terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Genetic study of wild grapevines in La Rioja region

Genetic study of wild grapevines in La Rioja region

Abstract

Since the mid-1980s, several surveys have been carried out in La Rioja to search for populations of the sylvestrisgrapevine subspecies (Vitis vinifera L. subsp. sylvestris Gmelin). The banks of the Ebro River and its tributaries (Alhama, Cidacos, Leza, Iregua, Najerilla, Oja and Tirón rivers), as well as the surrounding vegetation of their valleys have been covered. So far, all the populations found are alluvial, forming part of the riparian vegetation of the Najerilla (the first reported population in La Rioja [1]), Iregua, and the vicinity of Oja valleys. Nevertheless, doubts arose from the beginning about the ‘sylvestris purity’ of some of these wild vines. In this work, leaves and/or cuttings from 83 vines have been used for genetic analyses: 63 vines were sampled in the wild in La Rioja region (17 from Najerilla banks, 43 from Iregua banks, and 3 from Agualinos stream, tributary of the Oja river), and 20 vines were sampled in the grapevine sylvestris collection of the University of La Rioja, originally collected as wild vines from the Najerilla valley. DNAs were extracted and genotyped at 6 microsatellite and 240 SNP markers. A total of 58 different genotypes were found, 20 in the Najerilla population, 36 in the Iregua population and 2 in the Oja population. These genotypes were included in a large genetic structure analysis of more than 2.800 genotypes representing worldwide sylvestrisand sativa subspecies. More than 84% of the wild samples from La Rioja showed a high membership coefficient to the sylvestris population, supporting their sylvestris condition. A local analysis focused on genotypes of cultivated and wild vines found in La Rioja separated them into two main clusters, with a clear division between sylvestris and cultivated vines. Some wild vine genotypes were found in intermediate positions between these two groups, indicating the existence of an introgression of the sativa gene pool into the sylvestris population, constituting an additional threat to the sylvestris subspecies.

Acknowledgements: This work is part of the project “Diversidad genética en la vid y adaptación al cambio climático” (PID2020-120183RB-I00), funded by MCIN / AEI /10.13039/501100011033.

1)  De Toda F. M. and J. C. Sancha (1999) Characterization of Wild Vines in La Rioja (Spain). Am. J. Enol. Vitic. 50: 443-446, doi: 10.5344/ajev.1999.50.4.443.

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Javier Ibáñez1*, Javier Tello1, Fernando Martínez de Toda1, José Manuel Valle2, Álvaro Rodríguez-Miranda2, Carlos Alvar Ocete3, José Miguel Martínez-Zapater1, Rafael Ocete3

1 Instituto de Ciencias de la Vid y del Vino (CSIC, UR, CAR). Finca La Grajera, Ctra. de Burgos Km. 6, 26007 Logroño, La Rioja. Spain
2 Built Heritage Research Group (GPAC), University of the Basque Country (UPV/EHU), Vitoria- Gasteiz. Spain
3 Freelance, Tirgo, La Rioja. Spain

Contact the author*

Keywords

introgression, genetic structure, microsatellite, SNP, sylvestris, Vitis vinifera, wild

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Defoliation combined with exogenous ABA application results in slower ripening and improved anthocyanin profile

Reducing sugar accumulation in grape (Vitis vinifera L.) berries may be a way to mitigate the effect of climate change. Managing canopy and crop load is an effective way to do so, however, reducing canopy size has been demonstrated to induce undesirable effects on anthocyanins. The aim of this study was to test if an application of exogenous ABA on the grape berries of defoliated vines (⅔ of the leaves removed) can result in slower sugar accumulation while maintaining grape and wine quality. An experiment with defoliation and exogenous ABA application on directly on clusters (factorial design 2×2) was performed with ‘Tempranillo’ fruit-bearing cuttings.

Read More

The combined use of Lachancea thermotolerans and lactic bacteria in wine technology

The production of most red wines that are sold involves an alcoholic fermentation carried out by yeasts of the Saccharomyces genus, and a subsequent fermentation carried out by lactic bacteria of the Oenococus oeni species after the first one is fully completed. However, the traditional process can face complications, which can be more likely in grape juices with high levels of sugar and pH. Because of climate change, these situations are more frequent in the wine industry. The main hazards in those scenarios are halts or delays in the alcoholic fermentation or the growth of unwanted bacteria while the alcoholic fermentation is not done yet and the wine still has residual sugars.

Read More

Overall conceptual characterization of aged dry white wines using a mental descriptive questionnaire

The purpose of the present study was to understand the overall concept of an aged dry white wine using a descriptive mental questionnaire. A total of 680 worldwide participants, grouped according to their involvement in the wine business, replied to an online questionnaire to characterize the sensory analytical and synthetic descriptors of an aged dry white wine. The descriptors were selected using a Check-All-That-Apply (CATA) approach concerning wine colour, aroma, taste, mouthfeel, and global appreciation.

Read More

Cover crop management and termination timing have different effects on the maturation and water potentials of Glera (Vitis vinifera L.) in Friuli-Venezia Giulia

Inter-row soil tillage in vineyards, stimulates vigor and production due to the absence of competition for water and nutrients, however negatively affects organic matter content, soil erosion, and compaction, resulting in reduced fertility. In this study, we investigated the effects of different cover crop management approaches, including cultivation type and termination timing, on the physiological and productive responses of a Glera vineyard.
The experimental trial was conducted in Precenicco (UD) from 2019 to 2021. A commercial mixture for autumn cover cropping was sown in alternating rows, and the sowing pattern was changed each year.

Read More

Combined use of leaf removal and natural shading to delay grape ripening in Manto negro (Vitis vinifera L.) under deficit irrigation 

The increasingly frequent heat waves during grape ripening pose challenges for premium wine grape production. This makes the development of irrigation and canopy management techniques of great importance to maximize yield and grape quality. A field experiment was carried out during 2021 and 2022 using Manto negro wine grapes to study the effect of two irrigation strategies and different light exposure levels on grape quality.

Read More