terclim by ICS banner
IVES 9 IVES Conference Series 9 Characterization of four Chenin Blanc-rootstock combinations to assess grapevine adaptability to water constraint

Characterization of four Chenin Blanc-rootstock combinations to assess grapevine adaptability to water constraint

Abstract

Climate change impacts water availability for agriculture, notably in semi-arid regions like South Africa, necessitating research on cultivar and rootstock adaptability to water constraints. To evaluate the performance (vegetative and reproductive) of different Chenin Blanc-rootstock combinations to the two water regimes, a field experiment was established in a model vineyard at Stellenbosch University, South Africa. Chenin Blanc vines grafted onto four different rootstocks (110Richter, 99Richter, 1103Paulsen and US 8-7) were planted in 2020. The vines are managed under two contrasting water conditions – dryland and irrigated (industry norm). Each combination had one row under irrigation and two rows under dryland conditions. Five panels were selected in each of the 12 rows for monitoring purposes with the center vine in each selected panel being the target vine.

Vegetative measurements (trunk circumference, lateral leaf area and pruning mass), physiological monitoring (stomatal conductance and midday stem water potential), phenological progression and reproductive measurements (average yield per vine, average bunches per vine and average bunch mass) were conducted for the 2022-23 and 2023-24 seasons. Root studies were also done in the 2023-24 season. Initial data analysis revealed performance differences among rootstocks within the same irrigation regime (rootstock response) and between dryland and irrigated conditions (rootstock-irrigation response). Dryland vines showed faster post-véraison phenological progression. In terms of stem water potential, vines grafted to R110 and R99 responded similarly under irrigated conditions whilst 1103Paulsen and US 8-7 displayed similar trends under dryland conditions. Results reveal that some combinations may be adapted better to conditions of water constraint. This information is useful for planning strategies to mitigate challenging conditions in terms of the availability of water resources.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Talitha Venter1*, Sihle Xogwa,1, Carlos Poblete-Echeverría1, Melané Vivier1

1 South African Grape and Wine Research Institute, Stellenbosch University, Private Bag X1, Stellenbosch, South Africa, 7602

Contact the author*

Keywords

grapevine, rootstock, water stress, vine performance, vine response

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Qualité des vins et Terroirs. Incidence du milieu naturel sur la composition aromatique des vins

The northern vineyards produce wines with a high aromatic richness. The wines of Alsace are appreciated for the diversity of their aromas, the typicality of which was for a long time judged mainly according to the grape variety of origin. Alsatian winegrowers have however widely sensed the importance of the environment of the vine on the quality of the wines. Efforts are made to try to harmonize in a reasoned way the interaction between the natural environment and the plant material with a view to developing the character of the grape variety through the fine expression of the terroir and making the quality and typicality even more inimitable. wines produced in Alsace.

Read More

Analysis of Cabernet Sauvignon and Aglianico winegrape (V. vinifera L.) responses to different pedo-climatic environments in southern Italy

Water deficit is one of the most important effects of climate change able to affect agricultural sectors. In general, it determines a reduction in biomass production, and for some plants, as in the case of grapevine, it can endorse fruit quality. The monitoring and management of plant water stress in the vineyard

Read More

PyExpress – A pipeline for fast and reliable UAV image processing in vineyards

Increasing drought poses a challenge to viticulture, with complex impacts on grape yield and quality. The use of Unmanned Aerial Vehicles (UAV) in Precision Viticulture offers a valuable tool to detect drought stress, capturing its spatio-temporal variability and thus, supports management strategies.

Read More

Aspects concernant les relations entre quelques composantes de la biomasse viticole, en fonction de l’offre des ressources écologiques

Ecological resources represent vegetation factors, or even production factors, in quantitative expression. These, used by plants, transformed and organized according to their genetic program, become the material components of biomass. Subsequently, the ecological resources can be used as synthetic indicators of the ecological supply, necessary for the analysis of favorability for the understanding of ecosystems.

Read More

Confronting leafroll disease amid climate change – potential strategies for a resilient future

Climate change is presenting significant challenges for grape production, notably by increasing the severity and spread of grapevine leafroll disease (GLD).

Read More