Marallo, Nadia (2015) Climate change: Anti-transpirant effects on grape physiology and berry and wine composition (Vitis Vinifera L.). [Tesi di dottorato]


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Item Type: Tesi di dottorato
Resource language: English
Title: Climate change: Anti-transpirant effects on grape physiology and berry and wine composition (Vitis Vinifera L.)
Date: 30 March 2015
Number of Pages: 97
Institution: Università degli Studi di Napoli Federico II
Department: Agraria
Scuola di dottorato: Scienze agrarie e agroalimentari
Dottorato: Scienze e tecnologie delle produzioni agro-alimentari
Ciclo di dottorato: 27
Coordinatore del Corso di dottorato:
Date: 30 March 2015
Number of Pages: 97
Keywords: Anti-transpirant; berry composition; berry sugar content; alcohol content; climate change.
Settori scientifico-disciplinari del MIUR: Area 07 - Scienze agrarie e veterinarie > AGR/03 - Arboricoltura generale e coltivazioni arbore
Aree tematiche (7° programma Quadro): BIOTECNOLOGIE, PRODOTTI ALIMENTARI E AGRICOLTURA > Produzione sostenibile e gestione delle risorse biologiche della terra, della foresta e dell'ambiente acquatico
BIOTECNOLOGIE, PRODOTTI ALIMENTARI E AGRICOLTURA > "Fork to farm" - Prodotti alimentari (inclusi prodotti ittici), salute e benessere
Date Deposited: 07 Apr 2015 08:14
Last Modified: 15 May 2016 01:00
DOI: 10.6092/UNINA/FEDOA/10304

Collection description

Plant growth, yield and quality are highly dependent on climate. In the last few decades the trend of increasing global temperatures has affected the accumulation of sugars in berries and hence the degree of alcohol in resultant wines. Therefore numerous studies have considered different agronomic practices that limit photosynthetic activity. The aim of our study was to evaluate the effect of a natural anti-transpirant on grapevine physiology and berry and wine composition on different cultivars. In 2013 and 2014, in South Italy and Souther Australia, Aglianico and Falanghina, Shiraz and Semillon vines were treated at veraison with the anti-transpirant Vapor Gard® (T) and compared with a control (C) sprayed just with water. A bunch thinning (BT) treatment was also applied to both the Vapor Gard® treatment and the control. For each treatment was assessed vegetative response (pruning weight) and production (production and number of bunches per plant, TSS, pH, TA, polyphenols, anthocyanins) of individual varieties. Consideration was also the effectiveness of the film terpene that has come to form on the leaves, limiting gas exchange, through measurements of net photosynthesis and transpiration (LI-6400). The results demonstrate that the application of anti-transpirant has reduced assimilation rate (A), transpiration rate (E), stomatal conductance (gs), sugars berries accumulation (TSS) and wine alcohol degrees (% vol.). No significant differences between treatments were observed for other berry and wine compositional measures taken between cultivars. This method may be a useful tool to reduce berry sugar content which can result in lower alcohol content in wines.


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