terclim by ICS banner
IVES 9 IVES Conference Series 9 Characterizing graft union formation in different scion/rootstock combinations of grapevine 

Characterizing graft union formation in different scion/rootstock combinations of grapevine 

Abstract

In most viticultural regions, grapevines are cultivated grafted, employing either hybrid or pure species of various American Vitis spp., such as V. berlandieri, V. rupestris, and V. riparia, as grapevine rootstocks. These rootstocks play a crucial role in providing resistance to the Phylloxera insect pest. Beyond Phylloxera resistance, it is desirable for grapevine rootstocks to exhibit resistance to other soil-borne pathogens and adaptability to abiotic stress conditions. The introduction of new rootstocks holds promise for adapting agriculture to climate change without altering the characteristics of the final harvested product. However, achieving high success rates in grafting for new rootstock genotypes is imperative. This study aims to develop quantitative techniques for characterizing graft union formation in different grapevine scion/rootstock combinations. The research focuses on the initial months after grafting, examining factors such as the quantity of callus (both fresh and dry mass) and the mechanical strength of the graft union. Interestingly, the quantity of callus at the graft interface varied among genotypes and did not necessarily correlate with the mechanical strength of the graft union. Challenges in quantitatively phenotyping different stages of graft union formation have impeded the identification of genetic determinants for grafting success across plant species. To address this bottleneck, various quantitative techniques are being developed to elucidate the genetic architecture of graft union formation in grapevine.

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Marilou Camboué1, Jean-Pascal Tandonnet1, Marine Morel1, Elisa Marguerit1, Sarah Jane Cookson1*

1 EGFV, Univ. Bordeaux, Bordeaux Sciences Agro, INRAE, ISVV, F-33882, Villenave d’Ornon, France

Contact the author*

Keywords

scion, rootstock, grafting, callus, mechanical strength

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Counting grape bunches using deep learning under different fruit and leaf occlusion conditions

Yield estimation is very important for the wine industry since provides useful information for vineyard and winery management. The early yield estimation of the grapevine provides information to winegrowers in making management decisions to achieve a better quantity and quality of grapes. In general, yield forecasts are based on destructive sampling of bunches and manual counting of berries per bunch and bunches per vine.

How to deal with the Green Deal – Resistant grapevine varieties to reduce the use of pesticides in the EU

With its Farm-to-Fork Strategy, which is a part of the European Green Deal, the European Union aims at reducing the amount of pesticides used in agriculture by 50% until 2030. As viticulture uses around 70% of the fungicides in the EU, there is substantial pressure on winemakers to reduce their pesticide input. On top of the political goal, winegrowers face increased pressure from the public demanding a more sustainable production of wine.

Optimization of a tool to determine the oxygen avidity of a wine through the kinetics of consumption by its phenolic and aromatic fractions (PAFs)

Wine oxidation phenomena during the different processes of winemaking, aging and storage are closely related to the presence of oxygen and to the wine’s capacity for consumption.

Spur-pruning cordon for ‘Barbera’ vines in Piedmont

The traditional pruning system in Piedmont (North-West Italy) is the Guyot system; it requires trained personnel, difficult to find, and it does not permit the mechanization of winter pruning, thus it is very expensive. An alternative technique that could allow the reduction of the vineyard management costs could be the spur-pruning which is simpler to perform and fully mechanized.

Vitamins in musts : an unexplored field

Vitamins are major compounds, involved in several prime yeast metabolic pathways. Yet, their significance in oenology has remained mostly unexplored for several decades and our current knowledge on the matter still remaining obscure to this day. While the vitaminic contents of grape musts have been approached in these ancient investigation