Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions
Autor(a) principal: | |
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Data de Publicação: | 2001 |
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/6117 |
Resumo: | A greenhouse experiment was conducted with the objective of studying the response of guava plants (Psidium guajava L.) to increasing levels of NaCl concentrations. Plants were grown in nutrient solutions, with 0, 25, 50, 75, 100, 125 and 150 mM of NaCl, and harvested 30 and 50 days after saline stress in a complete randomized design. The following traits were studied: shoot, root and total plant dry matter and the percentage of Na, Cl, K, Ca and Mg in plant dry matter. Dry matter yield decreased when salinity increased. The root/shoot ratio decreased with the saline treatment. Salinity stress caused an increase in the levels of Na+ and Cl-. The highest ion accumulation was found in the leaves followed by the roots. The Ca levels were stable in the roots, but decreased in stems and leaves. The K content was reduced with the increased levels of salinity, particularly in the leaves. On the other hand, Mg levels were not affected by salinity in stems and roots but decreased in the leaves. There was a positive relationship between Na and Cl and a negative relationship between Na and K concentration in roots and leaves. Mg concentration in leaves and roots did not vary with the concentration of Na. The concentration of Ca did not vary with Na in the leaves but showed an inverse relationship in the roots. |
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Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditionsDistribuição da matéria seca e composição química das raízes, caule e folhas de goiabeira submetida a estresse salinoPsidium guajava; sodium chloride; salt solutions; plant responsePsidium guajava; cloreto de sódio; solução salina; resposta da plantaA greenhouse experiment was conducted with the objective of studying the response of guava plants (Psidium guajava L.) to increasing levels of NaCl concentrations. Plants were grown in nutrient solutions, with 0, 25, 50, 75, 100, 125 and 150 mM of NaCl, and harvested 30 and 50 days after saline stress in a complete randomized design. The following traits were studied: shoot, root and total plant dry matter and the percentage of Na, Cl, K, Ca and Mg in plant dry matter. Dry matter yield decreased when salinity increased. The root/shoot ratio decreased with the saline treatment. Salinity stress caused an increase in the levels of Na+ and Cl-. The highest ion accumulation was found in the leaves followed by the roots. The Ca levels were stable in the roots, but decreased in stems and leaves. The K content was reduced with the increased levels of salinity, particularly in the leaves. On the other hand, Mg levels were not affected by salinity in stems and roots but decreased in the leaves. There was a positive relationship between Na and Cl and a negative relationship between Na and K concentration in roots and leaves. Mg concentration in leaves and roots did not vary with the concentration of Na. The concentration of Ca did not vary with Na in the leaves but showed an inverse relationship in the roots.Um experimento em casa de vegetação foi conduzido com o objetivo de estudar a resposta de plantas de goiabeira (Psidium guajava L.) a diferentes concentrações de NaCl. As plantas foram cultivadas em solução nutritiva, com 0, 25, 50, 75, 100, 125 e 150 mM de NaCl, e colhidas com 30 e 50 dias após estresse, num delineamento inteiramente casualizado. Foram determinadas: matéria seca das raízes e parte aérea; e porcentagens de Na, Cl, K, Ca e Mg nas raízes, caule e folhas. O estresse salino reduziu a matéria seca total, e a relação parte aérea/raiz foi reduzida. O estresse causou um aumento nos níveis dos íons Na+ e Cl-, com maior acúmulo nas folhas, seguido das raízes. Os teores de Ca foram estáveis nas raízes, mas decresceram no caule e folhas. Os teores de K foram reduzidos, particularmente nas folhas. Ao contrário, os teores de Mg não foram afetados pela salinidade no caule e nas raízes, havendo, entretanto, redução nas folhas. O teor de Na apresentou relação direta com o de Cl e inversa com o de K nas raízes e folhas. O teor de Ca não variou com o de Na nas folhas, mas apresentou uma relação inversa nas raízes. O teor de Mg não variou com o de Na nas raízes e folhas.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFerreira, Raimundo GonçalvesTávora, Francisco José Alves FernandesHernandez, Fernando Felipe Ferreyra2001-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6117Pesquisa Agropecuaria Brasileira; v.36, n.1, jan. 2001; 79-88Pesquisa Agropecuária Brasileira; v.36, n.1, jan. 2001; 79-881678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6117/3184info:eu-repo/semantics/openAccess2014-09-16T17:58:08Zoai:ojs.seer.sct.embrapa.br:article/6117Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-09-16T17:58:08Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions Distribuição da matéria seca e composição química das raízes, caule e folhas de goiabeira submetida a estresse salino |
title |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions |
spellingShingle |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions Ferreira, Raimundo Gonçalves Psidium guajava; sodium chloride; salt solutions; plant response Psidium guajava; cloreto de sódio; solução salina; resposta da planta |
title_short |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions |
title_full |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions |
title_fullStr |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions |
title_full_unstemmed |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions |
title_sort |
Dry matter partitioning and mineral composition of roots, stems and leaves of guava grown under salt stress conditions |
author |
Ferreira, Raimundo Gonçalves |
author_facet |
Ferreira, Raimundo Gonçalves Távora, Francisco José Alves Fernandes Hernandez, Fernando Felipe Ferreyra |
author_role |
author |
author2 |
Távora, Francisco José Alves Fernandes Hernandez, Fernando Felipe Ferreyra |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Ferreira, Raimundo Gonçalves Távora, Francisco José Alves Fernandes Hernandez, Fernando Felipe Ferreyra |
dc.subject.por.fl_str_mv |
Psidium guajava; sodium chloride; salt solutions; plant response Psidium guajava; cloreto de sódio; solução salina; resposta da planta |
topic |
Psidium guajava; sodium chloride; salt solutions; plant response Psidium guajava; cloreto de sódio; solução salina; resposta da planta |
description |
A greenhouse experiment was conducted with the objective of studying the response of guava plants (Psidium guajava L.) to increasing levels of NaCl concentrations. Plants were grown in nutrient solutions, with 0, 25, 50, 75, 100, 125 and 150 mM of NaCl, and harvested 30 and 50 days after saline stress in a complete randomized design. The following traits were studied: shoot, root and total plant dry matter and the percentage of Na, Cl, K, Ca and Mg in plant dry matter. Dry matter yield decreased when salinity increased. The root/shoot ratio decreased with the saline treatment. Salinity stress caused an increase in the levels of Na+ and Cl-. The highest ion accumulation was found in the leaves followed by the roots. The Ca levels were stable in the roots, but decreased in stems and leaves. The K content was reduced with the increased levels of salinity, particularly in the leaves. On the other hand, Mg levels were not affected by salinity in stems and roots but decreased in the leaves. There was a positive relationship between Na and Cl and a negative relationship between Na and K concentration in roots and leaves. Mg concentration in leaves and roots did not vary with the concentration of Na. The concentration of Ca did not vary with Na in the leaves but showed an inverse relationship in the roots. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-01-01 |
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/6117 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6117 |
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/6117/3184 |
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.36, n.1, jan. 2001; 79-88 Pesquisa Agropecuária Brasileira; v.36, n.1, jan. 2001; 79-88 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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1793416670900912128 |