terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Phenotyping bud break and trafficking of dormant buds from grafted vine

Phenotyping bud break and trafficking of dormant buds from grafted vine

Abstract

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]. It is the main objective of this project to identify rootstock genotypes that could contribute in delaying bud burst in order to adapt to extreme climate events. For this, first we investigated the cold requirements to achieve a homogenous bud break pattern from cuttings of Merlot, Cabernet Sauvignon and Chasselas[2]. Interestingly, Merlot needs longer cold exposure times to achieve 100% bud break. Moreover, bud break of different Vitis species was assessed in the field. Two late and one early Vitis were identified which will be used as rootstock in grafts with Cabernet Sauvignon. Bud break times of these combinations will be assessed to identify changes in bud dormancy in the scion. Furthermore, buds from Cabernet Sauvignon, Merlot and RGM are being sampled for a year-cycle to follow bud development, dormancy and bud break by RNAseq and metabolomics. This, coupled with QTLs identified from bud break of a population of Cabernet Sauvignon x Vitis riparia, will allow the identification of genes involved in dormancy and bud break. Lastly, to understand the rootstock/scion/bud communication, traficking of calceine in cuttings containing dormant and non-dormant buds was studied to indicate the moment in which this molecule is able to enter the bud. Results show that calceine is not able to enter the bud in either condition therefore, 32P is being used to rule out a possible molecular size effect.

Acknowledgements: We thank Lysiane Brocard from the Bordeaux Imaging Center for the advice on microscopy and Bordeaux Plant Sciences from the Université de Bordeaux for funding this research through the Grand Programme de Recherche (GPR).

1)  Miele A. (2019). Rootstock-scion interaction:6. Phenology, chilling and heat requirements of Cabernet Sauvignon grapevine. Revista Brasileira de Fruticultura 41.

2)  Dokoozlian, N.K. 1999. Chilling Temperature and Duration Interact on the Budbreak of ‘Perlette’ Grapevine Cuttings. HORTSCIENCE, VOL. 34(6), OCTOBER 1999.

DOI:

Publication date: October 11, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Anne Marie Labandera Nadeau1*, Elisa Marguerit1, Jean-Pascal Tandonnet1, Coralie Chesseron2, Alain Mollier2, Pierre Gastou1, Marina de Miguel Vega1, Bénédicte Wenden3, Sarah Cookson1

1 Ecophysiology and Functional Genomics of the Grapevine – INRAE Bordeaux Aquitaine
2 Interaction Sol Plante Atmosphére (ISPA) – INRAE Bordeaux Aquitaine

Biologie du Fruit et Pathologie – INRAE Bordeaux Aquitaine

Contact the author*

Keywords

bud break, dormancy, communication, grafting

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

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.

Rootstock regulation of scion phenotypes: the relationship between rootstock parentage and petiole mineral concentration

Rootstocks not only provide tolerance to Phylloxera, but also ensure the supply of water and mineral nutrients to the whole plant. Rootstocks are an important way of adapting to environmental conditions while conserving the typical features of scion varieties. We can exploit the large diversity of rootstocks used worldwide to aid this adaptation. The aim of this study was to characterise rootstock regulation of scion mineral status and its relation with scion development.

Physicochemical behaviour of wine spirit and wine distillate aged in Sherry Casks® and Brandy casks

Brandy is a spirit drink made from “wine spirit” (<86% Alcohol by Volume – ABV; high levels of congeners and they are mainly less volatile than ethanol), it may be blended with a “wine distillate” (<94.8%ABV; low levels of congeners and these are mainly more volatile than ethanol), as long as that distillate does not exceed a maximum of 50% of the alcoholic content of the finished product[1]. Brandy must be aged for at least 6 months in oak casks with <1000L of capacity. During ageing, changes occur in colour, flavour, and aroma that improve the quality of the original distillate.

Characterization of non-cultivated wild grapevines in Extremadura (Spain) 

Several Eurasian wild grapevine populations were found along Extremadura region (southwestern Spain). For conservation and study, one individual from four different populations (named L1, L2, L5 and L6) was vegetatively propagated and planted at Instituto de Investigaciones Agrarias Finca La Orden (CICYTEX), Badajoz. The aim of the present work was to characterize those conserved individuals from four different populations based on both an ampelographic description and a molecular analysis. Three vines per individual were studied.

The colour pattern of flower arrangements influence wine tasters’ sensory description

The arrangements of flowers and wine counterparts are inextricably linked. Whether a fundamental aspect of tablescaping or acolytes to broader entertainment rituals, they have an entangled history since ancient times. The aim of this contribution is to verify the influence of visually delicate and robust flower arrangements on individual description of wines. Changes in the sensory description of wines were investigated during subjects’ (thirty-two participants) exposure to three different conditions: the presence of delicate, robust, or totally absent flower arrangements. In each condition, the same two wines were blind tasted: a wine previously defined as delicate – a Pinot Noir from Australia, and a wine known for its robust character – a Tannat from Uruguay.