Rice growth under water stress levels imposed at distinct developmental stages
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300011 |
Resumo: | We aimed to assess rice growth as function of water stress at distinct crop stages, under greenhouse, using randomized block design and factorial scheme 3 × 4 + 1, with four replications. Factor A was the growth stage when water stress was imposed, being (1) vegetative, (2) reproductive 1, and (3) reproductive 2; factor B was four levels of water stress (0 - 200 kPa). The additional treatment consisted of a flooded check. Water was replenished to saturation every time the threshold stress was reached. Rice height is reduced when stress is applied either at vegetative or reproductive stages; tillering was affected only by water stress at the vegetative stage, and plants did not recover after the stress was withdrawn; surplus in leaf area is likely to help recovering plant performance from stress applied at the vegetative stage; water content was not affected by water stress, but shoot dry mass of culms was reduced with stress between tillering start and anthesis; root volume did not increase as function of water stress at the vegetative stage. Rice growth is little affected by the absence of waterlogging, but stress levels should be below 30 kPa throughout cropping cycle. |
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Rice growth under water stress levels imposed at distinct developmental stagesOryza sativaphenologywater demandWe aimed to assess rice growth as function of water stress at distinct crop stages, under greenhouse, using randomized block design and factorial scheme 3 × 4 + 1, with four replications. Factor A was the growth stage when water stress was imposed, being (1) vegetative, (2) reproductive 1, and (3) reproductive 2; factor B was four levels of water stress (0 - 200 kPa). The additional treatment consisted of a flooded check. Water was replenished to saturation every time the threshold stress was reached. Rice height is reduced when stress is applied either at vegetative or reproductive stages; tillering was affected only by water stress at the vegetative stage, and plants did not recover after the stress was withdrawn; surplus in leaf area is likely to help recovering plant performance from stress applied at the vegetative stage; water content was not affected by water stress, but shoot dry mass of culms was reduced with stress between tillering start and anthesis; root volume did not increase as function of water stress at the vegetative stage. Rice growth is little affected by the absence of waterlogging, but stress levels should be below 30 kPa throughout cropping cycle.Sociedade de Ciências Agrárias de Portugal2017-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300011Revista de Ciências Agrárias v.40 n.3 2017reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300011Parfitt,José Maria BarbatConcenço,GermaniDowning,KellyLarue,JakeSilva,Jaqueline Trombetta dainfo:eu-repo/semantics/openAccess2024-02-06T17:02:19Zoai:scielo:S0871-018X2017000300011Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:17:26.875739Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Rice growth under water stress levels imposed at distinct developmental stages |
title |
Rice growth under water stress levels imposed at distinct developmental stages |
spellingShingle |
Rice growth under water stress levels imposed at distinct developmental stages Parfitt,José Maria Barbat Oryza sativa phenology water demand |
title_short |
Rice growth under water stress levels imposed at distinct developmental stages |
title_full |
Rice growth under water stress levels imposed at distinct developmental stages |
title_fullStr |
Rice growth under water stress levels imposed at distinct developmental stages |
title_full_unstemmed |
Rice growth under water stress levels imposed at distinct developmental stages |
title_sort |
Rice growth under water stress levels imposed at distinct developmental stages |
author |
Parfitt,José Maria Barbat |
author_facet |
Parfitt,José Maria Barbat Concenço,Germani Downing,Kelly Larue,Jake Silva,Jaqueline Trombetta da |
author_role |
author |
author2 |
Concenço,Germani Downing,Kelly Larue,Jake Silva,Jaqueline Trombetta da |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Parfitt,José Maria Barbat Concenço,Germani Downing,Kelly Larue,Jake Silva,Jaqueline Trombetta da |
dc.subject.por.fl_str_mv |
Oryza sativa phenology water demand |
topic |
Oryza sativa phenology water demand |
description |
We aimed to assess rice growth as function of water stress at distinct crop stages, under greenhouse, using randomized block design and factorial scheme 3 × 4 + 1, with four replications. Factor A was the growth stage when water stress was imposed, being (1) vegetative, (2) reproductive 1, and (3) reproductive 2; factor B was four levels of water stress (0 - 200 kPa). The additional treatment consisted of a flooded check. Water was replenished to saturation every time the threshold stress was reached. Rice height is reduced when stress is applied either at vegetative or reproductive stages; tillering was affected only by water stress at the vegetative stage, and plants did not recover after the stress was withdrawn; surplus in leaf area is likely to help recovering plant performance from stress applied at the vegetative stage; water content was not affected by water stress, but shoot dry mass of culms was reduced with stress between tillering start and anthesis; root volume did not increase as function of water stress at the vegetative stage. Rice growth is little affected by the absence of waterlogging, but stress levels should be below 30 kPa throughout cropping cycle. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09-01 |
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 |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300011 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300011 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade de Ciências Agrárias de Portugal |
publisher.none.fl_str_mv |
Sociedade de Ciências Agrárias de Portugal |
dc.source.none.fl_str_mv |
Revista de Ciências Agrárias v.40 n.3 2017 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
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1799137268577861632 |