A system for measuring the CO2 fluxes in roots and top of intact plants

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/13525
Resumo: An open system for measuring continuously fluxes of CO2 under controlled conditions in whole plants and in their organs, top and roots was developed. Tests carried out with two hybrids of maize (Zea mays (L.)), HS7777 (dent) and HS1227 (flint), showed that this system is suitable for measuring the daily carbon balance. In HS7777, 51% of the gross photosynthesis was incorporated as phytomass in the top, and 16% in the roots; the remaining 33% was consumed by respiration, being 21% in the top and 12% in the roots. In HS1227 53% was incorporated in the top and 10% in the roots phytomass; respiration of the top used 23% and the roots 14%. Specific respiration rate was higher for roots than for top. Photosynthesis, respiration and growth were quantitatively related
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spelling A system for measuring the CO2 fluxes in roots and top of intact plantsUm sistema para medidas de fluxos de CO2 em raízes e parto aérea de plantas intactasgas exchange chamber; photosynthesis; respiration; growth; maizecâmara de trocas gasosas; fotossíntese; respiração; crescimento; milho.An open system for measuring continuously fluxes of CO2 under controlled conditions in whole plants and in their organs, top and roots was developed. Tests carried out with two hybrids of maize (Zea mays (L.)), HS7777 (dent) and HS1227 (flint), showed that this system is suitable for measuring the daily carbon balance. In HS7777, 51% of the gross photosynthesis was incorporated as phytomass in the top, and 16% in the roots; the remaining 33% was consumed by respiration, being 21% in the top and 12% in the roots. In HS1227 53% was incorporated in the top and 10% in the roots phytomass; respiration of the top used 23% and the roots 14%. Specific respiration rate was higher for roots than for top. Photosynthesis, respiration and growth were quantitatively relatedDesenvolveu-se um sistema aberto para medidas contínuas dos fluxos de CO2 sob condições controladas, tanto em plantas intactas como em seus órgãos separadamente, parte aérea e raízes. Testes efetuados com dois híbridos de milho (Zea mays (L.)), HS7777 (tipo dentado) e HS1227 (tipo duro) mostraram que tal sistema é adequado para medidas do balanço diário de carbono. No HS7777, 51% da produção fotossintética bruta foi incorporada à fitomassa da parte aérea, e 16% nas raízes; os 33% restantes foram consumidos pela respiração, sendo 21% pela parte aérea e 12% pelas raízes. No outro híbrido (HS1227), 53% foram incorporados à fitomassa da parte aérea e 10% nas raízes; a respiração da parte aérea consumiu 23%, e a das raízes, 14%. A taxa de respiração específica das raízes foi maior que a da parte aérea. Fotossíntese, respiração e crescimento foram quantitativamente interrelacionados.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/13525Pesquisa Agropecuaria Brasileira; v.25, n.6, jun. 1990; 935-944Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 935-9441678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13525/7683info:eu-repo/semantics/openAccess2014-04-17T14:34:40Zoai:ojs.seer.sct.embrapa.br:article/13525Revistahttp://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 A system for measuring the CO2 fluxes in roots and top of intact plants
Um sistema para medidas de fluxos de CO2 em raízes e parto aérea de plantas intactas
title A system for measuring the CO2 fluxes in roots and top of intact plants
spellingShingle A system for measuring the CO2 fluxes in roots and top of intact plants
Machado, Eduardo Caruso
gas exchange chamber; photosynthesis; respiration; growth; maize
câmara de trocas gasosas; fotossíntese; respiração; crescimento; milho.
title_short A system for measuring the CO2 fluxes in roots and top of intact plants
title_full A system for measuring the CO2 fluxes in roots and top of intact plants
title_fullStr A system for measuring the CO2 fluxes in roots and top of intact plants
title_full_unstemmed A system for measuring the CO2 fluxes in roots and top of intact plants
title_sort A system for measuring the CO2 fluxes in roots and top of intact plants
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 gas exchange chamber; photosynthesis; respiration; growth; maize
câmara de trocas gasosas; fotossíntese; respiração; crescimento; milho.
topic gas exchange chamber; photosynthesis; respiration; growth; maize
câmara de trocas gasosas; fotossíntese; respiração; crescimento; milho.
description An open system for measuring continuously fluxes of CO2 under controlled conditions in whole plants and in their organs, top and roots was developed. Tests carried out with two hybrids of maize (Zea mays (L.)), HS7777 (dent) and HS1227 (flint), showed that this system is suitable for measuring the daily carbon balance. In HS7777, 51% of the gross photosynthesis was incorporated as phytomass in the top, and 16% in the roots; the remaining 33% was consumed by respiration, being 21% in the top and 12% in the roots. In HS1227 53% was incorporated in the top and 10% in the roots phytomass; respiration of the top used 23% and the roots 14%. Specific respiration rate was higher for roots than for top. Photosynthesis, respiration and growth were quantitatively related
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/13525
url https://seer.sct.embrapa.br/index.php/pab/article/view/13525
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/13525/7683
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; 935-944
Pesquisa Agropecuária Brasileira; v.25, n.6, jun. 1990; 935-944
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_ 1793416666519961600

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