Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914 |
Resumo: | In order to evaluate changes in leaf water potential (?w) and solute accumulation induced by intermittent drought, a research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ?w was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ?w hour was between 800 h and 1200 h. GBU 50 reduced significantly ?w in stressed plants at 800 h, while control lants reduced at 1200 h . GBU 68 presented the higher ?w. The extending of the stress induced reductions to carbohydrates in the leaves of all genotypes, increases in amino acids to GBU 44 and 48, and reductions of 40% and 43% to GBU 50 and 68, respectively; results also showed alterations in proline content. In the roots, increases in carbohydrates were observed only in GBU 48. Alterations in amino acids, protein, and proline were verified. Umbu trees presented isohydric behavior maintaining high eaf water potential and a great variability in organic solutes accumulation in response to drought with marked differences among the genotypes. |
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Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought.UmbuzeiroBioma CaatingaUmbuSpondias TuberosaCarboidratoPotencial HídricoProlinaGenótipoCarbohydratesProlineSpondiasWater potentialIn order to evaluate changes in leaf water potential (?w) and solute accumulation induced by intermittent drought, a research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ?w was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ?w hour was between 800 h and 1200 h. GBU 50 reduced significantly ?w in stressed plants at 800 h, while control lants reduced at 1200 h . GBU 68 presented the higher ?w. The extending of the stress induced reductions to carbohydrates in the leaves of all genotypes, increases in amino acids to GBU 44 and 48, and reductions of 40% and 43% to GBU 50 and 68, respectively; results also showed alterations in proline content. In the roots, increases in carbohydrates were observed only in GBU 48. Alterations in amino acids, protein, and proline were verified. Umbu trees presented isohydric behavior maintaining high eaf water potential and a great variability in organic solutes accumulation in response to drought with marked differences among the genotypes.ELIZAMAR C. SILVA; REJANE J. M. C. NOGUEIRA; FERNANDO H. A. VALE; NATONIEL FRANKLIN DE MELO, CPATSA; FRANCISCO PINHEIRO DE ARAUJO, CPATSA.SILVA, E. C.NOGUEIRA, R. J. M. C.VALE, F. H. A.MELO, N. F. deARAUJO, F. P. de2011-04-09T20:58:03Z2011-04-09T20:58:03Z2009-12-1420092011-04-10T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleBrazilian Journal of Plant Physiology, v. 21, n. 1, p. 43-53, 2009.http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2011-04-11T14:51:10Zoai:www.alice.cnptia.embrapa.br:doc/577914Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542011-04-11T14:51:10falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542011-04-11T14:51:10Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. |
title |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. |
spellingShingle |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. SILVA, E. C. Umbuzeiro Bioma Caatinga Umbu Spondias Tuberosa Carboidrato Potencial Hídrico Prolina Genótipo Carbohydrates Proline Spondias Water potential |
title_short |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. |
title_full |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. |
title_fullStr |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. |
title_full_unstemmed |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. |
title_sort |
Water relations and organic solutes productions in four umbu tree (Spondias tuberosa) genotypes under intermittent drought. |
author |
SILVA, E. C. |
author_facet |
SILVA, E. C. NOGUEIRA, R. J. M. C. VALE, F. H. A. MELO, N. F. de ARAUJO, F. P. de |
author_role |
author |
author2 |
NOGUEIRA, R. J. M. C. VALE, F. H. A. MELO, N. F. de ARAUJO, F. P. de |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
ELIZAMAR C. SILVA; REJANE J. M. C. NOGUEIRA; FERNANDO H. A. VALE; NATONIEL FRANKLIN DE MELO, CPATSA; FRANCISCO PINHEIRO DE ARAUJO, CPATSA. |
dc.contributor.author.fl_str_mv |
SILVA, E. C. NOGUEIRA, R. J. M. C. VALE, F. H. A. MELO, N. F. de ARAUJO, F. P. de |
dc.subject.por.fl_str_mv |
Umbuzeiro Bioma Caatinga Umbu Spondias Tuberosa Carboidrato Potencial Hídrico Prolina Genótipo Carbohydrates Proline Spondias Water potential |
topic |
Umbuzeiro Bioma Caatinga Umbu Spondias Tuberosa Carboidrato Potencial Hídrico Prolina Genótipo Carbohydrates Proline Spondias Water potential |
description |
In order to evaluate changes in leaf water potential (?w) and solute accumulation induced by intermittent drought, a research was performed under greenhouse conditions using four umbu tree genotypes (GBU 44, GBU 48, GBU 50 and GBU 68) and two water treatments (control and stressed by withholding water), with four replicates. The ?w was measured in four-hour intervals during a 24-hour period at the first stomatal closure and at the end of the experimental period. Carbohydrates, amino acids, protein and proline contents were also evaluated in leaves and roots. Significant differences were found in most of the studied parameters. The lower ?w hour was between 800 h and 1200 h. GBU 50 reduced significantly ?w in stressed plants at 800 h, while control lants reduced at 1200 h . GBU 68 presented the higher ?w. The extending of the stress induced reductions to carbohydrates in the leaves of all genotypes, increases in amino acids to GBU 44 and 48, and reductions of 40% and 43% to GBU 50 and 68, respectively; results also showed alterations in proline content. In the roots, increases in carbohydrates were observed only in GBU 48. Alterations in amino acids, protein, and proline were verified. Umbu trees presented isohydric behavior maintaining high eaf water potential and a great variability in organic solutes accumulation in response to drought with marked differences among the genotypes. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-12-14 2009 2011-04-09T20:58:03Z 2011-04-09T20:58:03Z 2011-04-10T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Brazilian Journal of Plant Physiology, v. 21, n. 1, p. 43-53, 2009. http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914 |
identifier_str_mv |
Brazilian Journal of Plant Physiology, v. 21, n. 1, p. 43-53, 2009. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/577914 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503336537358336 |