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…

AI and blockchain synergy-driven reconstruction of nutritional health value chains in the wine industry

The increasing demand for healthier, more transparent, and sustainable wine products has prompted the need for innovative solutions to optimize the wine health value chain.

Influence of soil characteristics on vine growth, plant nutrient levels and juice properties: a multi-year analysis

Soil physical and chemical properties affect vine nutrition, as indicated by leaf and petiole nutrient content, in a way that may directly impact wine properties.

Assessing the benefits of irrigation access: the case of Southern France vineyards

Agriculture worldwide is threatened by climate change. In particular, declining water resource availability combined with increasing water demand is a key challenge in many rainfed areas, where irrigation appears to be a straightforward adaptation option. In this context, assessing the impacts of irrigation adoption on farm yields and incomes is a necessary step to reflect on the impact of both ex-post and ex-ante policies.

Metal reducing agents (Fe and Al) as possible agents to measure the dimensions of the hydrogen sulfide (H2S) pool of precursors in wines

Reductive wine fault is characterized by the presence of odors such as rotten eggs or spoiled camembert cheese, originating from hydrogen sulfide (H2S) and methanethiol (MeSH) [1]. These compounds stabilize in polysulfide forms, creating a complex pool of precursors that will revert to both molecules when the environment becomes anoxic [2].

An intra-block study of bunch zone air temperature and its impact on berry and wine attributes

Temperature is a key environmental factor affecting grape primary and secondary metabolites. Even if several mesoscale studies have already been conducted on temperature
especially within a Protected Designation of Origin area, few data are available at an intra-block scale. The present study aimed at i) assessing the variability in bunch zone air temperature within a single vineyard block and the temporal stability of temperature spatial patterns, ii) understanding temperature drivers and
iii) identifying the impact of temperature on grape berry attributes.