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Impact of clonal variability in Vitis vinifera cabernet franc on grape composition, wine quality, leaf blade stilbene content, and downy mildew resistance

AutorVan Leeuwen, Cornelis; Roby, Jean-Philippe; Alonso-Villaverde Iglesias, Virginia ; Gindro, Katia
Fecha de publicación2013
EditorAmerican Chemical Society
CitaciónJournal of Agricultural and Food Chemistry 61 (1): 19- 24 (2013)
ResumenIn this study, 10 clones of Vitis vinifera Cabernet franc (not yet commercial) have been phenotyped on precocity, grape composition, and assessment of wine quality made by microvinification in 2008-2010. Additionally, two original criteria have been considered: concentration of 3-isobutyl-2- methoxypyrazine (IBMP) in grapes and wines (the green bell pepper flavor) and resistance of grapevines to downy mildew (Plasmopara viticola) by stilbene quantification upon infection. Precocity of veraison varied up to four days at veraison. Berry size and yield were highly variable among clones. However, these variables were not correlated. Tanins and anthocyanins varied among clones in grapes and wines. Variations in grape and wine IBMP were not significant. Some clones showed lower susceptibility for downy mildew on leaves. Lower susceptibility was linked to a higher production of stilbenic phytoalexins involved in downy mildew resistance mechanisms.
Versión del editorhttp://dx.doi.org/10.1021/jf304687c
URIhttp://hdl.handle.net/10261/116530
DOI10.1021/jf304687c
Identificadoresdoi: 10.1021/jf304687c
issn: 0021-8561
e-issn: 1520-5118
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