Allelopathic potential of Dodonaea viscosa (L.) Jacq.
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Iheringia. Série Botânica |
Texto Completo: | https://isb.emnuvens.com.br/iheringia/article/view/208 |
Resumo: | Dodonaea viscosa (L.) Jacq. presents the capacity to form dense and dominant populations, being possible the occurrence of allelopathy as one of the strategies in these populations establishment. With the purpose of verifying the existence of allelopathic potential in D. viscosa, germination and initial growth bioassays in Petri dishes were performed, using lettuce as target plant. Aqueous extracts of D. viscosa dryed leaves, at concentrations of 2 and 4%, obtained by static maceration with cold and hot water, were utilized. As control, distilled water was used. The pH, osmotic potential and yield of the extracts were determined to exclude non allelopathic effects. Tannins and saponins were detected in the extracts by qualitative phytochemical reactions. Both extracts prepared with cold water and the 4% extract obtained with hot water affected lettuce germination, altering the total germination, the average time, the average speed and the entropy of treated achene’s germination. The lettuce hypocotyl and root development was inhibited by the extracts obtained with hot water. The results indicate the existence of allelopathic potential in D. viscosa, once the extracts contain chemical substances possibly inhibitory to the germination. |
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Allelopathic potential of Dodonaea viscosa (L.) Jacq.Potencial alelopático de Dodonaea viscosa (L.) Jacq.allelopathyDodonaea viscosainhibitiongerminationgrowth.alelopatiaDodonaea viscosainibiçãogerminaçãocrescimento.Dodonaea viscosa (L.) Jacq. presents the capacity to form dense and dominant populations, being possible the occurrence of allelopathy as one of the strategies in these populations establishment. With the purpose of verifying the existence of allelopathic potential in D. viscosa, germination and initial growth bioassays in Petri dishes were performed, using lettuce as target plant. Aqueous extracts of D. viscosa dryed leaves, at concentrations of 2 and 4%, obtained by static maceration with cold and hot water, were utilized. As control, distilled water was used. The pH, osmotic potential and yield of the extracts were determined to exclude non allelopathic effects. Tannins and saponins were detected in the extracts by qualitative phytochemical reactions. Both extracts prepared with cold water and the 4% extract obtained with hot water affected lettuce germination, altering the total germination, the average time, the average speed and the entropy of treated achene’s germination. The lettuce hypocotyl and root development was inhibited by the extracts obtained with hot water. The results indicate the existence of allelopathic potential in D. viscosa, once the extracts contain chemical substances possibly inhibitory to the germination.Dodonaea viscosa (L.) Jacq. apresenta a capacidade de formar populações densas e dominantes, sendo possível a ocorrência de alelopatia como uma das estratégias no estabelecimento dessas populações. Com o objetivo de verificar a existência de potencial alelopático nessa espécie, foram realizados bioensaios de germinação e crescimento inicial em placas de Petri, usando-se alface como planta alvo. Extratos aquosos de folhas secas de D. viscosa, nas concentrações 2 e 4%, obtidos por maceração estática com água fria e quente, foram utilizados. Como controle, usou-se água destilada. Determinou-se o pH, o potencial osmótico e o resíduo dos extratos para excluir efeitos não alelopáticos. Taninos e saponinas foram detectados nos extratos por reações fitoquímicas qualitativas. Ambos extratos preparados a frio e o obtido a quente a 4% afetaram a germinação da alface, alterando a germinabilidade, o tempo médio, a velocidade média e a entropia de germinação dos aquênios tratados. O desenvolvimento do hipocótilo e da raiz da alface foi inibido pelos extratos obtidos a quente. Os resultados indicam a existência de potencial alelopático em D. viscosa, uma vez que os extratos contêm substâncias químicas possivelmente inibitórias à germinação.Iheringia. Série Botânica.Iheringia, Série Botânica.2005-06-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://isb.emnuvens.com.br/iheringia/article/view/208Iheringia. Série Botânica.; Vol. 60 No. 1 (2005); 92-98Iheringia, Série Botânica.; v. 60 n. 1 (2005); 92-982446-82310073-4705reponame:Iheringia. Série Botânicainstname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)instacron:FZB/RSporhttps://isb.emnuvens.com.br/iheringia/article/view/208/215Copyright (c) 2015 Iheringia. Série Botânica.info:eu-repo/semantics/openAccessMaraschin-Silva, FabianaAqüila, Maria Estefânia Alves2016-07-06T20:02:21Zoai:ojs.emnuvens.com.br:article/208Revistahttps://isb.emnuvens.com.br/iheringiaONGhttps://isb.emnuvens.com.br/iheringia/oai||iheringia-bot@fzb.rs.gov.br2446-82310073-4705opendoar:2016-07-06T20:02:21Iheringia. Série Botânica - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)false |
