Effects of soil water depletion on the water relations in tropical kudzu
Autor(a) principal: | |
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Data de Publicação: | 1999 |
Outros Autores: | , |
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/5318 |
Resumo: | Tropical kudzu (Pueraria phaseoloides (Roxb.) Benth., Leguminosae: Faboideae) is native to the humid Southeastern Asia. Tropical kudzu has potential as a cover crop in regions subjected to dryness. The objective of this paper was to evaluate the effect of soil water depletion on leaflet relative water content (RWC), stomatal conductance (g) and temperature (TL) in tropical kudzu. RWC of water-stressed plants dropped from 96 to 78%, following a reduction in SWC from 0.25 to 0.17 g (H2O).g (dry soil)-1. Stomatal conductance of stressed plants decreased from 221 to 98 mmol.m-2.s-1, following the reduction in soil water content (SWC). The day after re-irrigation, g of water stressed plants was 15% lower than g of unstressed plants. Differences in TL between water-stressed and unstressed plants (DTL) rose linearly from 0.1 to 2.2oC following progressive water deficit. RWC and TL of water-stressed plants paralled RWC and TL of unstressed plants the day after re-irrigation. The strong decrease in SWC found in this study only induced moderate water stress in tropical kudzu. In addition, tropical kudzu recover rapidly from the induced water stress after the re-irrigation. |
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Effects of soil water depletion on the water relations in tropical kudzuEfeito da deficiência hídrica no solo sobre as relações hídricas em pueráriacover crop; ecophysiology; forage; Leguminosae; Pueraria phaseoloides; water deficitcultura de cobertura; ecofisiologia; forragem; Leguminosae; Pueraria phaseoloides; déficit hídricoTropical kudzu (Pueraria phaseoloides (Roxb.) Benth., Leguminosae: Faboideae) is native to the humid Southeastern Asia. Tropical kudzu has potential as a cover crop in regions subjected to dryness. The objective of this paper was to evaluate the effect of soil water depletion on leaflet relative water content (RWC), stomatal conductance (g) and temperature (TL) in tropical kudzu. RWC of water-stressed plants dropped from 96 to 78%, following a reduction in SWC from 0.25 to 0.17 g (H2O).g (dry soil)-1. Stomatal conductance of stressed plants decreased from 221 to 98 mmol.m-2.s-1, following the reduction in soil water content (SWC). The day after re-irrigation, g of water stressed plants was 15% lower than g of unstressed plants. Differences in TL between water-stressed and unstressed plants (DTL) rose linearly from 0.1 to 2.2oC following progressive water deficit. RWC and TL of water-stressed plants paralled RWC and TL of unstressed plants the day after re-irrigation. The strong decrease in SWC found in this study only induced moderate water stress in tropical kudzu. In addition, tropical kudzu recover rapidly from the induced water stress after the re-irrigation.O kudzu (Pueraria phaseoloides (Roxb.) Benth., Leguminosae: Faboideae) é uma espécie nativa do úmido sudeste asiático, com potencial para emprego como cobertura em regiões sujeitas à seca sazonal. Este trabalho objetiva avaliar os efeitos da redução no conteúdo de água do solo (SWC) sobre o conteúdo relativo de água (RWC), condutância estomática (g) e temperatura de folíolos (TL) de plantas de puerária. Redução no RWC, de 96 para 78%, e redução na g, de 221 para 98 mmol.m-2.s-1, se mostraram associadas à diminuição no conteúdo de água do solo (SWC), de 0,25 para 0,17 g (H2O).g (solo seco)-1. No dia seguinte à re-irrigação, a g de plantas estressadas era 15% inferior à g de plantas não submetidas ao estresse hídrico. A diferença em TL entre plantas estressadas e não-estressadas (DTL) aumentou linearmente de 0,1 para 2,2oC com a progressão do déficit hídrico. RWC e TL de plantas estressadas e não-estressadas se igualaram no dia seguinte à re-irrigação. O forte decréscimo em SWC encontrado neste estudo induziu somente um déficit hídrico moderado em kudzu tropical. O déficit hídrico induzido em kudzu tropical pode ser rapidamente superado após a re-irrigação.