Harnessing exotic germplasm for red clover improvement: Tracking genomic introgression and deploying genomic selection
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Le résumé fourni par la source
Abstract Red clover ( Trifolium pratense L.) is a globally important temperate forage legume. Its symbiosis with soil‐borne rhizobia enables nitrogen fixation, and its ability to produce quality forage under diverse soil conditions enhances pasture productivity, particularly during water deficits. With increasing climate‐related stresses, harnessing adaptive traits absent in current cultivars is critical. Genebanks conserve diverse red clover germplasm, providing genetic variation for agronomic and adaptive traits. In this study, we introgressed novel germplasm into locally adapted cultivars to track the inheritance of allelic variants using genotyping‐by‐sequencing. Multi‐location, multi‐year trials evaluated half‐sib families (generation two [Gen 2]) two generations removed from the exotic germplasm (genereation zero [Gen 0]) against local cultivars. Several Gen 2 populations matched or outperformed local cultivars and exhibited a moderate family mean heritability ( h 2 > 0.40) for most traits. Integrating genomic, phenotypic, and environmental data, 77 bioclimatic‐associated single nucleotide polymorphisms (SNPs) were identified, of which 35 SNPs and 27 associated genes were significantly linked to trait expression. By using the original germplasm (Gen 0) as a training population and the derived half‐sib families (Gen 2) as a validation population, genomic prediction models were developed to calculate prediction accuracies for key agronomic traits. Biomass and plot density traits showed high predictive abilities and the highest prediction accuracies across generations. This study demonstrates a route by which genetic diversity from genebanks can be successfully incorporated into local populations, enabling evaluation and selection of key traits. The identified molecular markers and genomic prediction models provide a pathway to efficiently develop climate‐adaptive red clover cultivars.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Harnessing exotic germplasm for red clover improvement: Tracking genomic introgression and deploying genomic selection
- Date Crossref
- 18/08/2026
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Lincoln University pays non établi dans la noticeUniversité ou école supérieure
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Lincoln University - Pennsylvania pays non établi dans la noticeUniversité ou école supérieure
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Bioeconomy Science Institute pays non établi dans la noticeOrganisme public
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PGG Wrightson Seeds (New Zealand) pays non établi dans la noticeEntreprise
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University of Canterbury Radiata Pine Breeding Company pays non établi dans la noticeUniversité ou école supérieure
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AgResearch pays non établi dans la noticeOrganisme public
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The University of Queensland pays non établi dans la noticeUniversité ou école supérieure
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Agriculture and Food pays non établi dans la noticeStructure de recherche
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PGG Wrightson Seeds Limited Palmerston North New Zealand pays non établi dans la noticeInstitution
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Radiata Pine Breeding Company pays non établi dans la noticeEntreprise
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Bioeconomy Science Centre pays non établi dans la noticeInstitution
Lincoln University, Lincoln University - Pennsylvania et Bioeconomy Science Institute, avec 8 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.