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Effect of shoot orientation on vegetative growth, yield parameters and berry composition in grapevine (Vitis vinifera L.)

Article number
1157_2
Pages
11 – 16
Language
English
Abstract
A trellis system with a canopy divided in two vertical directions can present higher yields than single canopies; nevertheless, downward shoots can have lower growth, xylem hydraulic conductivity and leaf stomatal conductance than upward shoots.
The main objective of this study was to evaluate the effect of shoot orientation on vegetative growth, yield parameters and berry composition in three cultivars: ‘Merlot’, ‘Syrah’ and ‘Cabernet Sauvignon’ in the Itata valley, Biobío Region.
The trial was carried out in a commercial vineyard of ‘Merlot’, ‘Syrah’ and ‘Cabernet Sauvignon’. Vegetative, yield and berry parameters were evaluated.
The results confirm that downward shoot positioning reduces vegetative growth, but that leaf area is not affected.
Yield is reduced in downward shoots.
The concentration of anthocyanins and flavonols in the skin are not affected by downward shoot positioning.
A lack of differences in must characteristics and berry phenolic composition between upwards and downwards shoots would allow for simultaneous harvest.

Publication
IX International Symposium on Grapevine Physiology and Biotechnology
Authors
M. Hidalgo, R. Henríquez, R. Merino, A. Chandía, I. Serra
Keywords
trellis system, Scott Henry, anthocyanins, flavonols, upward shoots, downward shoots
Full text
https://doi.org/10.17660/ActaHortic.2017.1157.2
Online Articles (61)
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