Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Mais filtros








Base de dados
Intervalo de ano de publicação
1.
J Sci Food Agric ; 99(3): 1358-1365, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30094859

RESUMO

BACKGROUND: Vineyard strategies have recently been developed to combat the effects of global warming on grapevines, which is causing grapes to ripen quickly, excessive sugar accumulation in berries, and high alcohol levels in wines. We evaluate the effectiveness of post-veraison trimming as a means of slowing down sugar accumulation, without modifying phenolic ripening, in Sangiovese vines grown in highly fertile and well watered soil. RESULTS: The removal of about two-thirds of the leaf area by shoot trimming after veraison led to a reduction in sugar content without affecting yield. Total and extractable anthocyanins, skin, and seed tannins showed no significant variation at harvest after the treatment during the three-year trial, while the replenishment of carbohydrates in canes at the end of the trial was negatively affected. CONCLUSIONS: These results indicate that, in highly fertile and well-watered soil, post-veraison trimming may represent a powerful tool for decreasing sugar concentration during harvest without affecting yield or total and extractable phenolic compounds. However, the reduction in starch reserves compared to the control serves as a warning about repeated trimming over the years. © 2018 Society of Chemical Industry.


Assuntos
Produção Agrícola/métodos , Frutas/química , Açúcares/metabolismo , Vitis/metabolismo , Vinho/análise , Antocianinas/análise , Antocianinas/metabolismo , Frutas/crescimento & desenvolvimento , Frutas/metabolismo , Fenóis/análise , Fenóis/metabolismo , Folhas de Planta/crescimento & desenvolvimento , Folhas de Planta/metabolismo , Açúcares/análise , Taninos/análise , Taninos/metabolismo , Vitis/química , Vitis/crescimento & desenvolvimento
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA