terclim by ICS banner
IVES 9 IVES Conference Series 9 Genetic determinism of grapevine development stages as a tool for the adaptation to climate change

Genetic determinism of grapevine development stages as a tool for the adaptation to climate change

Abstract

A major goal of modern grapevine (Vitis vinifera L.) breeding programs is the introgression of resistance genes along with desirable traits for better adaptation to climate change. Developmental stages have an impact on yield components and berry composition and are expected to shift towards earlier dates in the future. We investigated the genetic determinism of phenological stages in the progeny of a cross between two grapevine hybrids, each carrying several quantitative trait loci (QTL) for downy mildew and powdery mildew resistance. The dates of three phenological stages, budbreak, flowering and veraison, were recorded during three consecutive seasons for 209 genotypes in the vineyard. The phenotypic data analysed were the duration of three periods expressed in thermal time (degree-days): 15 February to budbreak, budbreak to flowering and flowering to veraison. High density parental and consensus genetic maps were constructed and used for QTL detection. Several QTL were detected for each period and the corresponding allelic effects were quantified and expressed in degree.days. Two virtual early and late genotypes were created by combining the relevant alleles. Using a previously validated ecophysiological model with simulated climate data for the RCP8.5 IPCC scenario, budbreak, flowering and veraison dates were predicted for the parents, Chardonnay, and the two virtual genotypes for each year up to 2100. Mean temperatures during the ripening period were calculated. The interest of the virtual genotypes in compensating for the expected shift in veraison dates will be discussed.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Elsa Chedid1, Vincent  Dumas1, Didier Merdinoglu1, Éric Duchêne1*

1 Affliliation SVQV, Université de Strasbourg, INRAE, Colmar, France

Contact the author*

Keywords

Grapevine, climate change, phenology, QTL, plant breeding

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

The influence of culture medium on the dynamics of fermentation of wine yeasts

Wine yeast strains Saccharomyces ellipsoideus have important applications in food industry and in this regard is sought isolation as pure cultures and selecting those strains, which in laboratory investigations which have great biotechnological properties This study was intended as the ratio of live cells and autolysates cells also the influence of culture medium on this report. Yeasts selected for this study were isolated from industrial strains of indigenous grape varieties, namely: Feteasca Royal (FR) Feteasca White (FA), black Feteasca (FN), Romanian Tamaioasa (TR), Babeasca Black (BN) and Cotnari Grasa (GC).

Sélection génétique des variétés originelles d’Arménie, berceau de la viticulture mondiale

Armenia, a small country in the South of the Caucasus, has been rediscovering its wine-growing past since the discovery in 2007 of archaeological wine-growing remains dating back around 8,000 years. They are among the oldest in the world. Despite a great diversity of grape varieties, Armenian winegrowers did not have sufficiently organized genetic collections to produce plants and satisfy the growing demand for planting.

Implementation of a deep learning-based approach for detecting and localising automatically grapevine leaves with downy mildew symptoms

Grapevine downy mildew is a disease of foliage caused by Oomycete Plasmopara viticola an endoparasite that develops inside grapevine organs and can infect virtually every green organ. Downy mildew is one of the most destructive diseases in wine-growing regions, drastically reducing yield and fruit quality. Traditional manual disease detection relies on farm experts. Human field scouting has been widely used for monitoring the disease progress, however, is costly, laborious, subjective, and often imprecise.

Use of a recombinant protein (Harpin αβ) as a tool to improve phenolic composition in wines

Climate change is modifying environmental conditions in all wine-growing areas of the
world.

Effect of simulated shipping conditions on colour and SO2 evolution in soave wines

The shelf life of food is defined as the period in which the product will remain safe, is certain to retain desired sensory, chemical, physical, and microbiological characteristics