Water stress on vegetative and reproductive stages of two cowpea cultivars

Detalhes bibliográficos
Autor(a) principal: Rebouças Ferreira, Luiz Gonzaga
Data de Publicação: 1991
Outros Autores: Costa, José Osório, de Albuquerque, Ivan Martins
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/3438
Resumo: Field studies were conducted to examine cowpea (Vigna unguiculata (L.) Walp) adaptative responses to water stress and to improve water management strategies in semi-arid zones. Two cowpea (BR-1 and Pitiúba) cultivars were subjected to three irrigation treatments using a gated pipe system. The treatments were full irrigation (control) and drought stress on vegetative or reproductive (flowering and pod maturation) stages. The protoplasmatic tolerance was correlated with modifications of leaf water potential, leaf area and total shoot dry weight. All plants showed effective mechanisms of drought avoidance on conditions of soil water stress and high evaporative demand keeping leaf water potential above -1.2 MPa. Due to the efficient drought escape mechanism, water stress in both growth stages was not able to induce significant yield reductions.
id EMBRAPA-4_d6bd9dc7874b0782c999799243d8dd8b
oai_identifier_str oai:ojs.seer.sct.embrapa.br:article/3438
network_acronym_str EMBRAPA-4
network_name_str Pesquisa Agropecuária Brasileira (Online)
repository_id_str
spelling Water stress on vegetative and reproductive stages of two cowpea cultivarsEstresse hídrico nas fases vegetativa e reprodutiva de duas cultivares de caupiVigna unguiculata; drought adaptation; irrigation; flowering; yieldVigna unguiculata; adaptação à seca; irrigação; floração; produçãoField studies were conducted to examine cowpea (Vigna unguiculata (L.) Walp) adaptative responses to water stress and to improve water management strategies in semi-arid zones. Two cowpea (BR-1 and Pitiúba) cultivars were subjected to three irrigation treatments using a gated pipe system. The treatments were full irrigation (control) and drought stress on vegetative or reproductive (flowering and pod maturation) stages. The protoplasmatic tolerance was correlated with modifications of leaf water potential, leaf area and total shoot dry weight. All plants showed effective mechanisms of drought avoidance on conditions of soil water stress and high evaporative demand keeping leaf water potential above -1.2 MPa. Due to the efficient drought escape mechanism, water stress in both growth stages was not able to induce significant yield reductions.Estudos de campo foram conduzidos para determinar as respostas adaptativas de caupi (Vigna unguiculata (L.) Walp) ao estresse hídrico e melhorar as técnicas de manejo nas regiões semi-áridas. Duas cultivares de caupi (BR-1 e Pitiúba) foram submetidas a três diferentes tratamentos de irrigação pelo sistema de tubos janelados. Os tratamentos consistiram em irrigações aplicadas durante as fases vegetativa ou reprodutiva (floração e maturação das vagens). A tolerância protoplasmática foi correlacionada com as variações do potencial hídrico das folhas, da área foliar e peso seco total da parte aérea. As plantas exibiram intensa fuga à seca na presença de déficit de água no solo e alta demanda evaporativa, com o potencial hídrico permanecendo acima de -1,2 MPa. Devido à eficiência dos mecanismos de fuga ou escape à seca, os déficits hídricos, em ambos os estádios de crescimento, não foram capazes de induzir reduções significativas na produção.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraRebouças Ferreira, Luiz GonzagaCosta, José Osóriode Albuquerque, Ivan Martins1991-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/3438Pesquisa Agropecuaria Brasileira; v.26, n.7, jul. 1991; 1049-1055Pesquisa Agropecuária Brasileira; v.26, n.7, jul. 1991; 1049-10551678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/3438/771info:eu-repo/semantics/openAccess2009-12-16T18:14:13Zoai:ojs.seer.sct.embrapa.br:article/3438Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2009-12-16T18:14:13Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Water stress on vegetative and reproductive stages of two cowpea cultivars
Estresse hídrico nas fases vegetativa e reprodutiva de duas cultivares de caupi
title Water stress on vegetative and reproductive stages of two cowpea cultivars
spellingShingle Water stress on vegetative and reproductive stages of two cowpea cultivars
Rebouças Ferreira, Luiz Gonzaga
Vigna unguiculata; drought adaptation; irrigation; flowering; yield
Vigna unguiculata; adaptação à seca; irrigação; floração; produção
title_short Water stress on vegetative and reproductive stages of two cowpea cultivars
title_full Water stress on vegetative and reproductive stages of two cowpea cultivars
title_fullStr Water stress on vegetative and reproductive stages of two cowpea cultivars
title_full_unstemmed Water stress on vegetative and reproductive stages of two cowpea cultivars
title_sort Water stress on vegetative and reproductive stages of two cowpea cultivars
author Rebouças Ferreira, Luiz Gonzaga
author_facet Rebouças Ferreira, Luiz Gonzaga
Costa, José Osório
de Albuquerque, Ivan Martins
author_role author
author2 Costa, José Osório
de Albuquerque, Ivan Martins
author2_role author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Rebouças Ferreira, Luiz Gonzaga
Costa, José Osório
de Albuquerque, Ivan Martins
dc.subject.por.fl_str_mv Vigna unguiculata; drought adaptation; irrigation; flowering; yield
Vigna unguiculata; adaptação à seca; irrigação; floração; produção
topic Vigna unguiculata; drought adaptation; irrigation; flowering; yield
Vigna unguiculata; adaptação à seca; irrigação; floração; produção
description Field studies were conducted to examine cowpea (Vigna unguiculata (L.) Walp) adaptative responses to water stress and to improve water management strategies in semi-arid zones. Two cowpea (BR-1 and Pitiúba) cultivars were subjected to three irrigation treatments using a gated pipe system. The treatments were full irrigation (control) and drought stress on vegetative or reproductive (flowering and pod maturation) stages. The protoplasmatic tolerance was correlated with modifications of leaf water potential, leaf area and total shoot dry weight. All plants showed effective mechanisms of drought avoidance on conditions of soil water stress and high evaporative demand keeping leaf water potential above -1.2 MPa. Due to the efficient drought escape mechanism, water stress in both growth stages was not able to induce significant yield reductions.
publishDate 1991
dc.date.none.fl_str_mv 1991-07-01
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/3438
url https://seer.sct.embrapa.br/index.php/pab/article/view/3438
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/3438/771
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 Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.26, n.7, jul. 1991; 1049-1055
Pesquisa Agropecuária Brasileira; v.26, n.7, jul. 1991; 1049-1055
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
_version_ 1793416708414767104

Registros relacionados