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

Detalhes bibliográficos
Autor(a) principal: Alves, Mara Lisa
Data de Publicação: 2018
Outros Autores: Belo, Maria, Carbas, Bruna, Brites, Cláudia, Paulo, Manuel, Mendes-Moreira, Pedro, Brites, Carla, Bronze, Maria do Rosário, Šatović, Zlatko, Vaz Patto, Maria Carlota
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://doi.org/10.1111/eva.12549
Resumo: Modern 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.
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spelling Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performanceear traitsmicrosatellitesmolecular diversityon-farm conservationopen-pollinated populationsparticipatory plant breedingyieldZea mays LEcology, Evolution, Behavior and SystematicsGeneticsAgricultural and Biological Sciences(all)Modern 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.Instituto de Tecnologia Química e Biológica António Xavier (ITQB)Bioresources 4 Sustainability (GREEN-IT)RUNAlves, Mara LisaBelo, MariaCarbas, BrunaBrites, CláudiaPaulo, ManuelMendes-Moreira, PedroBrites, CarlaBronze, Maria do RosárioŠatović, ZlatkoVaz Patto, Maria Carlota2019-04-24T22:20:59Z2018-02-012018-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article17application/pdfhttps://doi.org/10.1111/eva.12549eng1752-4563PURE: 6182357http://www.scopus.com/inward/record.url?scp=85031319507&partnerID=8YFLogxKhttps://doi.org/10.1111/eva.12549info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T04:31:58Zoai:run.unl.pt:10362/67609Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:34:38.732243Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
title Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
spellingShingle Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
Alves, Mara Lisa
ear traits
microsatellites
molecular diversity
on-farm conservation
open-pollinated populations
participatory plant breeding
yield
Zea mays L
Ecology, Evolution, Behavior and Systematics
Genetics
Agricultural and Biological Sciences(all)
title_short Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
title_full Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
title_fullStr Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
title_full_unstemmed Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
title_sort Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
author Alves, Mara Lisa
author_facet Alves, Mara Lisa
Belo, Maria
Carbas, Bruna
Brites, Cláudia
Paulo, Manuel
Mendes-Moreira, Pedro
Brites, Carla
Bronze, Maria do Rosário
Šatović, Zlatko
Vaz Patto, Maria Carlota
author_role author
author2 Belo, Maria
Carbas, Bruna
Brites, Cláudia
Paulo, Manuel
Mendes-Moreira, Pedro
Brites, Carla
Bronze, Maria do Rosário
Šatović, Zlatko
Vaz Patto, Maria Carlota
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Instituto de Tecnologia Química e Biológica António Xavier (ITQB)
Bioresources 4 Sustainability (GREEN-IT)
RUN
dc.contributor.author.fl_str_mv Alves, Mara Lisa
Belo, Maria
Carbas, Bruna
Brites, Cláudia
Paulo, Manuel
Mendes-Moreira, Pedro
Brites, Carla
Bronze, Maria do Rosário
Šatović, Zlatko
Vaz Patto, Maria Carlota
dc.subject.por.fl_str_mv ear traits
microsatellites
molecular diversity
on-farm conservation
open-pollinated populations
participatory plant breeding
yield
Zea mays L
Ecology, Evolution, Behavior and Systematics
Genetics
Agricultural and Biological Sciences(all)
topic ear traits
microsatellites
molecular diversity
on-farm conservation
open-pollinated populations
participatory plant breeding
yield
Zea mays L
Ecology, Evolution, Behavior and Systematics
Genetics
Agricultural and Biological Sciences(all)
description Modern 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.
publishDate 2018
dc.date.none.fl_str_mv 2018-02-01
2018-02-01T00:00:00Z
2019-04-24T22:20:59Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://doi.org/10.1111/eva.12549
url https://doi.org/10.1111/eva.12549
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1752-4563
PURE: 6182357
http://www.scopus.com/inward/record.url?scp=85031319507&partnerID=8YFLogxK
https://doi.org/10.1111/eva.12549
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 17
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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