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IVES 9 IVES Conference Series 9 El medio natural de Chile como factor de adaptación de la vid

El medio natural de Chile como factor de adaptación de la vid

Abstract

Chile, junto con Australia, EE.UU., Sudáfrica, Argentina y Nueva Zelanda constituye el grupo de países del nuevo mundo vitivinícola. Todos ellos en conjunto han experimentado en la última década un sostenido crecimiento en la participación del mercado internacional de vinos, destacándose en el grupo Australia, EE.UU. y Chile. En 1990, las exportaciones de Australia y EE.UU sobrepasaban levemente los US$ 100 millones, Chile representaba la mitad de esta cantidad (Cuadro 1), en cambio en 1998, los tres países presentan cifras similares, sobrepasando levemente los US$ 500 millones.
De acuerdo al diario financiero “The Economist” (1999), el conjunto de los países del nuevo mundo y en particular el de Australia, EE.UU. y Chile, se caracteriza por una industria vitivinícola muy concentrada. En efecto, sólo cuatro compañías dominan el 80% del mercado australiano, en EE.UU., las cinco más grandes tienen el 62% del mercado y en Chile, las cinco principales poseen el 50%. El crecimiento en la participación de mercado de estas compañías globales es reflejo de sus presupuestos de promoción y su habilidad para proveer grandes cantidades de vino a los supermercados. Estas empresas se han caracterizado por invertir en tecnología e innovación, lo que les permite expresar la peculiaridad de cada una de las variedades de vid, o de la mezcla que vinifica y que destacan en sus etiquetas.
En el caso particular de Chile, los primeros indicios de la reconversión de su industria vitivinícola se pueden establecer a partir del año 1986 y son consecuencia del éxito de pequeñas partidas iniciales de vinos finos destinados a los mercados externos, particularmente de Latinoamérica. En aquella época se desarrollo sólo en las principales empresas del rubro un nuevo impulso de plantaciones de variedades tintas y blancas, de probada fineza y calidad, fundamentalmente Cabernet sauvignon, Merlot (Carménère), Chardonnay y Sauvignon blanc (vert). Por el contrario, el resto de la industria se encontraba sumida en una de las más profundas crisis que ha tenido que experimentar Chile, caracterizada por una fuerte disminución de la superficie global de los viñedos.

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Publication date: February 24, 2022

Issue: Terroir 2000

Type: Article

Authors

Ph. Pszczólkowski T.

Departamento de Fruticultura y Enología
Facultad de Agronomía e Ingeniería Forestal
Pontificia Universidad Católica de Chile
Casilla 306-22
Santiago, Chile

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IVES 9 IVES Conference Series 9 El medio natural de Chile como factor de adaptación de la vid

El medio natural de Chile como factor de adaptación de la vid

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The origin and the discovery of “terroir”

Le mot “terroir” dérive du latin “terra”, mais déjà les Romains l’indiquaient comme “locus” ou”loci”, c’est-à-dire un lieu ayant le “genius”destiné à la production d’un produit d’excellente qualité.

OPTIMIZATION, VALIDATION AND APPLICATION OF THE EPR SPIN-TRAPPING TECHNIQUE TO THE DETECTION OF FREE RADICALS IN CHARDONNAY WINES

The aging potential of Burgundy chardonnay wines is considered as quality indicator. However, some of them exhibit higher oxidative sensitivity and premature oxidative aging symptoms, which are potentially induced by no-enzymatic oxidation such as Fenton-type reaction (Danilewicz, 2003). This chemical mechanism involves the action of transition metal, native phenolic compounds and oxygen which promote the generation of highly reactive oxygen species (ROS) such as hydroxyl radicals (OH) or 1-hydroxyethyl radicals (1-HER) from oxidation of ethanol. Such mechanism is involved in the radical oxidation occurring during bottle aging. According to Elias et al.,(2009a), the 1-HER is the most abundant radical in forced oxidation treated wines. Consequently, understanding its evolution kinetic in dry white wines is of great importance.

La zonazione della valle d’Illasi (Verona)

In the bottom of Val d’Illasi (Verona province), one of the major valleys which passes through the Lessini mountains, viticulture is widely extended. In the territory belonging to Illasi and Tregnago villages, which includes ca. 1100 ha of vineyards, devoted to produce Soave and Valpolicella DOC wines, an experimental survey was conducted on a network of twenty five reference vineyards.

The rootstock, the neglected player in the scion transpiration even during the night

Water is the main limiting factor for yield in viticulture. Improving drought adaptation in viticulture will be an increasingly important issue under climate change. Genetic variability of water deficit responses in grapevine partly results from the rootstocks, making them an attractive and relevant mean to achieve adaptation without changing the scion genotype. The objective of this work was to characterize the rootstock effect on the diurnal regulation of scion transpiration. A large panel of 55 commercial genotypes were grafted onto Cabernet Sauvignon. Three biological repetitions per genotype were analyzed. Potted plants were phenotyped on a greenhouse balance platform capable of assessing real-time water use and maintaining a targeted water deficit intensity. After a 10 days well-watered baseline period, an increasing water deficit was applied for 10 days, followed by a stable water deficit stress for 7 days. Pruning weight, root and aerial dry weight and transpiration were recorded and the experiment was repeated during two years. Transpiration efficiency (ratio between aerial biomass and transpiration) was calculated and δ13C was measured in leaves for the baseline and stable water deficit periods. A large genetic variability was observed within the panel. The rootstock had a significant impact on nocturnal transpiration which was also strongly and positively correlated with maximum daytime transpiration. The correlations with growth and water use efficiency related traits will be discussed. Transpiration data were also related with VPD and soil water content demonstrating the influence of environmental conditions on transpiration. These results highlighted the role of the rootstock in modulating water deficit responses and give insights for rootstock breeding programs aimed at identifying drought tolerant rootstocks. It was also helpful to better define the mechanisms on which the drought tolerance in grapevine rootstocks is based on.

Characterization of non-cultivated wild grapevines in Extremadura (Spain) 

Several Eurasian wild grapevine populations were found along Extremadura region (southwestern Spain). For conservation and study, one individual from four different populations (named L1, L2, L5 and L6) was vegetatively propagated and planted at Instituto de Investigaciones Agrarias Finca La Orden (CICYTEX), Badajoz. The aim of the present work was to characterize those conserved individuals from four different populations based on both an ampelographic description and a molecular analysis. Three vines per individual were studied.