Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
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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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 0.817 0,325 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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) |
repository.mail.fl_str_mv |
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1808129183391416320 |