Drought tolerance of wheat and black oat crops at early stages of seedling growth

Detalhes bibliográficos
Autor(a) principal: Steiner,Fábio
Data de Publicação: 2017
Outros Autores: Zuffo,Alan M., Zoz,Tiago, Zoz,André, Zoz,Jardel
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=S0871-018X2017000300010
Resumo: Seeds of wheat (Triticum aestivum L., cv. Jadeíte 11) and black oat (Avena strigosa Schreb., cv. Agro Planalto) were submitted to different osmotic potential levels induced by polyethylene glycol (PEG) with the objective of evaluate the effects of drought stress on seed germination and early seedling growth. Seeds were arranged in paper rolls and soaked in PEG solutions prepared with osmotic potentials form 0.0 (control), -0.2, -0.4, and -0.8 MPa and kept into a seed germinator, at 25°C for 15 days. A completely randomized design in a 2 × 4 factorial scheme with four replications of 50 seeds each was used. The results showed that by increasing of the osmotic potential level, germinated seeds number, germination rate index, root and shoot length, shoot and root dry matter, and seedling vigor index decreased, while mean germination time (MGT) and root:shoot ratio (RSR) increased in both crops. Additionally, black oat is more susceptible than wheat to drought stress, with germination response declining more rapidly with decreasing osmotic potential. Wheat crop tolerates water stress of up to -0.8 MPa, without reducing germination of the seeds; however, the growth of shoots and roots is drastically inhibited by the highly negative osmotic potential. The initial growth of black oat crop is progressively reduced with the rise of osmotic potential levels.
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spelling Drought tolerance of wheat and black oat crops at early stages of seedling growthAvena strigosa SchrebTriticum aestivum L.osmotic potentialPEGwater stressSeeds of wheat (Triticum aestivum L., cv. Jadeíte 11) and black oat (Avena strigosa Schreb., cv. Agro Planalto) were submitted to different osmotic potential levels induced by polyethylene glycol (PEG) with the objective of evaluate the effects of drought stress on seed germination and early seedling growth. Seeds were arranged in paper rolls and soaked in PEG solutions prepared with osmotic potentials form 0.0 (control), -0.2, -0.4, and -0.8 MPa and kept into a seed germinator, at 25°C for 15 days. A completely randomized design in a 2 × 4 factorial scheme with four replications of 50 seeds each was used. The results showed that by increasing of the osmotic potential level, germinated seeds number, germination rate index, root and shoot length, shoot and root dry matter, and seedling vigor index decreased, while mean germination time (MGT) and root:shoot ratio (RSR) increased in both crops. Additionally, black oat is more susceptible than wheat to drought stress, with germination response declining more rapidly with decreasing osmotic potential. Wheat crop tolerates water stress of up to -0.8 MPa, without reducing germination of the seeds; however, the growth of shoots and roots is drastically inhibited by the highly negative osmotic potential. The initial growth of black oat crop is progressively reduced with the rise of osmotic potential levels.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=S0871-018X2017000300010Revista 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=S0871-018X2017000300010Steiner,FábioZuffo,Alan M.Zoz,TiagoZoz,AndréZoz,Jardelinfo:eu-repo/semantics/openAccess2024-02-06T17:02:19Zoai:scielo:S0871-018X2017000300010Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:17:26.829658Repositório 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 Drought tolerance of wheat and black oat crops at early stages of seedling growth
title Drought tolerance of wheat and black oat crops at early stages of seedling growth
spellingShingle Drought tolerance of wheat and black oat crops at early stages of seedling growth
Steiner,Fábio
Avena strigosa Schreb
Triticum aestivum L.
osmotic potential
PEG
water stress
title_short Drought tolerance of wheat and black oat crops at early stages of seedling growth
title_full Drought tolerance of wheat and black oat crops at early stages of seedling growth
title_fullStr Drought tolerance of wheat and black oat crops at early stages of seedling growth
title_full_unstemmed Drought tolerance of wheat and black oat crops at early stages of seedling growth
title_sort Drought tolerance of wheat and black oat crops at early stages of seedling growth
author Steiner,Fábio
author_facet Steiner,Fábio
Zuffo,Alan M.
Zoz,Tiago
Zoz,André
Zoz,Jardel
author_role author
author2 Zuffo,Alan M.
Zoz,Tiago
Zoz,André
Zoz,Jardel
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Steiner,Fábio
Zuffo,Alan M.
Zoz,Tiago
Zoz,André
Zoz,Jardel
dc.subject.por.fl_str_mv Avena strigosa Schreb
Triticum aestivum L.
osmotic potential
PEG
water stress
topic Avena strigosa Schreb
Triticum aestivum L.
osmotic potential
PEG
water stress
description Seeds of wheat (Triticum aestivum L., cv. Jadeíte 11) and black oat (Avena strigosa Schreb., cv. Agro Planalto) were submitted to different osmotic potential levels induced by polyethylene glycol (PEG) with the objective of evaluate the effects of drought stress on seed germination and early seedling growth. Seeds were arranged in paper rolls and soaked in PEG solutions prepared with osmotic potentials form 0.0 (control), -0.2, -0.4, and -0.8 MPa and kept into a seed germinator, at 25°C for 15 days. A completely randomized design in a 2 × 4 factorial scheme with four replications of 50 seeds each was used. The results showed that by increasing of the osmotic potential level, germinated seeds number, germination rate index, root and shoot length, shoot and root dry matter, and seedling vigor index decreased, while mean germination time (MGT) and root:shoot ratio (RSR) increased in both crops. Additionally, black oat is more susceptible than wheat to drought stress, with germination response declining more rapidly with decreasing osmotic potential. Wheat crop tolerates water stress of up to -0.8 MPa, without reducing germination of the seeds; however, the growth of shoots and roots is drastically inhibited by the highly negative osmotic potential. The initial growth of black oat crop is progressively reduced with the rise of osmotic potential levels.
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=S0871-018X2017000300010
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300010
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2017000300010
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
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