Growth and maintenance respiration in whole plants, shoots and roots of maize and rice

Detalhes bibliográficos
Autor(a) principal: Machado, Eduardo Caruso
Data de Publicação: 2014
Outros Autores: Pereira, Antonio Roberto
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/13524
Resumo: Maintenance respiration coefficient (M) and conversion efficiency (Y) of either the whole plant or its organs, roots and tops, were determined for two maize (HS1227 and HS7777) and two rice cultivarsa (IAC-165 and IAC-899), through the carbon balance technique of seedlings grown in nutrient solution in controlled growth chamber. Values of Y, either for the whole plant or the tops, indicated that the photosynthetic pathway (C3 or C4) did not interfer with the conversion process. Regardless of cultivar Y was greater for the tops while M was greater for the roots. Therefore, such coefficients should be considered for each organ of the plant because an overall coefficient for whole plant obscures the physiological differences of each organ.
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spelling Growth and maintenance respiration in whole plants, shoots and roots of maize and riceRespiração de crescimento e de manutenção da planta inteira, das raízes e da parte aérea em milho e arroz.carbon balance; plant growth model photosynthesis; ionic absorptionbalanço de carbono; modelo de crescimento; fotossíntese; absorção iônica.Maintenance respiration coefficient (M) and conversion efficiency (Y) of either the whole plant or its organs, roots and tops, were determined for two maize (HS1227 and HS7777) and two rice cultivarsa (IAC-165 and IAC-899), through the carbon balance technique of seedlings grown in nutrient solution in controlled growth chamber. Values of Y, either for the whole plant or the tops, indicated that the photosynthetic pathway (C3 or C4) did not interfer with the conversion process. Regardless of cultivar Y was greater for the tops while M was greater for the roots. Therefore, such coefficients should be considered for each organ of the plant because an overall coefficient for whole plant obscures the physiological differences of each organ.Estimou-se o coeficiente de manutenção (M) e a eficiência de conversão (Y) da planta inteira e de seus orgãos, raízes e parte aérea, separadamente, em dois híbridos simples de milho (HS1227 e HS7777) e em duas cultivares de arroz (IAC-165 e IAC-899), através do balanço de carbono em plantas intactas crescidas em solução nutritiva e em ambiente controlado. Os valores encontrados de Y para planta inteira e para parte aérea indicaram que o metabolismo fotossintético (C4 ou C3) não interferiu com o processo de conversão de fotossintetizados em fitomassa. Independentemente da espécie ou cultivar, Y foi maior para a parte aérea, enquanto que M foi maior para as raízes. Portanto, tais índices devem ser considerados separadamente para cada órgão, visto que um coeficiente global para a planta inteira mascara diferenças fisiológicas das raízes e da parte aérea.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraMachado, Eduardo CarusoPereira, Antonio Roberto2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13524Pesquisa Agropecuaria Brasileira; v.25, n.6, jun. 1990; 925-933Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 925-9331678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13524/7682info:eu-repo/semantics/openAccess2014-04-17T14:34:40Zoai:ojs.seer.sct.embrapa.br:article/13524Revistahttp://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 Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
Respiração de crescimento e de manutenção da planta inteira, das raízes e da parte aérea em milho e arroz.
title Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
spellingShingle Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
Machado, Eduardo Caruso
carbon balance; plant growth model photosynthesis; ionic absorption
balanço de carbono; modelo de crescimento; fotossíntese; absorção iônica.
title_short Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
title_full Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
title_fullStr Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
title_full_unstemmed Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
title_sort Growth and maintenance respiration in whole plants, shoots and roots of maize and rice
author Machado, Eduardo Caruso
author_facet Machado, Eduardo Caruso
Pereira, Antonio Roberto
author_role author
author2 Pereira, Antonio Roberto
author2_role author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Machado, Eduardo Caruso
Pereira, Antonio Roberto
dc.subject.por.fl_str_mv carbon balance; plant growth model photosynthesis; ionic absorption
balanço de carbono; modelo de crescimento; fotossíntese; absorção iônica.
topic carbon balance; plant growth model photosynthesis; ionic absorption
balanço de carbono; modelo de crescimento; fotossíntese; absorção iônica.
description Maintenance respiration coefficient (M) and conversion efficiency (Y) of either the whole plant or its organs, roots and tops, were determined for two maize (HS1227 and HS7777) and two rice cultivarsa (IAC-165 and IAC-899), through the carbon balance technique of seedlings grown in nutrient solution in controlled growth chamber. Values of Y, either for the whole plant or the tops, indicated that the photosynthetic pathway (C3 or C4) did not interfer with the conversion process. Regardless of cultivar Y was greater for the tops while M was greater for the roots. Therefore, such coefficients should be considered for each organ of the plant because an overall coefficient for whole plant obscures the physiological differences of each organ.
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/13524
url https://seer.sct.embrapa.br/index.php/pab/article/view/13524
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/13524/7682
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; 925-933
Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 925-933
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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