Ontology highlight
ABSTRACT: Key message
We identified marker-trait associations for key faba bean agronomic traits and genomic signatures of selection within a global germplasm collection. Faba bean (Vicia faba L.) is a high-protein grain legume crop with great potential for sustainable protein production. However, little is known about the genetics underlying trait diversity. In this study, we used 21,345 high-quality SNP markers to genetically characterize 2678 faba bean genotypes. We performed genome-wide association studies of key agronomic traits using a seven-parent-MAGIC population and detected 238 significant marker-trait associations linked to 12 traits of agronomic importance. Sixty-five of these were stable across multiple environments. Using a non-redundant diversity panel of 685 accessions from 52 countries, we identified three subpopulations differentiated by geographical origin and 33 genomic regions subjected to strong diversifying selection between subpopulations. We found that SNP markers associated with the differentiation of northern and southern accessions explained a significant proportion of agronomic trait variance in the seven-parent-MAGIC population, suggesting that some of these traits were targets of selection during breeding. Our findings point to genomic regions associated with important agronomic traits and selection, facilitating faba bean genomics-based breeding.
SUBMITTER: Skovbjerg CK
PROVIDER: S-EPMC10115707 | biostudies-literature | 2023 Apr
REPOSITORIES: biostudies-literature
Skovbjerg Cathrine Kiel CK Angra Deepti D Robertson-Shersby-Harvie Tom T Kreplak Jonathan J Keeble-Gagnère Gabriel G Kaur Sukhjiwan S Ecke Wolfgang W Windhorst Alex A Nielsen Linda Kærgaard LK Schiemann Andrea A Knudsen Jens J Gutierrez Natalia N Tagkouli Vasiliki V Fechete Lavinia Ioana LI Janss Luc L Stougaard Jens J Warsame Ahmed A Alves Sheila S Khazaei Hamid H Link Wolfgang W Torres Ana Maria AM O'Sullivan Donal Martin DM Andersen Stig Uggerhøj SU
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik 20230419 5
<h4>Key message</h4>We identified marker-trait associations for key faba bean agronomic traits and genomic signatures of selection within a global germplasm collection. Faba bean (Vicia faba L.) is a high-protein grain legume crop with great potential for sustainable protein production. However, little is known about the genetics underlying trait diversity. In this study, we used 21,345 high-quality SNP markers to genetically characterize 2678 faba bean genotypes. We performed genome-wide associ ...[more]