P. Boccacci (Author), Maria Aramini (Author), Matthew Ordidge (Author), Theo J. L. van Hintum (Author), Daniela Torello Marinoni (Author), N. Valentini (Author), Jean-Paul Sarraquigne (Author), Anita Solar (Author), M. Rovira (Author), L. Bacchetta (Author), R. Botta (Author)

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.

Keywords

leska;corylus avellana;genska banka;mikrosatelitski markerji;genotipi;hazelnut;plant genetic resources;germplasm management;SSR markers;microsatellites;germplasm repositories;in situ conservation;ex situ conservation;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 634.5
COBISS: 86288899 Link will open in a new window
ISSN: 1614-2942
Views: 159
Downloads: 102
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Other data

Secondary language: Slovenian
Secondary keywords: leska;corylus avellana;genska banka;mikrosatelitski markerji;genotipi;
Pages: str. 1-14 (48)
Volume: ǂVol. ǂ17
Issue: ǂIss. ǂ6
Chronology: 2021
DOI: 10.1007/s11295-021-01526-7
ID: 14031654