Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
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/442 |
Resumo: | The objective of this work was to evaluate the interaction effect of water stress and aluminum toxicity on the initial growth and free proline contents in two cultivars of pigeon pea, IAPAR 43-Aratãand IAC Fava Larga, cultivated in hydroponics. The seedlings were submitted to stresses in nutritive solution (pH 3.8), osmotic potentials 0, -0.004, -0.006, -0.008 and -0.010 MPa, with 0, 0.25, 0.50, 0.75and 1 mmol dm-3 Al3+. The experiment was carried out in a plant growth room, under a luminary unit of average irradiance 190 μmol m-2 s-1, 12-hour photoperiod and 25+1ºC temperature. A completely randomizedexperimental design was used in factorial arrangement 2x5x5 (two pigeon pea cultivars, fi ve osmotic potential and fi ve levels), with four replicates. Data were submitted to analyses of polynomial regression, cluster and main components. Water stress causes growth reduction of pigeon pea aerial part, whereas aluminum toxicitycauses radicular growth reduction. There was increase of free proline contents in the two cultivars under water stress, and only in IAC Fava Larga under aluminum toxicity. Multivariate analysis showed high correlation in growth and accumulation of proline for cultivar IAC Fava Larga, evidencing probable tolerance to associated stresses. |
id |
EMBRAPA-4_8d3fd86d221220c57c6f3fab8f70d0dc |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/442 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponicsInteração da deficiência hídrica e da toxicidade do alumínio em guandu cultivado em hidroponiaCajanus cajan; abiotic stress; forage crop; osmoprotector; prolineCajanus cajan; estresse abiótico; forrageira; osmoprotetor; prolinaThe objective of this work was to evaluate the interaction effect of water stress and aluminum toxicity on the initial growth and free proline contents in two cultivars of pigeon pea, IAPAR 43-Aratãand IAC Fava Larga, cultivated in hydroponics. The seedlings were submitted to stresses in nutritive solution (pH 3.8), osmotic potentials 0, -0.004, -0.006, -0.008 and -0.010 MPa, with 0, 0.25, 0.50, 0.75and 1 mmol dm-3 Al3+. The experiment was carried out in a plant growth room, under a luminary unit of average irradiance 190 μmol m-2 s-1, 12-hour photoperiod and 25+1ºC temperature. A completely randomizedexperimental design was used in factorial arrangement 2x5x5 (two pigeon pea cultivars, fi ve osmotic potential and fi ve levels), with four replicates. Data were submitted to analyses of polynomial regression, cluster and main components. Water stress causes growth reduction of pigeon pea aerial part, whereas aluminum toxicitycauses radicular growth reduction. There was increase of free proline contents in the two cultivars under water stress, and only in IAC Fava Larga under aluminum toxicity. Multivariate analysis showed high correlation in growth and accumulation of proline for cultivar IAC Fava Larga, evidencing probable tolerance to associated stresses.O objetivo deste trabalho foi avaliar o efeito da interação da defi ciência hídrica e da toxicidade do alumínio no crescimento inicial e teores de prolina livre em duas cultivares de guandu, IAPAR 43-Aratã eIAC Fava Larga, cultivadas em hidroponia. As plântulas foram submetidas aos estresses em solução nutritiva (pH 3,8), nos potenciais osmóticos de 0, -0,004, -0,006, -0,008 e -0,010 MPa, com 0, 0,25, 0,50, 0,75 e1 mmol dm-3 de Al3+. O experimento foi conduzido em sala de crescimento, sob luminária com irradiância média de 190 μmol m-2 s-1, fotoperíodo de 12 horas e temperatura de 25+1ºC. O delineamento experimental foi inteiramente casualizado, em arranjo fatorial 2x5x5 (duas cultivares de guandu, cinco potenciais osmóticose cinco níveis de alumínio), com quatro repetições. Os dados foram submetidos às análises de regressão polinomial, agrupamento e componentes principais. A defi ciência hídrica causa redução do crescimento da parte aérea do guandu, e a toxicidade do alumínio provoca diminuição do crescimento radicular. Houve aumento nosteores de prolina livre nas duas cultivares sob defi ciência hídrica, e apenas na IAC Fava Larga sob toxicidade de alumínio. Na análise multivariada, foi observada alta correlação no crescimento e no acúmulo de prolina na cultivar IAC Fava Larga, o que evidencia provável tolerância aos estresses associados.