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…

Grapevine genotypes differ in xylem vessel occlusion after winter pruning 

Grapevines are continually wounded throughout their cultivation especially during winter pruning. Grapevines respond to wounding by occluding xylem vessels with gels or tyloses to limit pathogen attack and dehydration of the tissues. Although the production of xylem vessel occlusions has been studied in grapevine, to date we have no knowledge of whether different genotypes respond differently. The objective of this study was to characterize the genetic variation in xylem vessel occulsions in five different scion genotypes pruned at different dates.

Read More

Reusable system for wine bottles: An analysis of acceptance among German wine consumers

Consumer demands for environmentally friendly products, including wine, are constantly increasing.

Read More

Impact and comprehension of nitrogen and lipid nutrition on the production of fermentative aromas with different S. Cerevisiae yeasts used for spirits

In the Cognac appellation, the production of white wines is almost exclusively dedicated to elaborate Charentaise eaux-de-vie. In this sense, the quality of Cognac eaux-de-vie intrinsically depends on the quality of the base wines subjected to the distillation stage. In this context, the production of these base wines differs from those of classic white wines to release particular organoleptic properties during the distillation stage.

Read More

SENSORY PROPERTIES IMPORTANT TO AUSTRALIAN FINE WINE CONSUMER SEGMENT PERCEPTION OF CHARDONNAY WINE COMPLEXITY AND PREFERENCE

Wine complexity is considered a multidimensional yet equivocal sensory percept. This project uncovered sensory attributes Australian Chardonnay wine consumers associate with Chardonnay wine complexity
and correlations between expert and consumer perceived wine complexity and preference. A
wine consumer test examined 6 Australian Chardonnay wines of three complexity levels designated low (LC1&2), medium (MC1&2), and high (HC1&2) by an expert panel (n = 8) using a benchtop sensory task. Consumers (n = 81) rated their perceived liking using a 9-point hedonic scale; wine complexity with a 5-point scale anchored “low”, “low-medium”, “medium”, “medium-high”, and “high” and lastly, profiled the wines using Rate-All-That-Apply (RATA). Psychographic segmentation with the Fine Wine Instrument
(FWI) generated three segments; Wine Enthusiasts (WE n=29), Aspirants (ASP n=40) and No- Frills (NF n=12).

Read More

Role of landscape diversity for biodiversity conservation in viticulture: life+ biodivine’s results

Nowadays biodiversity loss is considered as a prior environmental issue. Agricultural landscapes are particularly concerned, mainly through the specialization and intensification of farming activities which lead, at a larger scale, to landscape simplification. Landscape management would be a good means to halt biodiversity loss, but large-scale studies remain rare. The life+ project BioDiVine aims to understand biodiversity dynamics and promote sustainable conservation actions at this scale in viticulture.

Read More