terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Qualitative and productive characterization of a minority variety: ‘Branco lexítimo’ in DO Ribeira Sacra (Spain)

Qualitative and productive characterization of a minority variety: ‘Branco lexítimo’ in DO Ribeira Sacra (Spain)

Abstract

The actual climate changes, together with the strong regulation of the European Union and Spanish government, in search of sustainable viticulture, have forced the recovery of minority varieties, expanding the range of grape varieties, as well as the possible development of wines with unique profiles. In the Ribeira Sacra DO (Spain), a comparative study of the agronomic and qualitative behavior of the ‘Branco lexítimo’ variety has been carried out, compared to the majority white variety in the DO: ‘Godello’, located in the same study plot, with identic soil and climatic conditions. The study contemplated the analysis of phenology and leaf water potential, as well as the productive results and the analysis of the must quality, during four seasons: 2018 – 2021. No significant differences in phenology were observed, despite a certain advance of the ‘Godello’ variety, on the contrary, a better leaf water potential has been observed in ‘Branco lexítimo’, even in dry years (2020). Results have shown that ‘Branco lexítimo’ (8,700 kg ha-1) obtain lower yield than ‘Godello’ (12,700 kg ha-1), mainly due to lower number of bunches per plant and average weight, except to 2018 season, where ‘Branco lexítimo’ obtain higher. Similar must quality results were obtained, with no significative difference to sugars, pH, total acidity, malic and tartaric acids. A tendency to greater total acidity, generated by the amount of malic acid, is observed for the ‘Branco lexítimo’ variety, except to 2020, the driest year of the study period. However, must yeast-assimilable nitrogen (YAN) and Free α-Amino Nitrogen (FAN), during the four study seasons, were always higher in ‘Branco lexítimo’, which facilitates a better wine fermentation, improving the expression of all the volatile compounds present in this variety. Despite the lower yields of the ‘Branco lexítimo’ variety, its qualitative improvement and its oenological potential make it a viable alternative in the DO Ribeira Sacra.

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Fandiño M.1*, Pérez-Añón R.2, Vilanova M.3,4, Rodríguez-Febereiro M1, Cancela J.J.1,4

1 GI-1716. Universidade de Santiago de Compostela. Campus Terra, Lugo, Spain
2 Adega Ponte da Boga. Castro Caldelas, Ourense, Spain
3 Consejo Superior de Investigaciones Científicas CSIC- Instituto de Ciencias de la Vid y del Vino (ICVV), Carretera de Burgos, Logroño, Spain
4 CropQuality: Crop stresses and their effects on Quality (USC), Unidad Asociada al CSIC-ICVV

Contact the author*

Keywords

yield 1, YAN 2, Godello 3, temperate climate 4, malic acid 5

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Wine racking in the winery and the use of inerting gases

The O2 uptake in the different winemaking processes is generally considered to be negative for the sensory characteristics of white and rosé wines. Wine racking is a critical point of O2 uptake, as the large surface area of the wine exposed during this operation and the inability to maintain an effective inert gas blanket over it.
The objective was to study O2 uptake during the racking of a model wine without using inert gases and to compare it with the purging of the destination tank with different inert gases.

Read More

Quantifying water use diversity across grapevine rootstock-scion combinations

Vines require proper light levels, temperature, and water availability, and climate change is modifying these factors, hampering yield and quality. Despite the large diversity of rootstocks, varieties, and clones, we still lack knowledge of their combined effects and potential role in a warmer and dryer future. Therefore, we aim to characterize some of the existing diversity of rootstocks and genotypes and their interaction at the eco-physiological level, combining stomatal conductance (gs) and chlorophyll a fluorescence analysis.

Read More

Phenotyping bud break and trafficking of dormant buds from grafted vine

In grapevine, phenology from bud break to berry maturation, depends on temperature and water availability. Increases in average temperatures accelerates initiation of bud break, exposing newly formed shoots to detrimental environmental stresses. It is therefore essential to identify genotypes that could delay phenology in order to adapt to the environment. The use of different rootstocks has been applied to change scion’s characteristics, to adapt and resist to abiotic and biotic stresses[1].

Read More

Ability of lactic acid bacterial laccases to degrade biogenic amines and OTA in wine

Two of the most harmful microbial metabolites for human health that can be present in wines and either fermented or raw foods are biogenic amines (BA) and ochratoxine A (OTA). Winemakers are aware of the need to avoid their presence in wine by using different strategies, one of them is the use of enzymes. Some recombinant laccases have been characterized and revealed as potential tools to degrade these toxic compounds in wine[1], specifically biogenic amines[2].

Read More

Effect of biological control agents on grapevine rhizosphere microbiome and grapevine defenses

Plant diseases are a major obstacle to crop production. The main approaches to battle plant diseases, consist of synthetic chemicals to attack infecting pathogens. However, concerns are increasing about the effects of chemicals in the environment, leading to an increase in the use of biocontrol agents (BCAs), due to their assets, such as, antagonism, and competition. In this study, we tested the hypothesis that the introduction of Bacillus subtilis PTA-271 (Bs PTA-271) and Trichoderma atroviride SC1 (Ta SC1) produce distinctive modifications in the composition and network structure of the grapevine rhizosphere microbial community, as well as grapevine induced defenses.

Read More