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCNPq (processo 140320/2005-9)Marin, AdãoSantos, Durvalina Maria Mathias dos2008-10-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/442Pesquisa Agropecuaria Brasileira; v.43, n.10, out. 2008; 1267-1275Pesquisa Agropecuária Brasileira; v.43, n.10, out. 2008; 1267-12751678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/442/5511https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/442/320info:eu-repo/semantics/openAccess2014-07-17T17:02:44Zoai:ojs.seer.sct.embrapa.br:article/442Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-07-17T17:02:44Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics Interação da deficiência hídrica e da toxicidade do alumínio em guandu cultivado em hidroponia |
title |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics |
spellingShingle |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics Marin, Adão Cajanus cajan; abiotic stress; forage crop; osmoprotector; proline Cajanus cajan; estresse abiótico; forrageira; osmoprotetor; prolina |
title_short |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics |
title_full |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics |
title_fullStr |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics |
title_full_unstemmed |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics |
title_sort |
Interaction of water stress and aluminum toxicity in pigeon pea cultivated in hydroponics |
author |
Marin, Adão |
author_facet |
Marin, Adão Santos, Durvalina Maria Mathias dos |
author_role |
author |
author2 |
Santos, Durvalina Maria Mathias dos |
author2_role |
author |
dc.contributor.none.fl_str_mv |
CNPq (processo 140320/2005-9) |
dc.contributor.author.fl_str_mv |
Marin, Adão Santos, Durvalina Maria Mathias dos |
dc.subject.por.fl_str_mv |
Cajanus cajan; abiotic stress; forage crop; osmoprotector; proline Cajanus cajan; estresse abiótico; forrageira; osmoprotetor; prolina |
topic |
Cajanus cajan; abiotic stress; forage crop; osmoprotector; proline Cajanus cajan; estresse abiótico; forrageira; osmoprotetor; prolina |
description |
The objective of this work was to evaluate the interaction effect of water stress and aluminum toxicity on the initial growth and free proline contents in two cultivars of pigeon pea, IAPAR 43-Aratãand IAC Fava Larga, cultivated in hydroponics. The seedlings were submitted to stresses in nutritive solution (pH 3.8), osmotic potentials 0, -0.004, -0.006, -0.008 and -0.010 MPa, with 0, 0.25, 0.50, 0.75and 1 mmol dm-3 Al3+. The experiment was carried out in a plant growth room, under a luminary unit of average irradiance 190 μmol m-2 s-1, 12-hour photoperiod and 25+1ºC temperature. A completely randomizedexperimental design was used in factorial arrangement 2x5x5 (two pigeon pea cultivars, fi ve osmotic potential and fi ve levels), with four replicates. Data were submitted to analyses of polynomial regression, cluster and main components. Water stress causes growth reduction of pigeon pea aerial part, whereas aluminum toxicitycauses radicular growth reduction. There was increase of free proline contents in the two cultivars under water stress, and only in IAC Fava Larga under aluminum toxicity. Multivariate analysis showed high correlation in growth and accumulation of proline for cultivar IAC Fava Larga, evidencing probable tolerance to associated stresses. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-10-29 |
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/442 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/442 |
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/442/5511 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/442/320 |
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.43, n.10, out. 2008; 1267-1275 Pesquisa Agropecuária Brasileira; v.43, n.10, out. 2008; 1267-1275 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 |
_version_ |
1793416651255840768 |