Data/hora: 04/06/2024 01:15:00

Provedor de dados: 	94	
País: 	Brazil	
Título: 	Foliar carbohydrates content and invertase activity in vines at São Francisco River Valley - Brazil	
Autores: 	Dantas,Barbara França; Ribeiro,Luciana de Sá; Silva,Alexandro Pereira da; Luz,Sara Raquel de Souza.	
Data: 	2005-08-01	
Ano: 	2005	
Palavras-chave: 	Grape; Metabolism; Sugar.	
Resumo: 	The irrigated agriculture at the São Francisco River Valley, Northeast Brazil, shows an increasing production of grapes for winery. Among the wines produced there the one obtained from Vitis vinifera L., cultivar Syrah, stands out due to its adaptation to the climatic conditions of the region. However, little is known about carbohydrates metabolism of vines cultivated in this region. The objective of this work was to evaluate sugar and starch contents and the invertase activity in vines leaves during two consecutive growing seasons. The experiment was carried out at Embrapa Semi-Árido and at Santa Maria Winery, respectively located in Petrolina and Lagoa Grande, Pernambuco-Brazil. Leaves were collected weekly from January to December of 2003 and assessed for reducing sugars, total soluble sugars and starch contents, as well as for acid (AI) and neutral invertases (NI). The results showed that reducing sugars, total soluble sugars and starch contents increased during fruit maturation and are influenced by temperature, radiation and insolation variations. The second growing season showed higher reducing sugars and total soluble sugars content and lower starch content in the leaves than the first one. AI activity was higher than NI activity and these also varied according to weather conditions. During berries ripening, leaves showed higher sugar content and invertase activity, suggesting a higher sugar metabolism and transport during this phase.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452005000200004	
Editor: 	Sociedade Brasileira de Fruticultura	
Relação: 	10.1590/S0100-29452005000200004	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Fruticultura  v.27 n.2 2005	
Fonte: 	info:eu-repo/semantics/openAccess