Elicitor and nitrogen applications to Garnacha, Graciano and Tempranillo vines: Effect on grape amino acid composition

  1. Gutiérrez-Gamboa, G. 1
  2. Portu, javier 1
  3. López, Rosa 1
  4. Santamarıa, Pilar 1
  5. Garde Cerdán, Teresa 1
  1. 1 Instituto de Ciencias de la Vid y del Vino
    info

    Instituto de Ciencias de la Vid y del Vino

    Logroño, España

    ROR https://ror.org/01rm2sw78

Revista:
Journal of the Science of Food and Agriculture

ISSN: 0022-5142

Año de publicación: 2017

Tipo: Artículo

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DOI: 10.1002/JSFA.8725 SCOPUS: 2-s2.0-85033780201 GOOGLE SCHOLAR

Otras publicaciones en: Journal of the Science of Food and Agriculture

Repositorio institucional: lockAcceso abierto Editor

Resumen

BACKGROUND: Elicitors and nitrogen foliar applications to vineyards could regulate grape nitrogen composition, which has an important effect on grape and wine quality. Thus the aim of this research was to study the effect of foliar elicitor treatments, methyl jasmonate (MeJ) and yeast extract (YE), and foliar nitrogen applications, urea (Ur) and phenylalanine (Phe), to Garnacha, Graciano and Tempranillo vines on grape amino acid composition. RESULTS: The results showed that elicitor and nitrogen foliar applications to Garnacha and Tempranillo grapevines decreased the must amino acid concentration. However, Phe application to these two grapevines increased the must Phe content. The treatments applied to Graciano grapevines barely effected the grape amino acid content. According to the percentage of variance attributable, the variety had a higher impact on the must amino acid composition than the treatments and their interaction, except in certain amino acids such as Phe. CONCLUSION: The influence of elicitor and nitrogen foliar applications to grapevines on grape amino acid concentration was strongly conditioned by the variety. © 2017 Society of Chemical Industry.