Cowpea Physiological Responses to Terminal Drought

Detalhes bibliográficos
Autor(a) principal: Nunes, Cátia
Data de Publicação: 2022
Outros Autores: Moreira, Rita, Pais, Isabel, Semedo, José, Simões, Fernanda, Veloso, Maria Manuela, Scotti-Campos, Paula
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/151022
Resumo: Funding Information: This research was funded by Fundação para a Ciência e a Tecnologia (FCT) and FEDER through ALT20-03-0145-FEDER-029867. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
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spelling Cowpea Physiological Responses to Terminal DroughtComparison between Four Landraces and a Commercial VarietyCommercial varietyCowpeaLandraceProductivityWater deficitEcology, Evolution, Behavior and SystematicsEcologyPlant ScienceSDG 2 - Zero HungerSDG 13 - Climate ActionFunding Information: This research was funded by Fundação para a Ciência e a Tecnologia (FCT) and FEDER through ALT20-03-0145-FEDER-029867. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.Cowpea (Vigna unguiculata) is a robust legume; nevertheless, yield is always affected by drought, especially when it occurs during reproductive growth and seed filling. Considered a key crop in the effort to attain food security, and a suitable crop for a scenario of climate change, modern disregard for cowpea landraces is particularly detrimental as it causes genetic variability loss, compromising breeding efforts. To contribute to the evaluation of the cowpea germplasm, four Portuguese landraces (L1, L2, L3, L4) were compared with a commercial variety (CV) to evaluate their physiological responses to terminal drought and their inter-variation on productivity, under semi-controlled conditions. Despite no differences in relative water content (RWC) between the CV and the landraces under water deficit (WD), differences in leaf water potential (Ψ) defined the CV as having an isohydric control of stomata in contrast with anisohydric control for landraces. There was an identical decrease in the photosynthetic rate for all plants under stress, caused by both stomatal and non-stomatal limitations, namely, damages at the level of photosystem II as indicated by fluorescence measurements. Instantaneous water use efficiency (iWUE) was improved with stress in L1 and L3. Maintenance of higher relative chlorophyll content for longer periods in the CV revealed a stay-green phenotype. The slim differences observed in terms of stomatal control, iWUE and progression of senescence between the CV and the landraces under WD led to quite important differences in terms of productivity, as inferred from improved yield (number of pods and number of grains per plant). This is a clear result of pragmatic on-farm selection. On one hand it shows that small differences in stomatal responses or water saving strategies under WD may lead to desirable outcomes and should therefore be considered during breeding. On the other hand, it suggests that other traits could be explored in view of drought adaptation. These results highlight the need to preserve and characterize as many genetic pools as possible within a species.GeoBioTec - Geobiociências, Geoengenharias e GeotecnologiasRUNNunes, CátiaMoreira, RitaPais, IsabelSemedo, JoséSimões, FernandaVeloso, Maria ManuelaScotti-Campos, Paula2023-03-21T22:28:01Z2022-02-222022-02-22T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/151022eng2223-7747PURE: 56516896https://doi.org/10.3390/plants11050593info: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:RCAAP2024-03-11T05:33:27Zoai:run.unl.pt:10362/151022Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:54:25.463945Repositório 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 Cowpea Physiological Responses to Terminal Drought
Comparison between Four Landraces and a Commercial Variety
title Cowpea Physiological Responses to Terminal Drought
spellingShingle Cowpea Physiological Responses to Terminal Drought
Nunes, Cátia
Commercial variety
Cowpea
Landrace
Productivity
Water deficit
Ecology, Evolution, Behavior and Systematics
Ecology
Plant Science
SDG 2 - Zero Hunger
SDG 13 - Climate Action
title_short Cowpea Physiological Responses to Terminal Drought
title_full Cowpea Physiological Responses to Terminal Drought
title_fullStr Cowpea Physiological Responses to Terminal Drought
title_full_unstemmed Cowpea Physiological Responses to Terminal Drought
title_sort Cowpea Physiological Responses to Terminal Drought
author Nunes, Cátia
author_facet Nunes, Cátia
Moreira, Rita
Pais, Isabel
Semedo, José
Simões, Fernanda
Veloso, Maria Manuela
Scotti-Campos, Paula
author_role author
author2 Moreira, Rita
Pais, Isabel
Semedo, José
Simões, Fernanda
Veloso, Maria Manuela
Scotti-Campos, Paula
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias
RUN
dc.contributor.author.fl_str_mv Nunes, Cátia
Moreira, Rita
Pais, Isabel
Semedo, José
Simões, Fernanda
Veloso, Maria Manuela
Scotti-Campos, Paula
dc.subject.por.fl_str_mv Commercial variety
Cowpea
Landrace
Productivity
Water deficit
Ecology, Evolution, Behavior and Systematics
Ecology
Plant Science
SDG 2 - Zero Hunger
SDG 13 - Climate Action
topic Commercial variety
Cowpea
Landrace
Productivity
Water deficit
Ecology, Evolution, Behavior and Systematics
Ecology
Plant Science
SDG 2 - Zero Hunger
SDG 13 - Climate Action
description Funding Information: This research was funded by Fundação para a Ciência e a Tecnologia (FCT) and FEDER through ALT20-03-0145-FEDER-029867. Publisher Copyright: © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
publishDate 2022
dc.date.none.fl_str_mv 2022-02-22
2022-02-22T00:00:00Z
2023-03-21T22:28:01Z
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/10362/151022
url http://hdl.handle.net/10362/151022
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2223-7747
PURE: 56516896
https://doi.org/10.3390/plants11050593
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.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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