Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene

Detalhes bibliográficos
Autor(a) principal: Nascimento Junior, Vitor Camargo do
Data de Publicação: 2016
Outros Autores: Prete, Cássio Egidio Cavenagui, Nogueira, Marco Antonio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/23008
Resumo: The objective of this work was to assess the effects of 1‑methylcyclopropene (1‑MCP) on traits related with biological nitrogen fixation on 'BRS 268' soybean (Glycine max) subjected to water restriction. Plants were either exposed to drought between 32 (R2) and 47 (R3) days after sowing (DAS) or kept well‑watered, in combination with exposure or not to 1‑MCP. On the second day under drought (34 DAS), plants from both water conditions were exposed to 1‑MCP in a hermetically sealed chamber for 15 hours. Control plants, dry or well‑watered, that were not exposed to 1‑MCP were kept in a separate chamber. At 36 (R2) and 47 (R3) DAS, shoot and root dry weights, leaf area index, number and dry weight of nodules, total ureides in sap, and N concentration in leaves were assessed. From 47 DAS on, extra plants were well watered until physiological maturity (R8) and assessed for yield components. Water restriction increased ureides in sap and reduced N in leaves in R2; reduced the number and mass of nodules, shoot dry weight, and leaf area index in R3; and reduced the number of pods and seed mass of plants not exposed to 1‑MCP. However, when plants are exposed to 1‑MCP, there is an attenuation of water restriction effects.
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spelling Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropeneFixação biológica do nitrogênio em soja sob restrição hídrica e exposta ao 1‑metilciclopropenoBradyrhizobium; Glycine max; inhibitor of ethylene; nodulation; water stressBradyrhizobium; Glycine max; inibidores de etileno; nodulação; estresse hídricoThe objective of this work was to assess the effects of 1‑methylcyclopropene (1‑MCP) on traits related with biological nitrogen fixation on 'BRS 268' soybean (Glycine max) subjected to water restriction. Plants were either exposed to drought between 32 (R2) and 47 (R3) days after sowing (DAS) or kept well‑watered, in combination with exposure or not to 1‑MCP. On the second day under drought (34 DAS), plants from both water conditions were exposed to 1‑MCP in a hermetically sealed chamber for 15 hours. Control plants, dry or well‑watered, that were not exposed to 1‑MCP were kept in a separate chamber. At 36 (R2) and 47 (R3) DAS, shoot and root dry weights, leaf area index, number and dry weight of nodules, total ureides in sap, and N concentration in leaves were assessed. From 47 DAS on, extra plants were well watered until physiological maturity (R8) and assessed for yield components. Water restriction increased ureides in sap and reduced N in leaves in R2; reduced the number and mass of nodules, shoot dry weight, and leaf area index in R3; and reduced the number of pods and seed mass of plants not exposed to 1‑MCP. However, when plants are exposed to 1‑MCP, there is an attenuation of water restriction effects.O objetivo deste trabalho foi avaliar os efeitos do 1‑metilciclopropeno (1‑MCP) em parâmetros relacionados à fixação biológica de nitrogênio em soja (Glycine max) 'BRS 268' submetida à restrição hídrica. As plantas foram submetidas à seca entre 32 (R2) e 47 (R3) dias após a semeadura (DAS) ou mantidas bem irrigadas, em combinação com exposição ou não ao 1‑MCP. No segundo dia sob seca (34 DAS), as plantas de ambas as condições hídricas foram expostas ao 1‑MCP em câmara hermeticamente fechada por 15 horas. As plantas‑controle, sob restrição hídrica ou bem irrigadas, não expostas ao 1‑MCP foram mantidas em câmara separada. Aos 36 (R2) e 47 (R3) DAS, foram avaliados massa seca da parte aérea e das raízes, índice de área foliar, número e massa seca de nódulos, ureídos totais na seiva e concentração de N foliar. A partir dos 47 DAS, as plantas remanescentes foram mantidas bem irrigadas até a maturação fisiológica (R8) e os componentes de produção foram avaliados. A restrição hídrica aumentou os ureídos na seiva e reduziu o N foliar em R2; reduziu o número e a massa de nódulos, a massa seca da parte aérea e o índice de área foliar em R3; e reduziu o número de vagens e a massa de sementes em plantas sem exposição ao 1‑MCP. No entanto, quando as plantas são expostas ao 1‑MCP, há atenuação do efeito da restrição hídrica.