Macro scale analysis of Syrah vineyards under winter growing cycles: Agronomical and ecophysiological responses



Título del documento: Macro scale analysis of Syrah vineyards under winter growing cycles: Agronomical and ecophysiological responses
Revista: Scientia Agricola
Base de datos: PERIÓDICA
Número de sistema: 000455499
ISSN: 0103-9016
Autores: 1
2
2
3
4
4
2
4
2
Instituciones: 1Universidade Federal de Lavras, Departamento de Agricultura, Lavras, Minas Gerais. Brasil
2Empresa Brasileira de Pesquisa Agropecuaria, Uva e Vinho, Caldas, Minas Gerais. Brasil
3Universidade Federal do Vale do Sao Francisco, Petrolina, Pernambuco. Brasil
4Universidade Federal de Lavras, Departamento de Ciencia do Solo, Lavras, Minas Gerais. Brasil
Año:
Volumen: 78
Número: 6
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, analítico
Resumen en inglés In Southeast Brazil, the change of grape harvest from wet summer to dry winter through double-pruning management has improved the quality of wines, currently denominated winter wines. In order to better understand the influences of soil, macroclimate, and vineyard management in winter wines, we investigated seven vineyards in the states of Minas Gerais (Três Corações – TC, Três Pontas – TP, Cordislândia – COR, São Sebastião do Paraíso – SSP and Andradas – AND) and São Paulo (Itobi – ITO and Espirito Santo do Pinhal – PIN) during three consecutive growing seasons. The vineyards are located in warm temperate zones and grouped in four soil types: Acrudox in TC, AND and SSP, Hapludox in TP; Hapludult in AND and PIN; Eutrudept in ITO. The high clay content (> 35 %) observed in all soil types, associated to low evapotranspiration demand, avoided the occurrence of severe water stress, as observed by the high values of leaf and stem water potential, stomatal conductance, photosynthesis, and transpiration. Differences in vigor were more related to vineyard management and did not affect grape composition. Among vineyards, parameters for berry quality from ITO, such as sugar and acidity, were more associated to high soil sand content and winter temperature. No significant differences were found in anthocyanins and total phenols of berries among vineyards, suggesting that the high thermal range and low precipitation during autumn-winter, historically observed in all municipalities, seemed to be the main factor for improvement of phenolic compounds
Disciplinas: Agrociencias,
Biología,
Química
Palabras clave: Plantas para uso industrial,
Fisiología vegetal,
Química de alimentos,
Vitis vinifera,
Viñedos,
Uva,
Ecofisiología,
Clima,
Composición química
Keyword: Plants for industrial use,
Plant physiology,
Food chemistry,
Vitis vinifera,
Vineyards,
Grape,
Ecophysiology,
Climate,
Chemical composition
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