Data/hora: 10/06/2024 07:34:03

Provedor de dados: 	63	
País: 	Brazil	
Título: 	Abscisic acid and ethephon treatments applied to ‘Verdejo’ white grapes affect the quality of wine in different ways	
Autores: 	González,Raquel; González,María-Rosa; Martín,Pedro.	
Data: 	2018-09-01	
Ano: 	2018	
Palavras-chave: 	Vitis vinifera L.; ABA; Growth regulators; Ripening; Tasting.	
Resumo: 	ABSTRACT: Exogenous ethephon and abscisic acid (ABA) treatments are used worldwide to improve the coloring of red table grapes, but there is little information about their impact on the quality of white grapes and wines. The aim of this work was to evaluate the effects of exogenous ethephon and ABA applications at veraison on the composition of ‘Verdejo’ white grapes, and on the quality of their wines. To attain this objective, a field trial was carried out in a ‘Verdejo’/110 Richter vineyard located in north-central Spain. Two levels of ethephon (0 and 1500 mg L−1) and ABA (0 and 800 mg L−1) were sprayed on clusters at veraison, in a factorial design for three consecutive seasons. Ethephon and ABA had additive effects, decreasing titratable acidity and increasing pH of the must, which could be exploited by accelerating the grape ripening process in cold-climate zones. Nevertheless, each growth regulator affected the composition and sensory analysis of the wines differently. Ethephon treatments produced wines with lower concentration of acids and better flavor quality than those made from untreated plants, while wines with ABA applications tended to have a higher ethanol concentration and poorer aroma quality than controls. The wines submitted to treatments with ethephon obtained the best overall evaluation in the sensory analysis throughout the trial.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500381	
Editor: 	São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"	
Relação: 	10.1590/1678-992x-2017-0177	
Formato: 	text/html	
Fonte: 	Scientia Agricola  v.75 n.5 2018	
Fonte: 	info:eu-repo/semantics/openAccess