Causes of dormancy in Ilex paraguariensis pyrenes

Detalhes bibliográficos
Autor(a) principal: Souza,Anieli Cioato de
Data de Publicação: 2022
Outros Autores: Oliveira,Luciana Magda de, Bagatini,Katiane Paula, Souza,Gabriela Fernanda, Liesch,Patricia Paloma, Schmidt,Sharline Schossler, Puchale,Louise Zago
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Rodriguésia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602022000100206
Resumo: Abstract Ilex parguariensis pyrenes, popularly known as “yerba mate”, were classified as dormant. This study aim to investigated the causes of dormancy in Ilex paraguariensis’ pyrenes. Hence, the following tests were performed: a) Physical dormancy: rate of absorption in water and methylene blue; detection of lignin and lipophilic compounds in the endocarp and integument; b) Physiological dormancy: bioassays in lettuce seeds, detection, and quantification of phenolic compounds; c) Morphological dormancy: embryo analysis. For the absorption rate, an increase was observed in the mass of the pyrenes, however, when imbibition was performed in methylene blue, absorption only occurred in the endocarp. Lignin was also observed in the form of a sclerenchyma layer next to the seed coat. Similarly, lipophilic compounds were observed in a layer, external to the endosperm. The bioassays with lettuce seeds indicated the presence of chemical inhibitors. In the morphological evaluation of the pyrenes, only 55.5% of the embryos were visualized and they were in the globular or heart stages. Ilex paraguariensis pyrenes have combined dormancy: physical (not water absorption), morphological (due to the underdeveloped embryo), and there are shreds of evidence about physiological dormancy (presence of inhibitors); however, it is recommended to investigate the inhibitory agent.
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spelling Causes of dormancy in Ilex paraguariensis pyrenescombined dormancyIlex paraguariensismorphological dormancyphysical dormancyphysiological dormancyAbstract Ilex parguariensis pyrenes, popularly known as “yerba mate”, were classified as dormant. This study aim to investigated the causes of dormancy in Ilex paraguariensis’ pyrenes. Hence, the following tests were performed: a) Physical dormancy: rate of absorption in water and methylene blue; detection of lignin and lipophilic compounds in the endocarp and integument; b) Physiological dormancy: bioassays in lettuce seeds, detection, and quantification of phenolic compounds; c) Morphological dormancy: embryo analysis. For the absorption rate, an increase was observed in the mass of the pyrenes, however, when imbibition was performed in methylene blue, absorption only occurred in the endocarp. Lignin was also observed in the form of a sclerenchyma layer next to the seed coat. Similarly, lipophilic compounds were observed in a layer, external to the endosperm. The bioassays with lettuce seeds indicated the presence of chemical inhibitors. In the morphological evaluation of the pyrenes, only 55.5% of the embryos were visualized and they were in the globular or heart stages. Ilex paraguariensis pyrenes have combined dormancy: physical (not water absorption), morphological (due to the underdeveloped embryo), and there are shreds of evidence about physiological dormancy (presence of inhibitors); however, it is recommended to investigate the inhibitory agent.Instituto de Pesquisas Jardim Botânico do Rio de Janeiro2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602022000100206Rodriguésia v.73 2022reponame:Rodriguésia (Online)instname:Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)instacron:JBRJ10.1590/2175-7860202273036info:eu-repo/semantics/openAccessSouza,Anieli Cioato deOliveira,Luciana Magda deBagatini,Katiane PaulaSouza,Gabriela FernandaLiesch,Patricia PalomaSchmidt,Sharline SchosslerPuchale,Louise Zagoeng2022-03-30T00:00:00Zoai:scielo:S2175-78602022000100206Revistahttp://rodriguesia.jbrj.gov.br/https://old.scielo.br/oai/scielo-oai.phprodriguesia@jbrj.gov.br2175-78600370-6583opendoar:2022-03-30T00:00Rodriguésia (Online) - Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)false
dc.title.none.fl_str_mv Causes of dormancy in Ilex paraguariensis pyrenes
title Causes of dormancy in Ilex paraguariensis pyrenes
spellingShingle Causes of dormancy in Ilex paraguariensis pyrenes
Souza,Anieli Cioato de
combined dormancy
Ilex paraguariensis
morphological dormancy
physical dormancy
physiological dormancy
title_short Causes of dormancy in Ilex paraguariensis pyrenes
title_full Causes of dormancy in Ilex paraguariensis pyrenes
title_fullStr Causes of dormancy in Ilex paraguariensis pyrenes
title_full_unstemmed Causes of dormancy in Ilex paraguariensis pyrenes
title_sort Causes of dormancy in Ilex paraguariensis pyrenes
author Souza,Anieli Cioato de
author_facet Souza,Anieli Cioato de
Oliveira,Luciana Magda de
Bagatini,Katiane Paula
Souza,Gabriela Fernanda
Liesch,Patricia Paloma
Schmidt,Sharline Schossler
Puchale,Louise Zago
author_role author
author2 Oliveira,Luciana Magda de
Bagatini,Katiane Paula
Souza,Gabriela Fernanda
Liesch,Patricia Paloma
Schmidt,Sharline Schossler
Puchale,Louise Zago
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Souza,Anieli Cioato de
Oliveira,Luciana Magda de
Bagatini,Katiane Paula
Souza,Gabriela Fernanda
Liesch,Patricia Paloma
Schmidt,Sharline Schossler
Puchale,Louise Zago
dc.subject.por.fl_str_mv combined dormancy
Ilex paraguariensis
morphological dormancy
physical dormancy
physiological dormancy
topic combined dormancy
Ilex paraguariensis
morphological dormancy
physical dormancy
physiological dormancy
description Abstract Ilex parguariensis pyrenes, popularly known as “yerba mate”, were classified as dormant. This study aim to investigated the causes of dormancy in Ilex paraguariensis’ pyrenes. Hence, the following tests were performed: a) Physical dormancy: rate of absorption in water and methylene blue; detection of lignin and lipophilic compounds in the endocarp and integument; b) Physiological dormancy: bioassays in lettuce seeds, detection, and quantification of phenolic compounds; c) Morphological dormancy: embryo analysis. For the absorption rate, an increase was observed in the mass of the pyrenes, however, when imbibition was performed in methylene blue, absorption only occurred in the endocarp. Lignin was also observed in the form of a sclerenchyma layer next to the seed coat. Similarly, lipophilic compounds were observed in a layer, external to the endosperm. The bioassays with lettuce seeds indicated the presence of chemical inhibitors. In the morphological evaluation of the pyrenes, only 55.5% of the embryos were visualized and they were in the globular or heart stages. Ilex paraguariensis pyrenes have combined dormancy: physical (not water absorption), morphological (due to the underdeveloped embryo), and there are shreds of evidence about physiological dormancy (presence of inhibitors); however, it is recommended to investigate the inhibitory agent.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602022000100206
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602022000100206
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/2175-7860202273036
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 Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
publisher.none.fl_str_mv Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
dc.source.none.fl_str_mv Rodriguésia v.73 2022
reponame:Rodriguésia (Online)
instname:Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)
instacron:JBRJ
instname_str Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)
instacron_str JBRJ
institution JBRJ
reponame_str Rodriguésia (Online)
collection Rodriguésia (Online)
repository.name.fl_str_mv Rodriguésia (Online) - Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (JBRJ)
repository.mail.fl_str_mv rodriguesia@jbrj.gov.br
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