Growth regulators improve bunch and berry characteristics in 'Niagara Rosada' grape
Among the American table grapes, 'Niagara Rosada' stands out as one of the most consumed in Brazil. This is due to its hardiness and adaptation to diverse environmental conditions. Thus, this study aimed to evaluate the effects of plant growth regulators on bunch and berry physico-chemical characteristics in 'Niagara Rosada' grape. The experiment was conducted in a six-year-old commercial vineyard with plastic cover, located in the municipality of Almirante Tamandaré, State of Paraná, in the South of Brazil, during the crop 2010/2011. The treatments were: thidiazuron (TDZ) 5 mg L-1 and 10 mg L-1, 6-benzylaminopurine (BA) 5 mg L-1 and 10 mg L-1, either alone or in combination with gibberellic acid (GA3) 100 mg L-1 and the control. The growth regulators were applied by dipping the bunches at 14 days after full bloom. The bunches were bagged in TNT (non-woven textile). The harvest was held on 02/16/2011. We evaluated the following parameters: bunch weight, berry weight, rachis weight, berry diameter, width and length of the bunch, number of berries per bunch, number of seeds per berry, soluble solids content (SSC), titratable acidity (TA), pH, and SSC/TA. It is concluded that the treatment with gibberellic acid, combined or not with thidiazuron increased the bunch weight, berry weight, rachis weight, and berry diameter of 'Niagara Rosada'.
Guerios, I.T., Chiarotti, F., Cuquel, F.L. and Biasi, L.A. (2016). Growth regulators improve bunch and berry characteristics in 'Niagara Rosada' grape. Acta Hortic. 1115, 243-248
Vitis labrusca, gibberellic acid, thidiazuron, 6-benzylaminopurine