Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds

Detalhes bibliográficos
Autor(a) principal: Silvestre, Daniel Moreto [UNESP]
Data de Publicação: 2013
Outros Autores: Kolb, Rosana Marta [UNESP], Frei, Fernando [UNESP], Santos, Catarina dos [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S0102-33062013000300003
http://hdl.handle.net/11449/75840
Resumo: We evaluated the phytotoxic effects that the hexane, ethyl acetate and methanol extracts from leaves and branches of the species Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. (Turneraceae), at concentrations of 1.25, 2.50, 3.75 and 5.00 mg ml-1, have on seed germination and seedling development in cucumber (Cucumis sativus L.). None of the extracts tested prevented germination, although the ethyl acetate extracts of T. diffusa, at 3.75 and 5.00 mg ml-1, reduced the mean germination speed and time to germination. Hexane extracts of both species reduced the main root length, number of secondary roots and hypocotyl length. In the ethyl acetate and methanol extracts, the number of secondary roots and hypocotyl length varied by species and concentration. Ethyl acetate extracts of T. ulmifolia at ≤ 2.50 mg ml-1stimulated growth of the main root and hypocotyl, as did T. ulmifolia methanol extracts at 1.25 and 3.75 mg ml-1; all other extract/concentration combinations had an inhibitory effect on those parameters. The hexane and ethyl acetate extracts of T. diffusa inhibited the formation of secondary roots and of the main root, although significant inhibition of hypocotyl growth was observed only at ≥ 2.50 mg ml-1. Comparatively, T. diffusa extracts inhibited development to a greater degree, thus presenting greater allelopathic potential, than did T. ulmifolia extracts.
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spelling Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seedsAllelopathyCucumis sativusDevelopmentGerminationWe evaluated the phytotoxic effects that the hexane, ethyl acetate and methanol extracts from leaves and branches of the species Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. (Turneraceae), at concentrations of 1.25, 2.50, 3.75 and 5.00 mg ml-1, have on seed germination and seedling development in cucumber (Cucumis sativus L.). None of the extracts tested prevented germination, although the ethyl acetate extracts of T. diffusa, at 3.75 and 5.00 mg ml-1, reduced the mean germination speed and time to germination. Hexane extracts of both species reduced the main root length, number of secondary roots and hypocotyl length. In the ethyl acetate and methanol extracts, the number of secondary roots and hypocotyl length varied by species and concentration. Ethyl acetate extracts of T. ulmifolia at ≤ 2.50 mg ml-1stimulated growth of the main root and hypocotyl, as did T. ulmifolia methanol extracts at 1.25 and 3.75 mg ml-1; all other extract/concentration combinations had an inhibitory effect on those parameters. The hexane and ethyl acetate extracts of T. diffusa inhibited the formation of secondary roots and of the main root, although significant inhibition of hypocotyl growth was observed only at ≥ 2.50 mg ml-1. Comparatively, T. diffusa extracts inhibited development to a greater degree, thus presenting greater allelopathic potential, than did T. ulmifolia extracts.Universidade Estadual Paulista 'Júlio Mesquita Filho' Departamento de Ciências Biológicas, Assis, SPUniversidade Estadual Paulista 'Júlio Mesquita Filho' Departamento de Ciências Biológicas, Assis, SPUniversidade Estadual Paulista (Unesp)Silvestre, Daniel Moreto [UNESP]Kolb, Rosana Marta [UNESP]Frei, Fernando [UNESP]Santos, Catarina dos [UNESP]2014-05-27T11:29:53Z2014-05-27T11:29:53Z2013-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article476-482application/pdfhttp://dx.doi.org/10.1590/S0102-33062013000300003Acta Botanica Brasilica, v. 27, n. 3, p. 476-482, 2013.0102-33061677-941Xhttp://hdl.handle.net/11449/7584010.1590/S0102-33062013000300003S0102-33062013000300003WOS:0003280781000032-s2.0-848837519212-s2.0-84883751921.pdf9548962911240501416527470850980446523849568039040000-0003-3841-5597Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengActa Botanica Brasilica0.8170,325info:eu-repo/semantics/openAccess2024-06-13T17:38:41Zoai:repositorio.unesp.br:11449/75840Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:17:04.329382Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
title Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
spellingShingle Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
Silvestre, Daniel Moreto [UNESP]
Allelopathy
Cucumis sativus
Development
Germination
title_short Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
title_full Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
title_fullStr Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
title_full_unstemmed Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
title_sort Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
author Silvestre, Daniel Moreto [UNESP]
author_facet Silvestre, Daniel Moreto [UNESP]
Kolb, Rosana Marta [UNESP]
Frei, Fernando [UNESP]
Santos, Catarina dos [UNESP]
author_role author
author2 Kolb, Rosana Marta [UNESP]
Frei, Fernando [UNESP]
Santos, Catarina dos [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Silvestre, Daniel Moreto [UNESP]
Kolb, Rosana Marta [UNESP]
Frei, Fernando [UNESP]
Santos, Catarina dos [UNESP]
dc.subject.por.fl_str_mv Allelopathy
Cucumis sativus
Development
Germination
topic Allelopathy
Cucumis sativus
Development
Germination
description We evaluated the phytotoxic effects that the hexane, ethyl acetate and methanol extracts from leaves and branches of the species Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. (Turneraceae), at concentrations of 1.25, 2.50, 3.75 and 5.00 mg ml-1, have on seed germination and seedling development in cucumber (Cucumis sativus L.). None of the extracts tested prevented germination, although the ethyl acetate extracts of T. diffusa, at 3.75 and 5.00 mg ml-1, reduced the mean germination speed and time to germination. Hexane extracts of both species reduced the main root length, number of secondary roots and hypocotyl length. In the ethyl acetate and methanol extracts, the number of secondary roots and hypocotyl length varied by species and concentration. Ethyl acetate extracts of T. ulmifolia at ≤ 2.50 mg ml-1stimulated growth of the main root and hypocotyl, as did T. ulmifolia methanol extracts at 1.25 and 3.75 mg ml-1; all other extract/concentration combinations had an inhibitory effect on those parameters. The hexane and ethyl acetate extracts of T. diffusa inhibited the formation of secondary roots and of the main root, although significant inhibition of hypocotyl growth was observed only at ≥ 2.50 mg ml-1. Comparatively, T. diffusa extracts inhibited development to a greater degree, thus presenting greater allelopathic potential, than did T. ulmifolia extracts.
publishDate 2013
dc.date.none.fl_str_mv 2013-07-01
2014-05-27T11:29:53Z
2014-05-27T11:29:53Z
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://dx.doi.org/10.1590/S0102-33062013000300003
Acta Botanica Brasilica, v. 27, n. 3, p. 476-482, 2013.
0102-3306
1677-941X
http://hdl.handle.net/11449/75840
10.1590/S0102-33062013000300003
S0102-33062013000300003
WOS:000328078100003
2-s2.0-84883751921
2-s2.0-84883751921.pdf
9548962911240501
4165274708509804
4652384956803904
0000-0003-3841-5597
url http://dx.doi.org/10.1590/S0102-33062013000300003
http://hdl.handle.net/11449/75840
identifier_str_mv Acta Botanica Brasilica, v. 27, n. 3, p. 476-482, 2013.
0102-3306
1677-941X
10.1590/S0102-33062013000300003
S0102-33062013000300003
WOS:000328078100003
2-s2.0-84883751921
2-s2.0-84883751921.pdf
9548962911240501
4165274708509804
4652384956803904
0000-0003-3841-5597
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Acta Botanica Brasilica
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 476-482
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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