Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research
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://hdl.handle.net/10174/21077 https://doi.org/10.1080/11263504.2016.1199604 |
Resumo: | Phytoactivity and allelopathic studies are heavily dependent on germination bioassays of water solutions of allelochemical(s), which necessarily imply that pH and osmotic pressure vary among treatments and between treatments and controls and are therefore a confounding factor in the assessment of seed germination responses to allelochemical(s). When the contribution of pH and osmotic pressure to seed germination responses is considered in experimental designs their effects are almost without exceptions examined separately being assumed, without any evidences, that pH and osmotic pressure act independently on seed germination responses. The objectives of this work were to examine experimentally such assumption using wheat, lettuce, and subterranean clover cultivars to evaluate and model the combined effects on germination of pH and osmotic pressure in the range 3.0-6.0 and 0-100 mOsmol·kg1 respectively. Empirical equations are fitted, discussed, and the need to consider the simultaneous effects of pH and osmotic pressure firmly established. Finally, the use of the equations fitted and its impact on conclusions is exemplified in a dose-response bioassay of water extracts of Cistus ladanifer on seed germination using subterranean clover as target species where hormesis was found before allelochemical effects were corrected for pH- and osmotic pressure-values of control and extracts. |
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Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic researchalelopatiapHgerminaçãopressão osmóticahormesisPhytoactivity and allelopathic studies are heavily dependent on germination bioassays of water solutions of allelochemical(s), which necessarily imply that pH and osmotic pressure vary among treatments and between treatments and controls and are therefore a confounding factor in the assessment of seed germination responses to allelochemical(s). When the contribution of pH and osmotic pressure to seed germination responses is considered in experimental designs their effects are almost without exceptions examined separately being assumed, without any evidences, that pH and osmotic pressure act independently on seed germination responses. The objectives of this work were to examine experimentally such assumption using wheat, lettuce, and subterranean clover cultivars to evaluate and model the combined effects on germination of pH and osmotic pressure in the range 3.0-6.0 and 0-100 mOsmol·kg1 respectively. Empirical equations are fitted, discussed, and the need to consider the simultaneous effects of pH and osmotic pressure firmly established. Finally, the use of the equations fitted and its impact on conclusions is exemplified in a dose-response bioassay of water extracts of Cistus ladanifer on seed germination using subterranean clover as target species where hormesis was found before allelochemical effects were corrected for pH- and osmotic pressure-values of control and extracts.2017-06-14T12:14:56Z2017-06-142017-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/21077http://hdl.handle.net/10174/21077https://doi.org/10.1080/11263504.2016.1199604engDias AS, Pereira IP, Dias LS 2017. Investigating and modeling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research. Plant Biosystems 151: 657-664.ICAAMalxandra@uevora.ptndnd363Dias, A.S.Pereira, I.P.Dias, L.S.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-08T04:25:45ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research |
title |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research |
spellingShingle |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research Dias, A.S. alelopatia pH germinação pressão osmótica hormesis |
title_short |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research |
title_full |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research |
title_fullStr |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research |
title_full_unstemmed |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research |
title_sort |
Investigating and modelling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research |
author |
Dias, A.S. |
author_facet |
Dias, A.S. Pereira, I.P. Dias, L.S. |
author_role |
author |
author2 |
Pereira, I.P. Dias, L.S. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Dias, A.S. Pereira, I.P. Dias, L.S. |
dc.subject.por.fl_str_mv |
alelopatia pH germinação pressão osmótica hormesis |
topic |
alelopatia pH germinação pressão osmótica hormesis |
description |
Phytoactivity and allelopathic studies are heavily dependent on germination bioassays of water solutions of allelochemical(s), which necessarily imply that pH and osmotic pressure vary among treatments and between treatments and controls and are therefore a confounding factor in the assessment of seed germination responses to allelochemical(s). When the contribution of pH and osmotic pressure to seed germination responses is considered in experimental designs their effects are almost without exceptions examined separately being assumed, without any evidences, that pH and osmotic pressure act independently on seed germination responses. The objectives of this work were to examine experimentally such assumption using wheat, lettuce, and subterranean clover cultivars to evaluate and model the combined effects on germination of pH and osmotic pressure in the range 3.0-6.0 and 0-100 mOsmol·kg1 respectively. Empirical equations are fitted, discussed, and the need to consider the simultaneous effects of pH and osmotic pressure firmly established. Finally, the use of the equations fitted and its impact on conclusions is exemplified in a dose-response bioassay of water extracts of Cistus ladanifer on seed germination using subterranean clover as target species where hormesis was found before allelochemical effects were corrected for pH- and osmotic pressure-values of control and extracts. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-06-14T12:14:56Z 2017-06-14 2017-01-01T00:00:00Z |
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://hdl.handle.net/10174/21077 http://hdl.handle.net/10174/21077 https://doi.org/10.1080/11263504.2016.1199604 |
url |
http://hdl.handle.net/10174/21077 https://doi.org/10.1080/11263504.2016.1199604 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Dias AS, Pereira IP, Dias LS 2017. Investigating and modeling the combined effects of pH and osmotic pressure on seed germination for use in phytoactivity and allelopathic research. Plant Biosystems 151: 657-664. ICAAM alxandra@uevora.pt nd nd 363 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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1777304628703002624 |