GiESCO 2019 banner
IVES 9 IVES Conference Series 9 GiESCO 9 Phenology, thermal requirements and maturation of the SR 0.501-17 wine grape hybrid cultivated in contrasting climate

Phenology, thermal requirements and maturation of the SR 0.501-17 wine grape hybrid cultivated in contrasting climate

Abstract

Context and purpose of this study – The use of hybrids in viticulture is one of the alternatives for sustainable production in hot and rainy regions during grapevine maturation. This sustainable production concerns the reduction of pesticide use, adaptation to climate and control of vine decline. The SR 0.501-17 wine grape hybrid, developed in the grapevine program of the Agronomic Institute of Campinas (IAC), is characterized by producing white grapes with small spherical berries with seeds. The agronomic characterization of this hybrid, especially in different climatic conditions, as well as the evaluation of its performance in winemaking are necessary. The objective of this work was to characterize the duration and thermal requirements of the different phenological stages and the influence of rainfall on the physicochemical characteristics of the must in two contrasting climate regions of the State of São Paulo.

Material and methods – The phenology, thermal requirements expressed in degree-days, soluble solids content and titratable acidity of the hybrid were evaluated during the grape growing seasons from 2012 to 2016, in contrasting climatic conditions at Jundiaí at east and Votuporanga at northwest of the São Paulo State-Brazil.

Results – The average duration of the pruning-harvest period was 146 days in Jundiaí and 131 days in Votuporanga and the average duration of the grape maturation period (beginning of berry softening to harvest) was 29 and 27 days, respectively for Jundiaí and Votuporanga. The thermal requirement expressed in degrees-days for the hybrid growth cycle was 1663 and 1923, and for the maturation period, 390 and 485, respectively for Jundiaí and Votuporanga, SP. Rainfall during the maturation period showed negative correlation with total soluble solids and maturation index and positive correlation with titratable acidity. The effect of temperature on vine growth cycle were more pronounced in Jundiaí in comparison to Votuporanga while the effect of rainfall on the maturation characteristics were more effective in Votuporanga when compared to Jundiaí.

Download the PDF

DOI:

Publication date: September 26, 2023

Issue: GiESCO 2019

Type: Poster

Authors

Mara Fernandes MOURA1*, Mário José PEDRO JÚNIOR 2, José Luiz HERNANDES1

1* Instituto Agronômico de Campinas, Centro Avançado de Pesquisa de Frutas, Av. Luiz Pereira dos Santos, 1500, CEP. 13214-820, Jundiaí, São Paulo, Brasil
2 Instituto Agronômico de Campinas, Centro de Solos e Recursos Ambientais, Bolsista do CNPq (Processo 302162/2016-0). Av. Barão de Itapura, 1481, CEP 13020-902, Campinas, São Paulo, Brasil

Contact the author

Keywords

cycle duration, degree-days, soluble solids, titratable acidity

Tags

GiESCO | GiESCO 2019 | IVES Conference Series

Citation

Related articles…

Climate change – variety change?

In Franconia, the northern part of Bavaria in Germany, climate change, visible in earlier bud break, advanced flowering and earlier grape maturity, leads to a decrease of traditionally cultivated early ripening aromatic white wine varieties as Mueller-Thurgau (30 % of the wine growing area) and Bacchus (12 %). With the predicted rise of temperature in all European wine regions the conditions for white wine grape varieties will decline and the grapes themselves will lose a part of their aromatic and fruity expression. Variety change towards the cultivation of later ripening white wine varieties is a very expensive and long-term process, and must be accompanied by special marketing efforts.

Read More

Analyse climatique à l’échelle des Coteaux du Layon

Les études d’impact du climat sur la vigne nécessite de descendre à des échelles très fines car les facteurs climatiques sont tributaires de la topographie, la végétation, les expositions … Dans le cadre du programme ANR-JC Terviclim, 22 capteurs ont été installés dans les vignobles des Coteaux du Layon afin de caractériser le climat particulier de ces terroirs. L’analyse des températures montre de fortes disparités entre les data loggers et pourtant situés parfois sur les mêmes parcelles ou sur des parcelles voisines. Les indices bioclimatiques tels les degrés jours sont également contrastés suivant la situation des capteurs sur les coteaux.

Read More

Mathematical modeling of fermentation kinetics: a tool to better understand interactions between Torulaspora delbrueckii and Saccharomyces cerevisiae in mixed cultures

Nowadays the use of Torulaspora delbrueckii is more and more common in winemaking. However, its behavior in presence of Saccharomyces cerevisiae is not always predictable.

Read More

Comparative study of the volatile substances and ellagitannins released to wine by barrels of Quercus pyrenaica, Quercus petraea and Quercus alba

The aim of the study was to study the volatile substances and ellagitannins released to wine by barrels of Quercus pyrenaica (Spanish Oak) in comparison with barrels of Quercus petraea (French Oak) and Quercus alba (American Oak) as well as to determine their sensory impact.

Read More

IMPACT OF MUST NITROGEN DEFICIENCY ON WHITE WINE COMPOSITION DEPENDING ON GRAPE VARIETY

Nitrogen (N) nutrition of the vineyard strongly influences the must and the wine compositions. Several chemical markers present in wine (i.e., proline, succinic acid, higher alcohols and phenolic compounds) have been proposed for the cultivar Chasselas, as indicators of N deficiency in the grape must at harvest [1]. Grape genetics potentially influences the impact of N deficiency on grape composition, as well as on the concentration of potential indicators in the wine. The goal of this study was to evaluate if the che- mical markers found in Chasselas wine can be extended for other white wines to indicate N deficiency in the grape must.

Read More