Development of experimental structure and influence of high CO2 concentration in maize cro

Detalhes bibliográficos
Autor(a) principal: Ferreira, Paulo A.
Data de Publicação: 2012
Outros Autores: Silva, João B. Lopes da, Pereira, Eduardo G., Costa, Luís C., Miranda, Glauco V.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: LOCUS Repositório Institucional da UFV
Texto Completo: http://dx.doi.org/10.1590/S0100-69162012000200010
http://www.locus.ufv.br/handle/123456789/25122
Resumo: Maize is a C4 plant that shows few or no response to high [CO2]. Thus, this study aimed to analyze the photosynthetic rate and yield of maize under high [CO2] and develop open-top chambers (OTC) to create an atmosphere enriched with CO2. The experiment was conducted between October 2008 and March 2009. The OTCs were developed in modular scheme. Measurement of photosynthetic rates, transpiration, stomata conductance, grain yield and dry matter were performed. The experimental design was randomized blocks with four replications and three treatments: P1 - plants grown in OTC with 700 ppm [CO2], P2 - plants grown in OTC with environmental [CO2], and P3 - control, cultivated in open field. The results were analyzed by ANOVA and Tukey's test (Pr< 0.05). The chambers can reduce by 25% the photosynthetically active radiation and increase the air and leaf temperatures. Plants under high [CO2] (P1) showed the highest photosynthetic rates and the lowest stomata conductance and transpiration. The total weight of grains (g) and dry mass of shoots (g) showed no increases for P1, despite their higher photosynthetic rates.
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spelling Development of experimental structure and influence of high CO2 concentration in maize croOpen-top chambersClimate changeZea mays L.Câmaras de topo abertoMudanças climáticasZeamays L.Maize is a C4 plant that shows few or no response to high [CO2]. Thus, this study aimed to analyze the photosynthetic rate and yield of maize under high [CO2] and develop open-top chambers (OTC) to create an atmosphere enriched with CO2. The experiment was conducted between October 2008 and March 2009. The OTCs were developed in modular scheme. Measurement of photosynthetic rates, transpiration, stomata conductance, grain yield and dry matter were performed. The experimental design was randomized blocks with four replications and three treatments: P1 - plants grown in OTC with 700 ppm [CO2], P2 - plants grown in OTC with environmental [CO2], and P3 - control, cultivated in open field. The results were analyzed by ANOVA and Tukey's test (Pr< 0.05). The chambers can reduce by 25% the photosynthetically active radiation and increase the air and leaf temperatures. Plants under high [CO2] (P1) showed the highest photosynthetic rates and the lowest stomata conductance and transpiration. The total weight of grains (g) and dry mass of shoots (g) showed no increases for P1, despite their higher photosynthetic rates.O milho é uma planta C4 que apresenta pouca, ou nenhuma, resposta às elevadas [CO2]; assim, neste trabalho, objetivou-se analisar respostas fisiológicas e produtivas da cultura do milho sob alta [CO2], e desenvolver câmaras de topo aberto (CTA) para criar uma atmosfera enriquecida com CO2. O experimento foi conduzido entre outubro de 2008 e março de 2009. As CTAs foram desenvolvidas em esquema modular. Foram realizadas medições da taxa fotossintética, transpiração, condutância estomática, produção de grãos e matéria seca. O delineamento experimental foi em blocos casualizados, com quatro repetições e três tratamentos: P1 - plantas cultivadas em CTA a [CO2] de 700ppm; P2 - plantas cultivadas em CTAcom [CO2] ambiente; e P3 -plantas cultivadas em campo aberto, testemunhas. Os resultados obtidos foram submetidos à análise de variância e teste de Tukey (Pr<0,05). As câmaras reduzem em 25% a Radiação Fotossinteticamente Ativa e aumentam a temperatura do ar e das folhas, em relação ao ambiente externo. As plantas sob alta [CO2] (P1) apresentaram as maiores taxas fotossintéticas e as menores condutâncias estomáticas e transpiração. O peso total dos grãos (g) e a matéria seca da parte aérea (g) não apresentaram incrementos para P1, apesar das maiores taxas fotossintéticas.Engenharia Agrícola2019-05-09T14:06:34Z2019-05-09T14:06:34Z2012-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf01006916http://dx.doi.org/10.1590/S0100-69162012000200010http://www.locus.ufv.br/handle/123456789/25122engv. 32, n. 02, p. 306- 314, mar./ abr. 2012Ferreira, Paulo A.Silva, João B. Lopes daPereira, Eduardo G.Costa, Luís C.Miranda, Glauco V.info:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFV2024-07-12T08:02:05Zoai:locus.ufv.br:123456789/25122Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452024-07-12T08:02:05LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv Development of experimental structure and influence of high CO2 concentration in maize cro
title Development of experimental structure and influence of high CO2 concentration in maize cro
spellingShingle Development of experimental structure and influence of high CO2 concentration in maize cro
Ferreira, Paulo A.
