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Characterization of Vitis vinifera L. subspecies sylvestris (Gmelin) Hegi in the Ebro river Basin (Spain)

AuthorsOcete Rubio, Rafael; Arroyo García, R.; Morales, M. L.; Cantos, Manuel ; Gallardo Cano, A.; Pérez Izquierdo, Mª Á.; Gómez Parrales, Isidoro; López Martínez, Mª Ángeles
Issue Date2011
PublisherBundesforschungsanstalt für Rebenzüchtung Geilweilerhof
CitationVitis - Journal of Grapevine Research 50(1): 11-16 (2011)
AbstractA wild grapevine population of 76 vines of Vitis vinifera L. subspecies sylvestris (Gmelin) Hegi was found along the Iregua river valley (Northeastern Spain), located in the Ibérica mountain-range. The characterization of this phytogenetic resource was based on an ampelographic description of the male and female individuals and an evaluation of their sanitary state. This shows that the imported North American downy and powdery mildews are the main pathogens, but no symptoms caused by phylloxera on roots were found. Different degrees of infestation caused by Eryophid mites, Colomerus vitis and Calipitrimerus vitis, were also registered on leaves. On the other hand, the red wines obtained show an alcoholic degree situated between 8.5 and 10.8, pH around 3.5 and a high intensity of colour, between 10.2 and, 11.3. The vinegar had only 3.5° of acetic acid. Its phenolic composition is similar to those reported from red and Sherry vinegars produced from cultivars. The genetic analysis based on 18 samples, using 16 nuclear microsatellites, shows a low genetic diversity (He = 0.45). This might be due to inbreeding caused by mating among siblings in this isolated population. The genetic comparison with the allowed cultivars of this Guarantee of Origin showed two distinct gene pools. So it indicated that there is no genetic contribution of these native vines to current instead of actual local varieties. It is necessary to preserve this phytogenetic resource to be used in breeding programs and to restore its destructed habitats by human different impacts.
Identifiersissn: 0042-7500
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