Enoforum 2021
IVES 9 IVES Conference Series 9 Enoforum Web 9 Enoforum Web Conference 2021 9 Characterized one of the largest collections of grapevine rootstocks (non-vinifera)

Characterized one of the largest collections of grapevine rootstocks (non-vinifera)

Abstract

Microsatellite markers are a valuable tool to facilitate the management of germplasm collections and assess genetic diversity. This study reports the genetic characterization of a large collection of 379 rootstocks and other non-viniferaaccessions maintained at the University of Milan, Italy. Accessions were genotyped with 22 highly polymorphic microsatellite markers, including the nine “international” loci used for grapevine identification, three VMC, three VrZAG, and seven VChr loci; 17 loci were retained to identify cultivars, investigate genetic diversity, analyze pedigrees, infer population structure, and design a core collection. This study identified 232 unique genotypes; the allelic profiles of 70 rootstocks were confirmed according to the literature and databases, while the profiles of 43 rootstocks were proposed for the first time. Pedigree analysis highlighted 77 parents-offspring trios and 44 parent-offspring relationships, some of them already known and others new. Genetic-structure analysis showed a more likely number of three ancestral groups, with a high percentage of admixed samples. A structure based on the genetic background of genotypes was not observed. A core collection of 70 genotypes captured 100% of the entire number (373) of detected alleles. Most of these genotypes were unidentified or poorly characterized. The information provided in this paper could assist breeders in their efforts to exploit still unexplored individuals useful for long-term breeding plans. 

DOI:

Publication date: April 23, 2021

Issue: Enoforum 2021

Type: Article

Authors

Gabriella De Lorenzis1*, Daniele Migliaro2, Davide Bianchi1, Giovambattista Simone Di Lorenzo1, Barbara De Nardi2, Massimo Gardiman2, Osvaldo Failla1, Lucio Brancadoro1, Manna Crespan2*

1 Department of Agricultural and Environmental Sciences, Milano, Italy
2 CREA – Research Centre for Viticulture and Enology, Conegliano, Italy

Contact the author

; 

Tags

Enoforum 2021 | IVES Conference Series

Citation

Related articles…

Validation of a method for the determination of volatile compounds in in spirituous beverages using contained ethanol as a reference substance

The results of experimental studies of the method based on the usage of ethyl alcohol as an internal standard for the direct determination of volatile compounds in wines and others alcohol contained products are presented. The method was validated in terms of precision, accuracy, limits of detection and quantification (lod and loq), linearity, and robustness.
Read More

An intra-block study of bunch zone air temperature and its impact on berry and wine attributes

Temperature is a key environmental factor affecting grape primary and secondary metabolites. Even if several mesoscale studies have already been conducted on temperature
especially within a Protected Designation of Origin area, few data are available at an intra-block scale. The present study aimed at i) assessing the variability in bunch zone air temperature within a single vineyard block and the temporal stability of temperature spatial patterns, ii) understanding temperature drivers and
iii) identifying the impact of temperature on grape berry attributes.

Read More

NACs intra-family hierarchical transcriptional regulatory network orchestrating grape berry ripening

Considering that global warming is changing berry ripening timing and progression, uncovering the molecular mechanisms and identifying key regulators governing berry ripening could provide important tools in maintaining high quality grapes and wine. NAC (NAM/ATAF/CUC) transcription factors represent an interesting family due to their key role in the developmental processes control, such as fruit-ripening-associated genes expression, and in the regulation of multiple stress responses. Between the 74 NAC family members, we selected 12 of them as putative regulators of berry ripening: NAC01, NAC03, NAC05, NAC11, NAC13, NAC17, NAC18, NAC26, NAC33, NAC37, NAC60 and NAC61.

Read More

Cabernet-Sauvignon ripening in Chile: follow-up study from 2012 to 2018

Temperature is a relevant parameter during vineyard development, affecting vine phenology and grape maturity. Moreover, the climate of the different Chilean valleys influences the varieties cultivated, the ripening period and the final quality of the wines. The use of growing degree days (GDD) is known worldwide for the study of climate in viticulture regions. However, little is known about the evolution of maturity and the sugar loading stop, based on this parameter.

Read More

The impact of different yeasts and harvest time on the wine quality of Beihong and Beimei (<I>V. vinifera x V. amurensis</I>)

Beihong and Beimei are two wine cultivars from ‘Muscat Hamberg’ (V. vinifera L.) and wild V. amurensis Rupr., which were released in China in 2008. Here，two enology practices were reported. Firstly, the impact of different yeasts including D254, GRE, K1, D21 and BDX on dry wine quality of Beihong and Beimei was investigated. For Beihong, among wines fermented by all yeasts, residual sugar content was the lowest, total anthocyanin and resveratrol contents were the highest in the wine by D254. However, the wine by D254 had lower titrable acid than those by the other yeasts except BDX.

Read More