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCapes, Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorCNPq, Conselho Nacional de Desenvolvimento Científico e TecnológicoCapes, Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorCNPq, Conselho Nacional de Desenvolvimento Científico e TecnológicoNascimento Junior, Vitor Camargo doPrete, Cássio Egidio CavenaguiNogueira, Marco Antonio2016-09-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/23008Pesquisa Agropecuaria Brasileira; v.51, n.7, jul. 2016; 818-823Pesquisa Agropecuária Brasileira; v.51, n.7, jul. 2016; 818-8231678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/23008/13388https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23008/15021https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23008/15022Direitos autorais 2016 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2016-09-26T18:50:57Zoai:ojs.seer.sct.embrapa.br:article/23008Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2016-09-26T18:50:57Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
Fixação biológica do nitrogênio em soja sob restrição hídrica e exposta ao 1‑metilciclopropeno
title Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
spellingShingle Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
Nascimento Junior, Vitor Camargo do
Bradyrhizobium; Glycine max; inhibitor of ethylene; nodulation; water stress
Bradyrhizobium; Glycine max; inibidores de etileno; nodulação; estresse hídrico
title_short Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
title_full Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
title_fullStr Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
title_full_unstemmed Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
title_sort Biological nitrogen fixation in soybean under water restriction and exposed to 1‑methylcyclopropene
author Nascimento Junior, Vitor Camargo do
author_facet Nascimento Junior, Vitor Camargo do
Prete, Cássio Egidio Cavenagui
Nogueira, Marco Antonio
author_role author
author2 Prete, Cássio Egidio Cavenagui
Nogueira, Marco Antonio
author2_role author
author
dc.contributor.none.fl_str_mv Capes, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico
Capes, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
CNPq, Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.contributor.author.fl_str_mv Nascimento Junior, Vitor Camargo do
Prete, Cássio Egidio Cavenagui
Nogueira, Marco Antonio
dc.subject.por.fl_str_mv Bradyrhizobium; Glycine max; inhibitor of ethylene; nodulation; water stress
Bradyrhizobium; Glycine max; inibidores de etileno; nodulação; estresse hídrico
topic Bradyrhizobium; Glycine max; inhibitor of ethylene; nodulation; water stress
Bradyrhizobium; Glycine max; inibidores de etileno; nodulação; estresse hídrico
description The objective of this work was to assess the effects of 1‑methylcyclopropene (1‑MCP) on traits related with biological nitrogen fixation on 'BRS 268' soybean (Glycine max) subjected to water restriction. Plants were either exposed to drought between 32 (R2) and 47 (R3) days after sowing (DAS) or kept well‑watered, in combination with exposure or not to 1‑MCP. On the second day under drought (34 DAS), plants from both water conditions were exposed to 1‑MCP in a hermetically sealed chamber for 15 hours. Control plants, dry or well‑watered, that were not exposed to 1‑MCP were kept in a separate chamber. At 36 (R2) and 47 (R3) DAS, shoot and root dry weights, leaf area index, number and dry weight of nodules, total ureides in sap, and N concentration in leaves were assessed. From 47 DAS on, extra plants were well watered until physiological maturity (R8) and assessed for yield components. Water restriction increased ureides in sap and reduced N in leaves in R2; reduced the number and mass of nodules, shoot dry weight, and leaf area index in R3; and reduced the number of pods and seed mass of plants not exposed to 1‑MCP. However, when plants are exposed to 1‑MCP, there is an attenuation of water restriction effects.
publishDate 2016
dc.date.none.fl_str_mv 2016-09-26
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/23008
url https://seer.sct.embrapa.br/index.php/pab/article/view/23008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/23008/13388
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23008/15021
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23008/15022
dc.rights.driver.fl_str_mv Direitos autorais 2016 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2016 Pesquisa Agropecuária Brasileira
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.51, n.7, jul. 2016; 818-823
Pesquisa Agropecuária Brasileira; v.51, n.7, jul. 2016; 818-823
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
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