Grapevine Diversity and Genetic Relationships in Northeast Portugal Old Vineyards

Autor: Diana Augusto, Javier Ibáñez, Ana Lúcia Pinto-Sintra, Virgílio Falco, Fernanda Leal, José Miguel Martínez-Zapater, Ana Alexandra Oliveira, Isaura Castro
Přispěvatelé: European Commission, Fundação para a Ciência e a Tecnologia (Portugal)
Rok vydání: 2021
Předmět:
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
instname
RIUR. Repositorio Institucional de la Universidad de La Rioja
Plants; Volume 10; Issue 12; Pages: 2755
Plants
Plants, Vol 10, Iss 2755, p 2755 (2021)
ISSN: 2223-7747
Popis: More than 100 grapevine varieties are registered as suitable for wine production in “Douro” and “Trás-os-Montes” Protected Designations of Origin regions; however, only a few are actually used for winemaking. The identification of varieties cultivated in past times can be an important step to take advantage of all the potential of these regions grape biodiversity. The conservation of the vanishing genetic resources boosts greater product diversification, and it can be considered strategic in the valorisation of these wine regions. Hence, one goal of the present study was to prospect and characterise, through molecular markers, 310 plants of 11 old vineyards that constitute a broad representation of the grape genetic patrimony of “Douro” and “Trás-os-Montes” wine regions; 280 samples, grouped into 52 distinct known varieties, were identified through comparison of their genetic profiles generated via 6 nuclear SSR and 43 informative SNP loci amplification; the remaining 30 samples, accounting for 13 different genotypes, did not match with any profile in the consulted databases and were considered as new genotypes. This study also aimed at evaluating the population structure among the 65 non-redundant genotypes identified, which were grouped into two ancestral genetic groups. The mean probability of identity values of 0.072 and 0.510 (for the 6 SSR and 226 SNP sets, respectively) were determined. Minor differences were observed between frequencies of chlorotypes A and D within the non-redundant genotypes studied. Twenty-seven pedigrees were confirmed and nine new trios were established. Ancestors of eight genotypes remain unknown.
This research was supported by the project INNOVINE&WINE—Vineyard and Wine Innovation Plat-form—NORTE-01-0145-FEDER-000038, co-financed by the European Regional Development Fund (ERDF) through the Norte2020 (Northern Regional Operational Programme 2014/2020) and National Funds by FCT—Portuguese Foundation for Science and Technology, under the project UID/AGR/04033/2020.
Databáze: OpenAIRE
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