dc.title.none.fl_str_mv |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. Potencial alelopático de Dodonaea viscosa (L.) Jacq. |
title |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. |
spellingShingle |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. Maraschin-Silva, Fabiana allelopathy Dodonaea viscosa inhibition germination growth. alelopatia Dodonaea viscosa inibição germinação crescimento. |
title_short |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. |
title_full |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. |
title_fullStr |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. |
title_full_unstemmed |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. |
title_sort |
Allelopathic potential of Dodonaea viscosa (L.) Jacq. |
author |
Maraschin-Silva, Fabiana |
author_facet |
Maraschin-Silva, Fabiana Aqüila, Maria Estefânia Alves |
author_role |
author |
author2 |
Aqüila, Maria Estefânia Alves |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Maraschin-Silva, Fabiana Aqüila, Maria Estefânia Alves |
dc.subject.por.fl_str_mv |
allelopathy Dodonaea viscosa inhibition germination growth. alelopatia Dodonaea viscosa inibição germinação crescimento. |
topic |
allelopathy Dodonaea viscosa inhibition germination growth. alelopatia Dodonaea viscosa inibição germinação crescimento. |
description |
Dodonaea viscosa (L.) Jacq. presents the capacity to form dense and dominant populations, being possible the occurrence of allelopathy as one of the strategies in these populations establishment. With the purpose of verifying the existence of allelopathic potential in D. viscosa, germination and initial growth bioassays in Petri dishes were performed, using lettuce as target plant. Aqueous extracts of D. viscosa dryed leaves, at concentrations of 2 and 4%, obtained by static maceration with cold and hot water, were utilized. As control, distilled water was used. The pH, osmotic potential and yield of the extracts were determined to exclude non allelopathic effects. Tannins and saponins were detected in the extracts by qualitative phytochemical reactions. Both extracts prepared with cold water and the 4% extract obtained with hot water affected lettuce germination, altering the total germination, the average time, the average speed and the entropy of treated achene’s germination. The lettuce hypocotyl and root development was inhibited by the extracts obtained with hot water. The results indicate the existence of allelopathic potential in D. viscosa, once the extracts contain chemical substances possibly inhibitory to the germination. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-06-18 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://isb.emnuvens.com.br/iheringia/article/view/208 |
url |
https://isb.emnuvens.com.br/iheringia/article/view/208 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://isb.emnuvens.com.br/iheringia/article/view/208/215 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 Iheringia. Série Botânica. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 Iheringia. Série Botânica. |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Iheringia. Série Botânica. Iheringia, Série Botânica. |
publisher.none.fl_str_mv |
Iheringia. Série Botânica. Iheringia, Série Botânica. |
dc.source.none.fl_str_mv |
Iheringia. Série Botânica.; Vol. 60 No. 1 (2005); 92-98 Iheringia, Série Botânica.; v. 60 n. 1 (2005); 92-98 2446-8231 0073-4705 reponame:Iheringia. Série Botânica instname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) instacron:FZB/RS |
instname_str |
Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) |
instacron_str |
FZB/RS |
institution |
FZB/RS |
reponame_str |
Iheringia. Série Botânica |
collection |
Iheringia. Série Botânica |
repository.name.fl_str_mv |
Iheringia. Série Botânica - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) |
repository.mail.fl_str_mv |
||iheringia-bot@fzb.rs.gov.br |
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