Alteraçíμes morphological and growth of two grass species under flooding

Detalhes bibliográficos
Autor(a) principal: Ramos, Terezinha de Jesus Nery Silva
Data de Publicação: 2011
Outros Autores: Carvalho, Cláudio José Reis de, Souza, Cleo Marcelo de Araújo Silva, Vasconcelos, Steel Silva
Tipo de documento: Artigo
Idioma: por
Título da fonte: Revista de Ciências Agrárias (Belém. Online)
Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/73
Resumo: Abstract: This study aimed to investigate the morphological and growth responses of Brachiaria and Paspalum fasciculatum Brizantha grown for 21 days under waterlogged conditions. The low oxygen availability due to waterlogging significantly reduced the relative growth rate and net assimilation Brachiaria, as well as biomass allocation to roots after 14 days of flooding. In P. fasciculatum, reductions in the rate and biomass allocation were significant only after 21 days of flooding. In the studied species, the morphological adaptations were clearly evidenced by the formation of large numbers of adventitious roots, which probably contributed to their survival to hypoxia. These results indicate that P. fasciculatum species are more tolerant to flooding when compared with Brachiaria.
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spelling Alteraçíμes morphological and growth of two grass species under floodingAlteraçíµes morfológicas e crescimento de duas espécies gramíneas sob alagamentoAbstract: This study aimed to investigate the morphological and growth responses of Brachiaria and Paspalum fasciculatum Brizantha grown for 21 days under waterlogged conditions. The low oxygen availability due to waterlogging significantly reduced the relative growth rate and net assimilation Brachiaria, as well as biomass allocation to roots after 14 days of flooding. In P. fasciculatum, reductions in the rate and biomass allocation were significant only after 21 days of flooding. In the studied species, the morphological adaptations were clearly evidenced by the formation of large numbers of adventitious roots, which probably contributed to their survival to hypoxia. These results indicate that P. fasciculatum species are more tolerant to flooding when compared with Brachiaria.Resumo: Este trabalho objetivou investigar as respostas morfológicas e o crescimento de Brachiaria brizantha e Paspalum fasciculatum cultivadas durante 21 dias sob condições de alagamento. A baixa disponibilidade de oxigênio devido ao alagamento reduziu significativamente as taxas de crescimento relativo e assimilatória líquida de B. brizantha, assim como a alocação de biomassa para raízes, aos 14 dias de alagamento. Em P. fasciculatum, as reduções das taxas e da alocação de biomassa foram significativas somente aos 21 dias de alagamento. Nas espécies estudadas, as adaptações morfológicas foram claramente evidenciadas com a formação de grande quantidade de raízes adventícias, que provavelmente contribuíram para a sobrevivência das mesmas à hipóxia. Estes resultados indicam que a espécie P. fasciculatum é mais tolerante ao alagamento quando comparada com B. brizantha.Universidade Federal Rural da Amazônia/UFRA2011-03-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/73Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 53 No 1 (2010): RCA; 5-11Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 53 n. 1 (2010): RCA; 5-112177-87601517-591Xreponame:Revista de Ciências Agrárias (Belém. Online)instname:Universidade Federal Rural da Amazônia (UFRA)instacron:UFRAporhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/73/79Ramos, Terezinha de Jesus Nery SilvaCarvalho, Cláudio José Reis deSouza, Cleo Marcelo de Araújo SilvaVasconcelos, Steel Silvainfo:eu-repo/semantics/openAccess2018-12-18T19:11:28Zoai:ojs.www.periodicos.ufra.edu.br:article/73Revistahttps://ajaes.ufra.edu.br/index.php/ajaes/PUBhttps://ajaes.ufra.edu.br/index.php/ajaes/oaiallan.lobato@ufra.edu.br || ajaes.suporte@gmail.com2177-87601517-591Xopendoar:2018-12-18T19:11:28Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA)false
dc.title.none.fl_str_mv Alteraçíμes morphological and growth of two grass species under flooding
Alteraçíµes morfológicas e crescimento de duas espécies gramíneas sob alagamento
title Alteraçíμes morphological and growth of two grass species under flooding
spellingShingle Alteraçíμes morphological and growth of two grass species under flooding
Ramos, Terezinha de Jesus Nery Silva
title_short Alteraçíμes morphological and growth of two grass species under flooding
title_full Alteraçíμes morphological and growth of two grass species under flooding
title_fullStr Alteraçíμes morphological and growth of two grass species under flooding
title_full_unstemmed Alteraçíμes morphological and growth of two grass species under flooding
title_sort Alteraçíμes morphological and growth of two grass species under flooding
author Ramos, Terezinha de Jesus Nery Silva
author_facet Ramos, Terezinha de Jesus Nery Silva
Carvalho, Cláudio José Reis de
Souza, Cleo Marcelo de Araújo Silva
Vasconcelos, Steel Silva
author_role author
author2 Carvalho, Cláudio José Reis de
Souza, Cleo Marcelo de Araújo Silva
Vasconcelos, Steel Silva
author2_role author
author
author
dc.contributor.author.fl_str_mv Ramos, Terezinha de Jesus Nery Silva
Carvalho, Cláudio José Reis de
Souza, Cleo Marcelo de Araújo Silva
Vasconcelos, Steel Silva
description Abstract: This study aimed to investigate the morphological and growth responses of Brachiaria and Paspalum fasciculatum Brizantha grown for 21 days under waterlogged conditions. The low oxygen availability due to waterlogging significantly reduced the relative growth rate and net assimilation Brachiaria, as well as biomass allocation to roots after 14 days of flooding. In P. fasciculatum, reductions in the rate and biomass allocation were significant only after 21 days of flooding. In the studied species, the morphological adaptations were clearly evidenced by the formation of large numbers of adventitious roots, which probably contributed to their survival to hypoxia. These results indicate that P. fasciculatum species are more tolerant to flooding when compared with Brachiaria.
publishDate 2011
dc.date.none.fl_str_mv 2011-03-12
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv https://ajaes.ufra.edu.br/index.php/ajaes/article/view/73
url https://ajaes.ufra.edu.br/index.php/ajaes/article/view/73
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ajaes.ufra.edu.br/index.php/ajaes/article/view/73/79
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Universidade Federal Rural da Amazônia/UFRA
publisher.none.fl_str_mv Universidade Federal Rural da Amazônia/UFRA
dc.source.none.fl_str_mv Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 53 No 1 (2010): RCA; 5-11
Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 53 n. 1 (2010): RCA; 5-11
2177-8760
1517-591X
reponame:Revista de Ciências Agrárias (Belém. Online)
instname:Universidade Federal Rural da Amazônia (UFRA)
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instname_str Universidade Federal Rural da Amazônia (UFRA)
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institution UFRA
reponame_str Revista de Ciências Agrárias (Belém. Online)
collection Revista de Ciências Agrárias (Belém. Online)
repository.name.fl_str_mv Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA)
repository.mail.fl_str_mv allan.lobato@ufra.edu.br || ajaes.suporte@gmail.com
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