Genomic assessment of white clover and perennial ryegrass genetic resources
| Autor: | Anna Larking, Mingshu Cao, Andrew G. Griffiths, Marty J. Faville, Abdul Baten, Won Hong, Rachael Ashby, Michelle Williamson, Zane Webber, Kioumars Ghamkhar |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0303 health sciences White (horse) Perennial plant Soil Science Plant Science Biology 01 natural sciences 03 medical and health sciences Agronomy Genetic resources Agronomy and Crop Science Ecology Evolution Behavior and Systematics 030304 developmental biology 010606 plant biology & botany Nature and Landscape Conservation |
| Zdroj: | Journal of New Zealand Grasslands. 82:27-34 |
| ISSN: | 2463-2880 2463-2872 |
| DOI: | 10.33584/jnzg.2020.82.437 |
| Popis: | Forage resources conserved in genebanks, such as the Margot Forde Germplasm Centre (MFGC; PalmerstonNorth), are reservoirs of genetic diversity important for the development of cultivars adapted to abiotic stresses and environmental constraints. Genomic tools, including genotyping-by-sequencing (GBS), can support identification of manageable subsets (core collections) that are genetically representative of these large germplasm collections, for phenotypic characterisation. We used GBS to generate SNP (single nucleotide polymorphism) profiles for 172 white clover (WC) and 357 perennial ryegrass (PRG) MFGC-sourced accessions and estimated genetic relationships amongst accessions. In WC, accessions aligned along an east-west transect from Kazakhstan to Spain, identifying major diversity in Caucasus/Central Asia and Iberian Peninsula. A key feature was the reduced diversity present in New Zealand (NZL) accessions. Similarly, for PRG, most NZL accessions coalesced as one group, distinct from large clusters associated with the Iberian Peninsula, Italy and eastern Mediterranean/Caucasian region. These results emphasise the relatively narrow genetic diversity in NZL WC and PRG, and the broad extent of largely unexploited global diversity. Capturing global genetic variation incore collections will support pre-breeding programmes to mobilise novel genetic variation into New Zealand-adapted genetic backgrounds, enabling development of cultivars with non-traditional traits including enhancedclimate resilience and environmental performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|