Long-term on-farm participatory maize breeding by stratified mass selection retains molecular diversity while improving agronomic performance
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , , , , , , , |
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. |
id |
RCAP_7772d44613a4be38bd81fea68821c009 |
---|---|
oai_identifier_str |
oai:run.unl.pt:10362/67609 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
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) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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 |
repository.mail.fl_str_mv |
|
_version_ |
1799137968152117248 |