3 + 2,4-D at 12.5mg L-1 each; GA3 + 2,4-D at 25mg L-1; GA3 + 2,4-D at 37.5mg L-1; GA3 + NAA at 12.5mg L-1; GA3 + NAA at 25mg L-1; GA3 + NAA at 37.5mg L-1; NAA + 2,4-D at 12.5mg L-1; NAA + 2,4-D at 25mg L-1; NAA + 2,4-D at 37.5mg L-1, and a control. The treatments did not change juice quality, and showed no plant growth regulator residues 110 days after the last application in every case below 0.05mg L-1.

【 授权许可】

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