Open-top chambers
Climate change
Zea mays L.
Câmaras de topo aberto
Mudanças climáticas
Zeamays L.
title_short Development of experimental structure and influence of high CO2 concentration in maize cro
title_full Development of experimental structure and influence of high CO2 concentration in maize cro
title_fullStr Development of experimental structure and influence of high CO2 concentration in maize cro
title_full_unstemmed Development of experimental structure and influence of high CO2 concentration in maize cro
title_sort Development of experimental structure and influence of high CO2 concentration in maize cro
author Ferreira, Paulo A.
author_facet Ferreira, Paulo A.
Silva, João B. Lopes da
Pereira, Eduardo G.
Costa, Luís C.
Miranda, Glauco V.
author_role author
author2 Silva, João B. Lopes da
Pereira, Eduardo G.
Costa, Luís C.
Miranda, Glauco V.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ferreira, Paulo A.
Silva, João B. Lopes da
Pereira, Eduardo G.
Costa, Luís C.
Miranda, Glauco V.
dc.subject.por.fl_str_mv Open-top chambers
Climate change
Zea mays L.
Câmaras de topo aberto
Mudanças climáticas
Zeamays L.
topic Open-top chambers
Climate change
Zea mays L.
Câmaras de topo aberto
Mudanças climáticas
Zeamays L.
description Maize is a C4 plant that shows few or no response to high [CO2]. Thus, this study aimed to analyze the photosynthetic rate and yield of maize under high [CO2] and develop open-top chambers (OTC) to create an atmosphere enriched with CO2. The experiment was conducted between October 2008 and March 2009. The OTCs were developed in modular scheme. Measurement of photosynthetic rates, transpiration, stomata conductance, grain yield and dry matter were performed. The experimental design was randomized blocks with four replications and three treatments: P1 - plants grown in OTC with 700 ppm [CO2], P2 - plants grown in OTC with environmental [CO2], and P3 - control, cultivated in open field. The results were analyzed by ANOVA and Tukey's test (Pr< 0.05). The chambers can reduce by 25% the photosynthetically active radiation and increase the air and leaf temperatures. Plants under high [CO2] (P1) showed the highest photosynthetic rates and the lowest stomata conductance and transpiration. The total weight of grains (g) and dry mass of shoots (g) showed no increases for P1, despite their higher photosynthetic rates.
publishDate 2012
dc.date.none.fl_str_mv 2012-03
2019-05-09T14:06:34Z
2019-05-09T14:06:34Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv 01006916
http://dx.doi.org/10.1590/S0100-69162012000200010
http://www.locus.ufv.br/handle/123456789/25122
identifier_str_mv 01006916
url http://dx.doi.org/10.1590/S0100-69162012000200010
http://www.locus.ufv.br/handle/123456789/25122
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv v. 32, n. 02, p. 306- 314, mar./ abr. 2012
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv pdf
application/pdf
dc.publisher.none.fl_str_mv Engenharia Agrícola
publisher.none.fl_str_mv Engenharia Agrícola
dc.source.none.fl_str_mv reponame:LOCUS Repositório Institucional da UFV
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str LOCUS Repositório Institucional da UFV
collection LOCUS Repositório Institucional da UFV
repository.name.fl_str_mv LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv fabiojreis@ufv.br
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