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraNetto, Adaucto Bellarmino de PereiraMagalhães, Antonio Celso Novaes dePinto, Hilton Silveira1999-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5318Pesquisa Agropecuaria Brasileira; v.34, n.7, jul. 1999; 1151-1157Pesquisa Agropecuária Brasileira; v.34, n.7, jul. 1999; 1151-11571678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5318/2510info:eu-repo/semantics/openAccess2012-02-16T11:45:43Zoai:ojs.seer.sct.embrapa.br:article/5318Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2012-02-16T11:45:43Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Effects of soil water depletion on the water relations in tropical kudzu Efeito da deficiência hídrica no solo sobre as relações hídricas em puerária |
title |
Effects of soil water depletion on the water relations in tropical kudzu |
spellingShingle |
Effects of soil water depletion on the water relations in tropical kudzu Netto, Adaucto Bellarmino de Pereira cover crop; ecophysiology; forage; Leguminosae; Pueraria phaseoloides; water deficit cultura de cobertura; ecofisiologia; forragem; Leguminosae; Pueraria phaseoloides; déficit hídrico |
title_short |
Effects of soil water depletion on the water relations in tropical kudzu |
title_full |
Effects of soil water depletion on the water relations in tropical kudzu |
title_fullStr |
Effects of soil water depletion on the water relations in tropical kudzu |
title_full_unstemmed |
Effects of soil water depletion on the water relations in tropical kudzu |
title_sort |
Effects of soil water depletion on the water relations in tropical kudzu |
author |
Netto, Adaucto Bellarmino de Pereira |
author_facet |
Netto, Adaucto Bellarmino de Pereira Magalhães, Antonio Celso Novaes de Pinto, Hilton Silveira |
author_role |
author |
author2 |
Magalhães, Antonio Celso Novaes de Pinto, Hilton Silveira |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Netto, Adaucto Bellarmino de Pereira Magalhães, Antonio Celso Novaes de Pinto, Hilton Silveira |
dc.subject.por.fl_str_mv |
cover crop; ecophysiology; forage; Leguminosae; Pueraria phaseoloides; water deficit cultura de cobertura; ecofisiologia; forragem; Leguminosae; Pueraria phaseoloides; déficit hídrico |
topic |
cover crop; ecophysiology; forage; Leguminosae; Pueraria phaseoloides; water deficit cultura de cobertura; ecofisiologia; forragem; Leguminosae; Pueraria phaseoloides; déficit hídrico |
description |
Tropical kudzu (Pueraria phaseoloides (Roxb.) Benth., Leguminosae: Faboideae) is native to the humid Southeastern Asia. Tropical kudzu has potential as a cover crop in regions subjected to dryness. The objective of this paper was to evaluate the effect of soil water depletion on leaflet relative water content (RWC), stomatal conductance (g) and temperature (TL) in tropical kudzu. RWC of water-stressed plants dropped from 96 to 78%, following a reduction in SWC from 0.25 to 0.17 g (H2O).g (dry soil)-1. Stomatal conductance of stressed plants decreased from 221 to 98 mmol.m-2.s-1, following the reduction in soil water content (SWC). The day after re-irrigation, g of water stressed plants was 15% lower than g of unstressed plants. Differences in TL between water-stressed and unstressed plants (DTL) rose linearly from 0.1 to 2.2oC following progressive water deficit. RWC and TL of water-stressed plants paralled RWC and TL of unstressed plants the day after re-irrigation. The strong decrease in SWC found in this study only induced moderate water stress in tropical kudzu. In addition, tropical kudzu recover rapidly from the induced water stress after the re-irrigation. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-07-01 |
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/5318 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5318 |
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/5318/2510 |
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.34, n.7, jul. 1999; 1151-1157 Pesquisa Agropecuária Brasileira; v.34, n.7, jul. 1999; 1151-1157 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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1793416706191785984 |