Comparison of selection methods for the establishment of a core collection using SSR markers for hazelnut (Corylus avellana L.) accessions from European germplasm repositories
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Author
Boccacci, Paolo
Aramini, Maria
Ordidge, Matthew
van Hintum, Theo J. L.
Torello Marinoni, Daniela
Valentini, Nadia
Sarraquigne, Jean‑Paul
Solar, Anita
Rovira, Mercè
Bacchetta, Loretta
Botta, Roberto
Publication date
2021-11-19ISSN
1614-2942
Abstract
Hazelnut (Corylus avellana L.) is one of the most important tree nut crops in Europe. Germplasm accessions are conserved in ex situ repositories, located in countries where hazelnut production occurs. In this work, we used ten simple sequence repeat (SSR) markers as the basis to establish a core collection representative of the hazelnut genetic diversity conserved in different European collections. A total of 480 accessions were used: 430 from ex situ collections and 50 landraces maintained on-farm. SSR analysis identified 181 genotypes, that represented our whole hazelnut germplasm collection (WHGC). Four approaches (utilizing MSTRAT, Power Core, and Core Hunter’s single- and multi-strategy) based on the maximization (M) strategy were used to determine the best sampling method. Core Hunter’s multi-strategy, optimizing both allele coverage (Cv) and Cavalli-Sforza and Edwards (Dce) distance with equal weight, outperformed the others and was selected as the best approach. The final core collection (Cv-Dce30) comprised 30 entries (16.6% of genotypes). It recovered all SSR alleles and preserved parameter variations when compared to WHGC. Entries represented all six gene pools obtained from the population structure analysis of WHGC, further confirming the representativeness of Cv-Dce30. Our findings contribute towards improving the conservation and management of European hazelnut genetic resources and could be used to optimize future research by identifying a minimum number of accessions on which to focus.
Document Type
Article
Document version
Accepted version
Language
English
Subject (CDU)
663/664 - Food and nutrition. Enology. Oils. Fat
Pages
31
Publisher
Springer
Is part of
Tree Genetics and Genomes
Citation
Boccacci, Paolo, Maria Aramini, Matthew Ordidge, Theo J. L. van Hintum, Daniela Torello Marinoni, Nadia Valentini, and Jean-Paul Sarraquigne et al. 2021. "Comparison Of Selection Methods For The Establishment Of A Core Collection Using SSR Markers For Hazelnut (Corylus Avellana L.) Accessions From European Germplasm Repositories". Tree Genetics & Genomes 17 (6). doi:10.1007/s11295-021-01526-7.
Program
Fructicultura
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2831]
Rights
Copyright © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature