RT info:eu-repo/semantics/article
T1 Assessment of grape volatile composition using fluorescence indices of leaves in vineyards affected by iron chlorosis
A1 González García, María Rosa
A1 Sánchez, Ramón
A1 Vilanova, Mar
A1 Martín Peña, Pedro
A2 Lincoln Zotarelli
K1 Multiplex
K1 anthocyanin
K1 aroma
K1 chlorophyll
K1 flavonol
K1 5102.01 Agricultura
K1 3309.29 Vino
AB Multiplex 330 (MX) is a portable, non-invasive fluorescence sensor that provides different multiparametric indices that are sensitive to the concentration of chlorophylls, flavonols, and anthocyanins on the leaf surface. This study investigated the use of these indices to assess the variability on free volatile composition of grapes (Vitis vinifera L.) in the field as well as other components of their quality potential in vineyards affected by iron deficiency chlorosis (IDC). Twenty non-irrigated Tempranillo/110 Richter vineyard subzones from non-affected to moderately affected by IDC were monitored in Ribera del Duero area (Spain) during two seasons. The results indicated that MX can characterize the spatial variation of leaf pigment concentrations, agronomic performance, and grape quality in vineyards affected by IDC. The MX indices measured at the leaf level close to harvest had better predictive values for the concentrations of free alcohols, volatile acids, C13-norisoprenoids, esters and acetates in the must than vine vigor, size or degree of technological maturity of the grapes. Our study demonstrates that the MX indices to estimate leaf pigment concentrations can be helpful to assess the technological maturity and free volatile composition of wine grapes in vineyards affected by IDC; nevertheless, the efficacy of the indexes may vary according to the year season.
SN 1678-992X
YR 2023
FD 2023
LK https://uvadoc.uva.es/handle/10324/65799
UL https://uvadoc.uva.es/handle/10324/65799
LA eng
NO Scientia Agricola, vol. 80, 2023
NO Producción Científica
DS UVaDOC
RD 04-dic-2024