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Environmental and genetic variation of phenolic compounds in grapes (vitis vinifera) from northwest Spain

AuthorsVilanova de la Torre, María del Mar ; Santalla Ferradás, Marta ; Masa Vázquez, Antón
Issue Date2009
PublisherCambridge University Press
CitationJournal of Agricultural Science 147: 683- 697 (2009)
AbstractThe effects of cultivars and environment on phenolic composition were analysed in a 7-year experiment comprising 18 grape cultivars (10 red, 8 white) in Spain. A total of 37 flavonoids (14 anthocyanins in red cultivars; 14 flavonols and 9 dihydroflavonols in white cultivars) were analysed by high performance liquid chromatography (HPLC). Significant differences between years were observed for most of the compounds (11 of the 14) studied in red cultivars and seven compounds in white cultivars. A significant year × cultivar interaction was observed for some of the flavonoids studied. All the phenolic compounds determined showed significant differences among grape cultivars. A high coefficient of variation was found for five flavonoid compounds: dihydroquercetin-3-glycoide, dihydrokaempferol-3-glycoside, kaempferol-3- glycoside, quercetin-3-glucoside and kaempferol-3-rhamnoside. Principal component analysis (PCA) of the variation observed in the phenolic compounds identified four relatively compact groups for the white and red grape cultivars. It was found that the variation of the phenolic composition among years for white grape cultivars was higher than for red cultivars. Stable profiles between years were found for Sousón, Garnacha, Caio Tinto and Verdejo Negro. These results also indicate that the effect of year on grape phenolic composition was less than that of cultivar.
Publisher version (URL)http://dx.doi.org/10.1017/S0021859609990141
Identifiersdoi: 10.1017/S0021859609990141
issn: 0021-8596
e-issn: 1469-5146
Appears in Collections:(MBG) Artículos
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