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…

Effect of early defoliation on volatile composition and sensory properties of aglianico red wines

The aim of this work was to study the influence of early defoliation in the vineyard on Aglianico wines quality from Apulia region (Italy). Early defoliation was conducted in commercial Aglianico

Read More

Extraction of pathogenesis-related proteins and phenolics in Sauvignon Blanc as affected by different

The composition of wine is largely determined by the composition of pre-fermentation juice, which is influenced by extraction of grape components. Different grape harvesting and processing conditions could affect the extraction of grape components into juice. Among these grape components, pathogenesis-related (PR) proteins are of great concern for white wine maker as they are the main cause of haze formation in finished white wine. If not removed before bottling, these PR proteins may progress into haze through the formation of complex with phenolics under certain conditions. Thaumatin-like proteins (TLPs) and chitinases are the main constituents of PR proteins found in protein haze.

Read More

Effect of two water deficit regimes on the agronomic response of 12 grapevine varieties cultivated in a semi-arid climate

The Mediterranean basin is one of the most vulnerable regions to Climate Change effects. According to unanimous forecasts, the vineyards of Castilla-La Mancha will be among the most adversely affected by rising temperatures and water scarcity during the vine’s vegetative period. One potential strategy to mitigate the negative impacts of these changes involves the identification of grapevine varieties with superior water use efficiency, while ensuring satisfactory yields and grape quality.

Read More

Desorption of phenolic compounds bound to lees by combining hydrolytic enzymes and ultrasounds

he final concentration of phenolic compounds in the wines is usually lower than what might be expected given the phenolic concentration measured in grapes

Read More

IMPACT OF CLIMATIC ZONES ON THE AROMATIC PROFILE OF CORVINA WINES IN THE VALPOLICELLA REGION

In Italy, in the past two decades, the rate of temperature increases (0.0369 °C per year) was slightly higher compared to the world average (0.0313 °C per year). It has also been indicated that the number and intensity of heat waves have increased considerably in the last decades. (IEA, 2022). Viticultural zones can be classified with climatic indexes. Huglin’s index (HI) considers the temperature in a definite area and has been considered as reliable to evaluate the thermal suitability for winegrape production (Zhang et al., 2023).

Read More