Internal water-relations in soybean under water deficit in field conditions

Detalhes bibliográficos
Autor(a) principal: Burle, Marília Lobo
Data de Publicação: 2014
Outros Autores: Rodrigues, Gustavo Costa
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/13522
Resumo: Soybean plants (Glycine max) cv. Doko were subjected to different soil drying cycles and rewetting. Using the pressure-volume curve method, the osmotic potential at full turgor (4,7 l 00) and water potential at zero turgor (4,0) were measured. The leaf concentration of proline was also analysed. In one of the treatments (19 days without irrigation, wich corresponds to 102 days after emergence) there was a decrease in 4,ir10° and 4,0, indicating the occurrence of osmotic adjustment. The proline accumulation does not seem to participate in this mechanism. In two of the treatments a decrease of it's concentration in response to water deficit was found. On the other hand, variations among tjnr"°, 4,0 and proline concentration between the treatments that were not subjected to a soil drying cycle at different sampling dates were observed
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spelling Internal water-relations in soybean under water deficit in field conditionsRelações hídricas Internas da soja sob déficit hídrico em condições de campoGlycine max rehydratation; osmotic potential; turgescenceGlycine max; reidratação; potencial osmótico; turgescênciaSoybean plants (Glycine max) cv. Doko were subjected to different soil drying cycles and rewetting. Using the pressure-volume curve method, the osmotic potential at full turgor (4,7 l 00) and water potential at zero turgor (4,0) were measured. The leaf concentration of proline was also analysed. In one of the treatments (19 days without irrigation, wich corresponds to 102 days after emergence) there was a decrease in 4,ir10° and 4,0, indicating the occurrence of osmotic adjustment. The proline accumulation does not seem to participate in this mechanism. In two of the treatments a decrease of it's concentration in response to water deficit was found. On the other hand, variations among tjnr"°, 4,0 and proline concentration between the treatments that were not subjected to a soil drying cycle at different sampling dates were observedPlantas de soja (Glycine max) cv. Doko foram submetidas a diferentes períodos de déficit hídrico e de reidratação. Utilizando-se a metodologia da curva pressão-volume obtiveram- se parâmetros comumente utilizados nos estudos das relações hídricas [potencial osmótico no máximo de turgescência (4nT 100) e potencial hídrico no zero de turgescência (kIJb) e potencial hídrico no zero de turgescência (uº)]. Foi também analisada a concentração de prolina foliar. Em um dos tratamentos (após 19 dias de suspensão da irrigação, correspondente a 102 dias após emergência) observou-se redução (valores mais negativos) do Un¹ºº e Uº, indicando a existência do mecanismo de ajustamento osmótico. O acúmulo de prolina parece não estar envolvido nesse mecanismo. Em dois dos tratamentos houve redução da concentração de prolina, em função do déficit hídrico. Observaram- se também variações nos parâmetros das relações hídricas e concentração de prolina entre os tratamentos que não sofreram indução de déficit hídrico, nas diferentes épocas de amostragem.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraBurle, Marília LoboRodrigues, Gustavo Costa2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13522Pesquisa Agropecuaria Brasileira; v.25, n.6, jun. 1990; 905-913Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 905-9131678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13522/7680info:eu-repo/semantics/openAccess2014-04-17T14:34:40Zoai:ojs.seer.sct.embrapa.br:article/13522Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T14:34:40Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Internal water-relations in soybean under water deficit in field conditions
Relações hídricas Internas da soja sob déficit hídrico em condições de campo
title Internal water-relations in soybean under water deficit in field conditions
spellingShingle Internal water-relations in soybean under water deficit in field conditions
Burle, Marília Lobo
Glycine max rehydratation; osmotic potential; turgescence
Glycine max; reidratação; potencial osmótico; turgescência
title_short Internal water-relations in soybean under water deficit in field conditions
title_full Internal water-relations in soybean under water deficit in field conditions
title_fullStr Internal water-relations in soybean under water deficit in field conditions
title_full_unstemmed Internal water-relations in soybean under water deficit in field conditions
title_sort Internal water-relations in soybean under water deficit in field conditions
author Burle, Marília Lobo
author_facet Burle, Marília Lobo
Rodrigues, Gustavo Costa
author_role author
author2 Rodrigues, Gustavo Costa
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Burle, Marília Lobo
Rodrigues, Gustavo Costa
dc.subject.por.fl_str_mv Glycine max rehydratation; osmotic potential; turgescence
Glycine max; reidratação; potencial osmótico; turgescência
topic Glycine max rehydratation; osmotic potential; turgescence
Glycine max; reidratação; potencial osmótico; turgescência
description Soybean plants (Glycine max) cv. Doko were subjected to different soil drying cycles and rewetting. Using the pressure-volume curve method, the osmotic potential at full turgor (4,7 l 00) and water potential at zero turgor (4,0) were measured. The leaf concentration of proline was also analysed. In one of the treatments (19 days without irrigation, wich corresponds to 102 days after emergence) there was a decrease in 4,ir10° and 4,0, indicating the occurrence of osmotic adjustment. The proline accumulation does not seem to participate in this mechanism. In two of the treatments a decrease of it's concentration in response to water deficit was found. On the other hand, variations among tjnr"°, 4,0 and proline concentration between the treatments that were not subjected to a soil drying cycle at different sampling dates were observed
publishDate 2014
dc.date.none.fl_str_mv 2014-04-17
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/13522
url https://seer.sct.embrapa.br/index.php/pab/article/view/13522
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/13522/7680
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.25, n.6, jun. 1990; 905-913
Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 905-913
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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