terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Impact of polyclonal selection for abiotic stress tolerance on the yield and must quality traits of grapevine varieties

Impact of polyclonal selection for abiotic stress tolerance on the yield and must quality traits of grapevine varieties

Abstract

The effects of climate change in viticulture are currently a major concern, with heat waves and drought affecting yield, wine quality, and in extreme cases, even plant survival. Ancient grapevine varieties have high intravarietal genetic variability that so far has been explored successfully to improve yield and must quality. Currently, there is little information available on intravarietal variability regarding responses to stress. In the current work, the intravarietal genetic variability of several Portuguese varieties was studied for yield, must quality, and tolerance to abiotic stress, through indirect, rapid, and nondestructive measurements carried out in the field.

The present work describes an innovative approach in selection for abiotic stress tolerance, performed in experimental populations of several varieties installed according to resolvable row-column designs with 4 to 6 replicates1. Representative samples of the intravarietal variability of three ancient varieties (Uva Cão, Castelão, and Moscatel Graúdo) under conditions of drought and extreme heat were measured for surface leaf temperature (SLT), a parameter that had already been used for the varieties Aragonez2 and Arinto3, with good results. This was complemented with analyses of yield and quality characteristics of the must. Linear mixed models were fitted to the data of the traits evaluated, and the empirical best linear unbiased predictors (EBLUPs) of genotypic effects for each trait were obtained as well as the coefficient of genotypic variation (CVG) and broad sense heritability4. The genotypes were then ranked according to their level of tolerance to abiotic stress, and the changes in yield and traits of quality of the must were assessed for those genotypes. The results obtained will be the basis to develop, for those varieties, a new type of polyclonal selected material with increased tolerance to abiotic stress, in relation to the average of the varieties.

Acknowledgements: Projects “Conservation and selection of ancient grapevine varieties” (PDR2020-784-042704), “Save the intra-varietal diversity of autochthonous grapevine varieties” (PRR-C05-i03-|-000016); FCT: DL57/2016/CP1382/CT0024 to LC; UIDB/04129/2020 and LEAF Thematic Line Project Clones4ClimateChange.

1)  Gonçalves E. et. al. (2010) Experimental designs for evaluation of genetic variability and selection of ancient grapevine varieties: a simulation study. Heredity, 104: 552–562. DOI: 10.1038/hdy.2009.153

2)  Carvalho L.C. et. al. (2020) Selecting Aragonez genotypes able to outplay climate change driven abiotic stress. Front. Plant Sci., 11: 599230, DOI: 10.3389/fpls.2020.599230

3)  Carvalho L.C. et. al. (2023) Polyclonal selection for abiotic stress tolerance in Arinto: implications in yield and quality of the must. 44th World Congress of Vine and Wine, Cádiz, Spain, 5-9 June.

4)  Gonçalves E. and Martins A. (2019). Genetic gains of selection in ancient grapevine cultivars. Acta Hortic., 1248, 47–54. DOI: 10.17660/ActaHortic.2019.1248.7

DOI:

Publication date: October 4, 2023

Issue: ICGWS 2023

Type: Article

Authors

Luísa Carvalho1, Teresa Pinto2, Joana Ribeiro1, J. Miguel Costa1, Antero Martins1,2, Elsa Gonçalves1,2

1LEAF- Linking Landscape, Environment, Agriculture and Food, Associated Laboratory TERRA; Instituto Superior de Agronomia, Universidade de Lisboa, Portugal
2Associação Portuguesa para a Diversidade da Videira – PORVID, Lisboa, Portugal

Contact the author*

Keywords

abiotic stress, grapevine, intravarietal variability, polyclonal selection, surface leaf temperature

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Optimization of the acquisition of NIR spectrum in grape must and wine 

The characterization of chemical compounds related with quality of grape must and wine is relevant for the viticulture and enology fields. Analytical methods used for these analyses require expensive instrumentation as well as a long sample preparation processes and the use of chemical solvents. On the other hand, near-infrared (NIR) spectroscopy technique is a simple, fast and non-destructive method for the detection of chemical composition showing a fingerprint of the sample. It has been reported the potential of NIR spectroscopy to measure some enological parameters such as alcohol content, pH, organic acids, glycerol, reducing sugars and phenolic compounds.

Read More

White grape must processed by UHPH as an alternative to SO2 addition: Effect on the phenolic composition in three varieties

The quantity and distribution of polyphenols in musts play a fundamental role in the white winemaking. This is because these substances are exposed to oxidation reactions, which are catalysed by the polyphenol oxidase (PPO), leading to a decrease in the quality of the wines produced. PPO is inactivated by SO2, but currently, due to the restrictions of the legislation, other methodologies are being investigated. Ultra-High Pressure Homogenization (UHPH) is a non-thermal physic technology that exerts an ultrahigh pressure pumping (>200 MPa) of a fluid through a valve in a continuous system.

Read More

Investigating the Ancient Egyptian wines: The wine jars database

In Ancient Egypt, wine was a luxury product consumed mainly by the upper classes and the royal family and offered to gods in daily religious rituals in the temples.
Since the Predynastic (4000-3100 BC) period, wine jars were placed in tombs as funerary offerings. From the Old Kingdom (2680-2160 BC) to the Greco-Roman (332 BC-395 AD) period, viticulture and winemaking scenes were depicted on the private tombs’ walls. During the New Kingdom (1539-1075 BC), wine jars were inscribed to indicate: vintage year, product, quality, provenance, property and winemaker’s name and title.

Read More

Indicators of Sustainable Vineyard Soil Management: Metrics for Assessing Environmental Impacts

The vital role of soils in supporting life on our planet cannot be overstated. Soils provide numerous ecosystem services and functions, including biomass production, carbon sequestration, physical support, biological habitat, and genetic reserve, among others. Understanding the characteristics and sensitivity of soils in a specific terroir, along with effective soil management practices, is crucial for the sustainable management of natural resources.

Read More

Unveiling a hidden link: does time hold the key to altered spectral signatures of grapevines under drought?

Remote sensing technology captures spectral data beyond the visible range, making it useful for monitoring plant stress. Vis-NIR (Visible-Near Infrared) spectroscopy (400-1000 nm) is commonly used to indirectly assess plant status during drought. One example is the widespread use of normalized difference vegetation index (NDVI) that is strongly linked to green biomass. However, a knowledge gap exists regarding the applicability of this method to all the drought conditions and if it is a direct correlation to the water status of the plant.

Read More