Pedigree analysis of pre-breeding efforts in Trifolium spp. germplasm in New Zealand

dc.contributor.authorEgan, LM
dc.contributor.authorHofmann, RW
dc.contributor.authorSeguin, P
dc.contributor.authorGhamkhar, K
dc.contributor.authorHoyos-Villegas, V
dc.coverage.spatialEngland
dc.date.accessioned2021-01-25T01:06:33Z
dc.date.available2020-09-14
dc.date.issued2020
dc.date.submitted2020-08-30
dc.description.abstractBackground: Prebreeding in plants is the activity designed to identify useful characteristics from wild germplasm and its integration in breeding programs. Prebreeding aims to introduce new variation into the populations of a species of interest. Pedigree analysis is a valuable tool for evaluation of variation in genebanks where pedigree maps are used to visualize and describe population structure and variation within these populations. Margot Forde Germplasm Centre (MFGC) is New Zealand’s national forage genebank and holds a collection of ~ 75 species of the genus Trifolium, of which only a dozen have been taken through prebreeding programs. The main objective of this study was to construct pedigree maps and analyse patterns of relatedness for seven minor Trifolium species accessions contained at the MFGC. These species are Trifolium ambiguum, Trifolium arvense, Trifolium dubium, Trifolium hybridum, Trifolium medium, Trifolium subterraneum and the Trifolium repens x Trifolium occidentale interspecific hybrids. We present a history of Trifolium spp. prebreeding in New Zealand and inform breeders of possible alternative forage species to use. Results: Pedigree data from accessions introduced between 1950 and 2016 were used and filtered based on breeding activity. Kinship levels among Trifolium spp. remained below 8% and no inbreeding was found. Influential ancestors that contributed largely to populations structure were identified. The Australian cultivar ‘Monaro’ had a strong influence over the whole population of accessions in T. ambiguum. T. subterraneum and T. repens x T. occidentale had the largest number of generations (3). T. ambiguum and T. medium had the highest cumulative kinship across the decades. Conclusions: We conclude that there are high levels of diversity in the seven Trifolium spp. studied. However, collection and prebreeding efforts must be strengthened to maximize utilization and bring useful genetic variation.
dc.format.extent13 pages
dc.format.mediumElectronic
dc.identifier10.1186/s12863-020-00912-9
dc.identifierhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000571914500002&DestLinkType=FullRecord&DestApp=WOS
dc.identifier.doi10.1186/s12863-020-00912-9
dc.identifier.eissn1471-2156
dc.identifier.issn1471-2156
dc.identifier.other32928105 (pubmed)
dc.identifier.urihttps://hdl.handle.net/10182/13264
dc.language.isoen
dc.publisherBMC (part of Springer Nature)
dc.relationThe original publication is available from BMC (part of Springer Nature) - https://doi.org/10.1186/s12863-020-00912-9 - http://dx.doi.org/10.1186/s12863-020-00912-9
dc.relation.isPartOfBMC Genetics
dc.relation.urihttps://doi.org/10.1186/s12863-020-00912-9
dc.rights© The Author(s). 2020
dc.rights.ccnameAttribution
dc.rights.ccurihttps://creativecommons.org/licenses/by/4.0/
dc.subjectpedigree
dc.subjectTrifolium
dc.subjectprebreeding
dc.subjectclover
dc.subjectrelatedness
dc.subjectgermplasm
dc.subjectancestors
dc.subject.anzsrcANZSRC::0703 Crop and Pasture Production
dc.subject.anzsrcANZSRC::0607 Plant Biology
dc.subject.anzsrcANZSRC::060705 Plant Physiology
dc.subject.anzsrc2020ANZSRC::3105 Genetics
dc.subject.meshTrifolium
dc.subject.meshPedigree
dc.subject.meshInbreeding
dc.subject.meshGenetics, Population
dc.subject.meshGenome, Plant
dc.subject.meshNew Zealand
dc.subject.meshGenetic Variation
dc.subject.meshPlant Breeding
dc.titlePedigree analysis of pre-breeding efforts in Trifolium spp. germplasm in New Zealand
dc.typeJournal Article
lu.contributor.unitLU
lu.contributor.unitLU|Agriculture and Life Sciences
lu.contributor.unitLU|Agriculture and Life Sciences|WFMB
lu.contributor.unitLU|Research Management Office
lu.contributor.unitLU|Research Management Office|OLD QE18
lu.identifier.orcid0000-0002-1804-2319
pubs.article-number104
pubs.issue1
pubs.notesDate of acceptance: 30 Aug 2020
pubs.publication-statusPublished online
pubs.publisher-urlhttp://dx.doi.org/10.1186/s12863-020-00912-9
pubs.volume21
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