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Effect of water deficits and season on berry development and composition of Cabernet Sauvignon (Vitis vinifera L.) grown in a hot climate

Effect of water deficits and season on berry development and composition of Cabernet Sauvignon... IntroductionThere is a rising trend to impose deficit irrigation in vineyards of the irrigated inland growing districts of Australia to reduce vigour and improve the quality of winegrapes (Kriedemann and Goodwin ). The most common approach is the application of regulated deficit irrigation (RDI) where the irrigation amount is reduced, generally during the period between berry set and veraison. Reductions to irrigation at this particular phenological stage slow canopy development and result in reduction of berry size (McCarthy , McCarthy et al. ). Seasonal variation can significantly alter the relationship between source characteristics (leaf area and net canopy photosynthesis) and sink carbohydrate partitioning into berries, stems, trunk and root. Similarly, the degree of soil water deficit can have a significant impact on carbon assimilation and carbohydrate partitioning to the various sinks (Pellegrino et al. ).Leaf water potential is reduced when grapevines are subjected to water stress (Williams and Aroujo , Bota et al. , Cifre et al. ). Such reduction often results in reduced stomatal conductance (gs) (Escalona et al. ), transpiration (T), photosynthesis (A) (Rodrigues et al. , Flexas et al. , Iacono and Sommer , Bota et al. ) and sugar accumulation by the grape berry (Smart http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australian Journal of Grape and Wine Research Wiley

Effect of water deficits and season on berry development and composition of Cabernet Sauvignon (Vitis vinifera L.) grown in a hot climate

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References (110)

Publisher
Wiley
Copyright
© 2017 Australian Society of Viticulture and Oenology Inc.
ISSN
1322-7130
eISSN
1755-0238
DOI
10.1111/ajgw.12274
Publisher site
See Article on Publisher Site

Abstract

IntroductionThere is a rising trend to impose deficit irrigation in vineyards of the irrigated inland growing districts of Australia to reduce vigour and improve the quality of winegrapes (Kriedemann and Goodwin ). The most common approach is the application of regulated deficit irrigation (RDI) where the irrigation amount is reduced, generally during the period between berry set and veraison. Reductions to irrigation at this particular phenological stage slow canopy development and result in reduction of berry size (McCarthy , McCarthy et al. ). Seasonal variation can significantly alter the relationship between source characteristics (leaf area and net canopy photosynthesis) and sink carbohydrate partitioning into berries, stems, trunk and root. Similarly, the degree of soil water deficit can have a significant impact on carbon assimilation and carbohydrate partitioning to the various sinks (Pellegrino et al. ).Leaf water potential is reduced when grapevines are subjected to water stress (Williams and Aroujo , Bota et al. , Cifre et al. ). Such reduction often results in reduced stomatal conductance (gs) (Escalona et al. ), transpiration (T), photosynthesis (A) (Rodrigues et al. , Flexas et al. , Iacono and Sommer , Bota et al. ) and sugar accumulation by the grape berry (Smart

Journal

Australian Journal of Grape and Wine ResearchWiley

Published: Jun 1, 2017

Keywords: ; ; ; ;

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