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Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance

2018-02-01Artigo científico Acesso aberto
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dc.contributor.authorAlves, Mara Lisa
dc.contributor.authorBelo, Maria
dc.contributor.authorCarbas, Bruna
dc.contributor.authorBrites, Cláudia
dc.contributor.authorPaulo, Manuel
dc.contributor.authorMendes-Moreira, Pedro
dc.contributor.authorBrites, Carla
dc.contributor.authorBronze, Maria do Rosário
dc.contributor.authorŠatović, Zlatko
dc.contributor.authorVaz Patto, Maria Carlota
dc.contributor.institutionInstituto de Tecnologia Química e Biológica António Xavier (ITQB)
dc.contributor.institutionBioresources 4 Sustainability (GREEN-IT)
dc.contributor.pblWiley
dc.date.accessioned2019-04-24T22:20:59Z
dc.date.available2019-04-24T22:20:59Z
dc.date.issued2018-02-01
dc.description.abstractModern maize breeding programs gave rise to genetically uniform varieties that can affect maize's capacity to cope with increasing climate unpredictability. Maize populations, genetically more heterogeneous, can evolve and better adapt to a broader range of edaphic–climatic conditions. These populations usually suffer from low yields; it is therefore desirable to improve their agronomic performance while maintaining their valuable diversity levels. With this objective, a long-term participatory breeding/on-farm conservation program was established in Portugal. In this program, maize populations were subject to stratified mass selection. This work aimed to estimate the effect of on-farm stratified mass selection on the agronomic performance, quality, and molecular diversity of two historical maize populations. Multilocation field trials, comparing the initial populations with the derived selection cycles, showed that this selection methodology led to agronomic improvement for one of the populations. The molecular diversity analysis, using microsatellites, revealed that overall genetic diversity in both populations was maintained throughout selection. The comparison of quality parameters between the initial populations and the derived selection cycles was made using kernel from a common-garden experiment. This analysis showed that the majority of the quality traits evaluated progressed erratically over time. In conclusion, this breeding approach, through simple and low-cost methodologies, proved to be an alternative strategy for genetic resources’ on-farm conservation.en
dc.description.versionpublished
dc.format.extent17
dc.format.extent868449
dc.identifier.doi10.1111/eva.12549
dc.identifier.issn1752-4563
dc.identifier.otherPURE: 6182357
dc.identifier.otherPURE UUID: c7ac78c6-9679-4fc9-a0d6-de1588be76c3
dc.identifier.otherScopus: 85031319507
dc.identifier.urihttp://www.scopus.com/inward/record.url?scp=85031319507&partnerID=8YFLogxK
dc.identifier.urlhttps://www.scopus.com/pages/publications/85031319507
dc.language.isoeng
dc.peerreviewedyes
dc.subjectear traits
dc.subjectmicrosatellites
dc.subjectmolecular diversity
dc.subjecton-farm conservation
dc.subjectopen-pollinated populations
dc.subjectparticipatory plant breeding
dc.subjectyield
dc.subjectZea mays L
dc.subjectEcology, Evolution, Behavior and Systematics
dc.subjectGenetics
dc.subjectGeneral Agricultural and Biological Sciences
dc.titleLong-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performanceen
dc.typejournal article
degois.publication.firstPage254
degois.publication.issue2
degois.publication.lastPage270
degois.publication.titleEvolutionary Applications
degois.publication.volume11
dspace.entity.typePublication
rcaap.rightsopenAccess

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