Macrowine 2021
IVES 9 IVES Conference Series 9 Macrowine 9 Macrowine 2021 9 Grapevine diversity and viticultural practices for sustainable grape growing 9 Understanding the genetic determinism of phenological and quality traits in ‘Corvina’ grape variety for selection of improved genotypes

Understanding the genetic determinism of phenological and quality traits in ‘Corvina’ grape variety for selection of improved genotypes

Abstract

Downy and powdery mildew are major issues in grapevine cultivation, requiring many phytosanitary treatments to ensure yield and quality. Climatic changes are also challenging grape cultivation in several areas, leading to anticipation of phenological events and increasing impact of temperature on grape quality. Beside disease resistance, adaptation of varieties to changing climate is thus an additional breeding target, which includes the selection of late ripening varieties that may escape the warmer summer conditions, while preserving distinctive performance and wine quality. With the aim to increase our understanding of the genetic determinism for phenological and quality traits, we have crossed the autochthonous cv. Corvina, typical of the Verona province area, to previously identified divergent varieties. Segregating cross populations of Corvina x Solaris and Cabernet-Sauvignon x Corvina including a high number of seedlings were developed, propagated and grown in field conditions for mapping of traits. High-density genetic maps based on SNPs obtained through hybridization to an Illumina Vitis18KSNP chip are produced. Field phenotyping includes the evaluation of the main phenological stages (budbreak, flowering, veraison and ripening) together with the assessment of some morphological and quality traits at harvest on all progenies with the final purpose of QTL mapping. Moreover, the introgression of resistance sources from cv Solaris is assessed in the relative cross. Response to Plasmopara viticola is investigated especially in selected resistant genotypes under field conditions or following inoculation of leaf discs and shows different degrees of resistance in some Corvina offsprings differing in the number of inherited Rpv loci. Based on resistance gene introgression as well as on phenotypic parameters, some selections are being propagated for a deeper characterization. New markers derived from the characterization of Corvina-crosses are expected to further assist future selections. Altogether, the described approaches will improve our understanding of the genetic control of phenology and berry quality traits, thus assisting breeding in this important local variety.

DOI:

Publication date: September 2, 2021

Issue: Macrowine 2021

Type: Article

Authors

Diana Bellin, 1, Martina Marini, 1, Ron Shmuleviz, 1, Alice Baroni, 1,  Riccardo Mora, 1, Tahir Mujtaba, 1, Martina Zerneri, 1, Giada Bolognesi, 1, Jessica Vervalle, 2, Laura Costantini, 3, Maria Stella Grando, 3, Giovanni Battista Tornielli, 1,  Annalisa Polverari, 1

1, Department Of Biotechnology, University Of Verona,
2, Stellenbosch University
3, Fondazione Edmund Mach – Istituto Agrario San Michele All’Adige

Contact the author

Keywords

grapevine, corvina, plasmopara viticola, plant phenology

Citation

Related articles…

Agroclimatic characterisation of the Portugese wine denominations of origin using a compound index

Aims: This study aims to: (1) characterize the agroclimatic conditions of the Portuguese Denominations of Origin, using a compound index that combines thermal and soil water balance conditions and a high-resolution climatic dataset (~1 km spatial resolution); (2) categorize the main grapevine varieties as a function of this compound index.

Read More

SIP and save the planet: a sensory and consumer exploration of australian wines made from potentially drought-tolerant white wine grapes

In order to attenuate the effects of climate change on the ability to cultivate quality wine grape vines in Australia, it is essential to adapt to the projected less favourable Australian climate scenarios. One response may be to convert a portion of the current grapevine plantings to those varieties that demand less water and can tolerate increased heat. This investigation aimed to (i) generate sensory profiles and (ii) obtain knowledge about Australian wine consumers’ preferences and opinions of Australian wines made from potentially drought tolerant, white wine grape varieties not traditionally cultivated in Australia. A Rate-All-That-Apply (RATA) sensory panel (n = 49) generated sensory profiles of 44 commercial white wines made from 7 different white grape varieties (Arinto, Fiano, Garganega, Greco, Verdejo, Verdelho and Vermentino), plus two benchmark examples each of an Australian Riesling, Pinot Gris and Chardonnay wine.

Read More

The suitability for viticulture at varying altitudes: a study of grapevine ripening in the Italian Alps

Planting vineyards in cooler climates has been used over recent years as
a strategy to counter the climatic shifts caused by climate change. A move towards higher altitudes in hilly and mountainous wine regions may provide a solution to deleterious effects that increased ambient temperatures have on wine quality. Until now, the influences of higher altitudes and their climates, as well as their effect on vine growing cycles, still holds a lot of scientific uncertainty. The transnational EU-funded project REBECKA (Interreg V-A IT-AT: ITAT1002, duration: 2017-2019) has the objective to develop a regional valuation method to rate the suitability for viticulture in South Tyrol (Italy) and Carinthia (Austria). Preliminary surveys were performed regarding the effects of altitude on ripening performance of the cultivar Pinot Noir.

Read More

Typology of wines in touch with environmental factors of terroirs and grapevine. Application to the Chinon vineyard

According to the vintage, it may be difficult for vine growers to make a decision regarding the type of wine in relation with the soils.

Read More

Evolution of oak barrels C-glucosidic ellagitannins in model wine solution

Oak wood has a significant impact on the chemical composition of wine, leading to transformations that influence its organoleptic properties, such as its aroma, structure, astringency, bitterness and color. Among the main extractible non-volatile polyphenol compounds released from oak wood, the ellagitannins are found [1].

Read More