Alteraçíμes morphological and growth of two grass species under flooding
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , |
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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Revista de Ciências Agrárias (Belém. Online) |
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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 |
format |
article |
status_str |
publishedVersion |
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 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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) instacron:UFRA |
instname_str |
Universidade Federal Rural da Amazônia (UFRA) |
instacron_str |
UFRA |
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 |
_version_ |
1797231625981919232 |