| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000456226 |
| ISSN: | 0103-9016 |
| Autores: | Sánchez, Ramón1 García, María-Rosa González1 Vilanova, Mar2 Rodríguez Nogales, José-Manuel1 Martín, Pedro1 |
| Instituciones: | 1Universidad de Valladolid, Departamento de Producción Vegetal y Recursos forestales, Palencia, Valladolid. España 2Consejo Superior de Investigaciones Científicas, Misión Biológica de Galicia, Pontevedra, Vigo. España |
| Año: | 2021 |
| Volumen: | 78 |
| Número: | 2 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Water deficit and iron nutritional deficiency (iron chlorosis) are frequent environmental stresses affecting grapevine production in the Mediterranean region. The objectives of this work were (i) to study the combined effects of both stresses on aromatic profile of Tempranillo grapes, occurring simultaneously in the vineyard, and (ii) to evaluate the viability of foliar chlorophyll content at veraison (Chl) to early assess aromatic quality potential of grapes in those conditions. Twenty non-irrigated vineyard subzones (10 m × 10 m each), affected and non-affected by iron chlorosis, were monitored in Ribera del Duero Appellation of Origin (North-Central Spain) during two consecutive seasons. Factorial ANOVA was performed to study the effects of predawn leaf water potential and Chl measured at veraison on the must composition parameters and, specifically, on the concentrations of free and bound aromatic compounds. Water deficit tended to increase color intensity and extractable anthocyanin content of the grapes, whereas the incidence of iron deficiency enhanced total phenolic compound content within subzones with better water status. More water or iron stressed subzones restricted C6-alcohols contents than less stressed subzones. Without significant effects on vine vigor, yield or berry size, the incidence of iron chlorosis increased the concentrations of some specific terpenes, C13-norisoprenoids, volatile acids and volatile phenols. These results showed that low to moderate iron stress can have positive effects on grape aromatic quality, and demonstrated that Chl can be a useful tool in precision viticulture to map the aromatic potential within rainfed vineyards affected by iron chlorosis |
| Disciplinas: | Agrociencias, Biología |
| Palabras clave: | Plantas para uso industrial, Fitoquímica, Uva, Vitis vinifera, Clorofila, Compuestos volátiles, Estrés hídrico |
| Keyword: | Plants for industrial use, Phytochemistry, Grape, Vitis vinifera, Chlorophyll, Volatile compounds, Water stress |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
