Effect of irrigation regime on anthocyanin content and antioxidant activity of Vitis vinifera L. cv. Syrah grapes under semiarid conditions

Abstract

Irrigation proved to be an effective technique to control anthocyanin content in Syrah grapes under semiarid conditions. However, anthocyanin accumulation pattern should be considered by winemakers to appropriately select harvest time for improved wine colour.

Irrigation and Leaf Removal Effects on Polyphenolic Content of Grapes and Wines Produced from cv. ‘Agiorgitiko’ (<i>Vitis vinifera</i> L.)

“…Finally, the different treatments seem to have no effect on the antioxidant activity of neither seeds nor skins (Table 2), consistent with the results reported by Kyraleou et al, (2016a) where no significant differences were detected concerning the antioxidant activity among the irrigated and non-irrigated samples, indicating that irrigation did not significantly affect this parameter.…”

“…Irrigation had no effect on berry size, in contrast with studies showing that irrigation increases berry weight at harvest (Koundouras et al, 2009). Moreover, Kyraleou et al (2016a) observed a significant trend towards smaller berries in non-irrigated vines when compared with the full-irrigated ones. Similar results on the influence of water deficit on berry growth were reported previously for 'Shiraz' (Ojeda et al, 2001), 'Cabernet Sauvignon' (Robby and Matthews, 2004), 'Cabernet franc' (Matthews and Anderson, 1989) and 'Tempranillo' (Santesteban et al, 2011).…”

“…Similar results on the influence of water deficit on berry growth were reported previously for 'Shiraz' (Ojeda et al, 2001), 'Cabernet Sauvignon' (Robby and Matthews, 2004), 'Cabernet franc' (Matthews and Anderson, 1989) and 'Tempranillo' (Santesteban et al, 2011). This reduction was attributed to the decreased cell volume of the pericarp cells in water stressed berries leading to reduced skin cell wall extensibility and, therefore, to a reduced enlargement potential of berries (Kyraleou et al, 2016a). However, water effects on berry components are often contrasting, mainly because of different irrigation volumes and environmental conditions, leading to variations in water availability.…”

Water stress and ripeness effects on the volatile composition of Cabernet Sauvignon wines

“…variety, ripeness at harvest and irrigation practices), are known to influence grape composition . Regarding irrigation, controlled water deficits are a common viticultural practice worldwide, particularly in red grape varieties cultivated in Mediterranean climates because of their well‐known effects on wine . Water deficits positively impact the grape through lower berry sizes, with a concomitant increase in the skin to pulp ratio, concentrating secondary metabolites .…”

“…[1][2][3][4][5][6] Regarding irrigation, controlled water deficits are a common viticultural practice worldwide, particularly in red grape varieties cultivated in Mediterranean climates because of their well-known effects on wine. [7][8][9][10][11][12][13] Water deficits positively impact the grape through lower berry sizes, with a concomitant increase in the skin to pulp ratio, concentrating secondary metabolites. 14 Additionally, a water deficit reduces plant vigour, improves the microclimate of the fruiting zone and, most importantly, increases the activity of the secondary metabolism in grapes, which is mediated by abscisic acid.…”