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Articles

USING IRRIGATION STRATEGY TO MANIPULATE THE HORMONAL PROFILE OF ‘CHARDONNAY’ GRAPEVINES AND IMPROVE THE GRAPE QUALITY UNDER COOL CLIMATE CONDITIONS

Article number
1038_14
Pages
129 – 136
Language
English
Abstract
The relationships among soil and plant water status, plant physiology and the hormonal profiles associated with it, were analyzed in leaves and berries from ‘Chardonnay’ cultivar.
Data was collected during 2006 and 2007 growing seasons.
The field trial consisted in seven irrigation treatments: control (non-irrigated), plus three water levels (100, 50 and 25% of crop evapotranspiration) combined with two timings of irrigation imposition (fruit set and veraison). The hormonal profile indicated a direct relationship between ABA and climatic factors.
ABA was likely catabolized by conjugation to form ABA-GE in treatments under higher levels of water deficit, while in treatments with high water status, the oxidation pathway leading to DPA or PA was likely preferred.
The multivariate analysis showed that soil and plant water status were well correlated.

Publication
Authors
G. Balint, A.G. Reynolds
Keywords
plant hormones, ABA, catabolites
Full text
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