Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/18816 |
Resumo: | Participatory selection—exploiting specific adaptation traits to target environments—helps to guarantees yield stability in a changing climate, in particular under low-input or organic production. The purpose of the present study was to identify reliable, low-cost, fast and easy-to-use tools to complement traditional selection for an e ective participatory improvement of maize populations for drought resistance/tolerance. The morphological and eco-physiological responses to progressive water deprivation of four maize open-pollinated populations were assessed in both controlled and field conditions. Thermography and Chl a fluorescence, validated by gas exchange indicated that the best performing populations under water-deficit conditions were ‘Fandango’ and to a less extent ‘Pigarro’ (both from participatory breeding). These populations showed high yield potential under optimal and reduced watering. Under moderate water stress, ‘Bilhó’, originating from an altitude of 800 m, is one of the most resilient populations. The experiments under chamber conditions confirmed the existence of genetic variability within ‘Pigarro’ and ‘Fandango’ for drought response relevant for future populations breeding. Based on the easiness to score and population discriminatory power, the performance index (PIABS) emerges as an integrative phenotyping tool to use as a refinement of the common participatory maize selection especially under moderate water deprivation |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selectionChl a fluorescencefield phenotypingleaf gas exchangeopen-pollinated populationsparticipatory plant breedingperformance indexwater deficitZea maysParticipatory selection—exploiting specific adaptation traits to target environments—helps to guarantees yield stability in a changing climate, in particular under low-input or organic production. The purpose of the present study was to identify reliable, low-cost, fast and easy-to-use tools to complement traditional selection for an e ective participatory improvement of maize populations for drought resistance/tolerance. The morphological and eco-physiological responses to progressive water deprivation of four maize open-pollinated populations were assessed in both controlled and field conditions. Thermography and Chl a fluorescence, validated by gas exchange indicated that the best performing populations under water-deficit conditions were ‘Fandango’ and to a less extent ‘Pigarro’ (both from participatory breeding). These populations showed high yield potential under optimal and reduced watering. Under moderate water stress, ‘Bilhó’, originating from an altitude of 800 m, is one of the most resilient populations. The experiments under chamber conditions confirmed the existence of genetic variability within ‘Pigarro’ and ‘Fandango’ for drought response relevant for future populations breeding. Based on the easiness to score and population discriminatory power, the performance index (PIABS) emerges as an integrative phenotyping tool to use as a refinement of the common participatory maize selection especially under moderate water deprivationMDPIRepositório da Universidade de LisboaLeitão, Susana T.Ferreira, EmanuelBicho, M.CatarinaAlves, Mara L.Pintado, DuarteSantos, DanielaMendes-Moreira, PedroAraújo, Susana S.Costa, José MiguelPatto, Maria Carlota Vaz2019-11-21T11:08:52Z20192019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/18816engSustainability 2019, 11, 608110.3390/su11216081info: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:RCAAP2023-03-06T14:48:22Zoai:www.repository.utl.pt:10400.5/18816Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:03:48.627588Repositório 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 |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection |
title |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection |
spellingShingle |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection Leitão, Susana T. Chl a fluorescence field phenotyping leaf gas exchange open-pollinated populations participatory plant breeding performance index water deficit Zea mays |
title_short |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection |
title_full |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection |
title_fullStr |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection |
title_full_unstemmed |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection |
title_sort |
Maize open-pollinated populations physiological improvement: validating tools for drought response participatory selection |
author |
Leitão, Susana T. |
author_facet |
Leitão, Susana T. Ferreira, Emanuel Bicho, M.Catarina Alves, Mara L. Pintado, Duarte Santos, Daniela Mendes-Moreira, Pedro Araújo, Susana S. Costa, José Miguel Patto, Maria Carlota Vaz |
author_role |
author |
author2 |
Ferreira, Emanuel Bicho, M.Catarina Alves, Mara L. Pintado, Duarte Santos, Daniela Mendes-Moreira, Pedro Araújo, Susana S. Costa, José Miguel Patto, Maria Carlota Vaz |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Leitão, Susana T. Ferreira, Emanuel Bicho, M.Catarina Alves, Mara L. Pintado, Duarte Santos, Daniela Mendes-Moreira, Pedro Araújo, Susana S. Costa, José Miguel Patto, Maria Carlota Vaz |
dc.subject.por.fl_str_mv |
Chl a fluorescence field phenotyping leaf gas exchange open-pollinated populations participatory plant breeding performance index water deficit Zea mays |
topic |
Chl a fluorescence field phenotyping leaf gas exchange open-pollinated populations participatory plant breeding performance index water deficit Zea mays |
description |
Participatory selection—exploiting specific adaptation traits to target environments—helps to guarantees yield stability in a changing climate, in particular under low-input or organic production. The purpose of the present study was to identify reliable, low-cost, fast and easy-to-use tools to complement traditional selection for an e ective participatory improvement of maize populations for drought resistance/tolerance. The morphological and eco-physiological responses to progressive water deprivation of four maize open-pollinated populations were assessed in both controlled and field conditions. Thermography and Chl a fluorescence, validated by gas exchange indicated that the best performing populations under water-deficit conditions were ‘Fandango’ and to a less extent ‘Pigarro’ (both from participatory breeding). These populations showed high yield potential under optimal and reduced watering. Under moderate water stress, ‘Bilhó’, originating from an altitude of 800 m, is one of the most resilient populations. The experiments under chamber conditions confirmed the existence of genetic variability within ‘Pigarro’ and ‘Fandango’ for drought response relevant for future populations breeding. Based on the easiness to score and population discriminatory power, the performance index (PIABS) emerges as an integrative phenotyping tool to use as a refinement of the common participatory maize selection especially under moderate water deprivation |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-11-21T11:08:52Z 2019 2019-01-01T00:00:00Z |
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 |
http://hdl.handle.net/10400.5/18816 |
url |
http://hdl.handle.net/10400.5/18816 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sustainability 2019, 11, 6081 10.3390/su11216081 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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 |
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1799131129395019776 |