Berry polyphenols and climatic variability in 'Nebbiolo' grapes

T. La Iacona, M. Sanna, F. Spanna, A. Schubert

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Climate has an important impact on grape and wine qualitative parameters. Experiments in controlled conditions have shown that the major climatic factors affecting polyphenol accumulation are radiative and thermal conditions; in particular, high temperatures inhibit anthocyanin formation and modify the composition of the anthocyanin fraction. The aim of this study was to compare climatic data and berry composition throughout a ten-year period, in order to explore the relationships between phenolic compounds concentration in 'Nebbiolo' grapes and climatic trends. Phenolic compounds concentration was monitored during the 2000-2009 period at four vineyard sites in Piedmont. Meteorological data were collected in the study areas and bioclimatic indexes were calculated. A qualitative and climatic dataset was created and correlation analysis was carried out. The results show that bioclimatic indexes linked to temperature have the highest impact on anthocyanin and flavonoid concentration, while little effects of global light radiation and of rainfall were observed.

Original languageEnglish
Title of host publicationXXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010)
Subtitle of host publicationInt. Symposium on the Effect of Climate Change on Production and Quality of Grapevines and their Products
PublisherInternational Society for Horticultural Science
Pages287-298
Number of pages12
ISBN (Print)9789066050907
DOIs
Publication statusPublished - Mar 31 2012
Externally publishedYes

Publication series

NameActa Horticulturae
Volume931
ISSN (Print)0567-7572

Keywords

  • Anthocyanins
  • Bioclimatic indexes
  • Flavonoids
  • Fruit quality
  • Meteorological data

ASJC Scopus subject areas

  • Horticulture

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  • Cite this

    La Iacona, T., Sanna, M., Spanna, F., & Schubert, A. (2012). Berry polyphenols and climatic variability in 'Nebbiolo' grapes. In XXVIII International Horticultural Congress on Science and Horticulture for People (IHC2010): Int. Symposium on the Effect of Climate Change on Production and Quality of Grapevines and their Products (pp. 287-298). (Acta Horticulturae; Vol. 931). International Society for Horticultural Science. https://doi.org/10.17660/ActaHortic.2012.931.32