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Title: Influência da rega da videira (Vitis Vinifera L.) nas relações hidricas, crescimento, quantidade e qualidade da produção
Other Titles: Effects of irrigation on water relations, vegetative growth, yeld and fruit quality on field-grown grapevines (Vitis Vinifera L.)
Author: Santos, Tiago Pedreira dos
Advisor: Lopes, Carlos Antunes
Rodrigues, Maria Lucilia
Keywords: vitis vinifera
composição do bago
microclima do cacho
rega deficitaria
berry composition
cluster microclimate
deficit irrigation
water relations
Defense Date: 2006
Abstract: The present study had the main objective to understand the role developed by water availability in the vine ecophysiology, microclimate, berry quality and yield. This study was carried out in a commercial vineyard at the Centro Experimental de Pegões in the Moscatel and Castelão varieties. The effects of different water treatments in the physiological and agronomical vine parameters were studied. Deficit irrigation treatments, namely the partial rootzone drying (PRD) and deficit irrigation (DI), both with 50% ETc, induced mild water deficits during the ripening period, while FI plants (100% ETc) remained with a high predawn water potential in that period and non-irrigated vines (NI) showed a severe water stress. In PRD treatment we observed an important reduction on vegetative growth compared to DI and FI leading to more open canopies with higher values of radiation and berry temperature comparatively to the other irrigated treatments. PRD and NI showed the highest anthocyanins and phenols accumulation in berries, although no differences in berry sugar accumulation were found between treatments. As a result of the 50 % reduction in the amount of water applied without any significant yield reduction, water use efficiency was double in PRD and DI treatments when compared to FI.
Description: Doutoramento em Engenharia Agronómica - Instituto Superior de Agronomia
Appears in Collections:BISA - Teses de Doutoramento / Doctoral Thesis

Files in This Item:
File Description SizeFormat 
Agradecimentos e resumos impressão.docAgradecimentos e Resumos31,5 kBMicrosoft WordView/Open
Capa definitivaTese impressão.docCapa33,5 kBMicrosoft WordView/Open
Introducao Capítulo I impressão.docIntrodução e Cap. 1183 kBMicrosoft WordView/Open
Capítulo II e III impressão.docCap. 2 e 323 kBMicrosoft WordView/Open
Capítulo IV e V impressão.docCap. 4 e 51,7 MBMicrosoft WordView/Open
Capítulo VI impressão.docCap. 622,5 kBMicrosoft WordView/Open
Nota introdutória impressão.docNota introdut.23,5 kBMicrosoft WordView/Open
Índice impressão.docIndice100,5 kBMicrosoft WordView/Open
Introd ingles.docIntrod. English60 kBMicrosoft WordView/Open
Considerações finais impressão.docConsid. finais76 kBMicrosoft WordView/Open
Final considerations.docFinal consid.30 kBMicrosoft WordView/Open
dos Santos et al impressão.pdfPartial rootzone drying...111,45 kBAdobe PDFView/Open
Jones et al, 2002 impressão.pdfUse of infrared thermography...4,22 MBAdobe PDFView/Open
ms1997 Vitis impressão.pdfEffects of partial root-zone drying...5,51 MBAdobe PDFView/Open
Capítulo III impressão.docCap. 321 kBMicrosoft WordView/Open

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