Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae)
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1413-70542008000500016 http://hdl.handle.net/11449/212867 |
Resumo: | Dypsis decaryi (Jum.) Beentje & J. Dransf. is an important palm with ornamental commercial value. Although it reproduces sexually, there are no data available as far as what are the factors that affect this species seed germination. The purpose of this work is to study the potential effects of temperature and substrate in Dypsis decaryi seed germination. The research framework is based on randomization, using a 6 X 2 factorial schema (six different temperatures, 25ºC, 30ºC, 35ºC, 20-30ºC, 25-35ºC and room temperature, combined with two types of substratum, sand and vermiculite) with 5 repetitions of 20 seeds. The researcher made daily records on the number of germinated seeds, and the criteria used was protusion of the germination plug. After 35 days data become stable. The Index of Germination Speed (IVG) and germination percentage were then calculated (data were converted to sen). The averages for these two indexes were compared using the Scott-Knott method with a probability of 5%. The data show that the higher percentages of germination were obtained with a sand substratum at temperatures of 25ºC (86%), 25-35ºC (92%) and lab room temperature (93%), and with a vermiculite substratum, at temperatures of 25ºC (76%), 30ºC (83%), 20-30ºC (87%), 25-35ºC (80%) and room temperature (91%). The seeds germinated sooner in the lab environment, for both substrates. The percentage of germination at 35ºC was markedly lower, both on sand (21%) and vermiculite (38%). In this case, the seeds took longer to germinate and germination was not uniform. |
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Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae)Germination of Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) seedsPalmsexual reproductiongermination studyDypsis decaryiPalmeirapropagação sexuadateste de germinaçãoDypsis decaryiDypsis decaryi (Jum.) Beentje & J. Dransf. is an important palm with ornamental commercial value. Although it reproduces sexually, there are no data available as far as what are the factors that affect this species seed germination. The purpose of this work is to study the potential effects of temperature and substrate in Dypsis decaryi seed germination. The research framework is based on randomization, using a 6 X 2 factorial schema (six different temperatures, 25ºC, 30ºC, 35ºC, 20-30ºC, 25-35ºC and room temperature, combined with two types of substratum, sand and vermiculite) with 5 repetitions of 20 seeds. The researcher made daily records on the number of germinated seeds, and the criteria used was protusion of the germination plug. After 35 days data become stable. The Index of Germination Speed (IVG) and germination percentage were then calculated (data were converted to sen). The averages for these two indexes were compared using the Scott-Knott method with a probability of 5%. The data show that the higher percentages of germination were obtained with a sand substratum at temperatures of 25ºC (86%), 25-35ºC (92%) and lab room temperature (93%), and with a vermiculite substratum, at temperatures of 25ºC (76%), 30ºC (83%), 20-30ºC (87%), 25-35ºC (80%) and room temperature (91%). The seeds germinated sooner in the lab environment, for both substrates. The percentage of germination at 35ºC was markedly lower, both on sand (21%) and vermiculite (38%). In this case, the seeds took longer to germinate and germination was not uniform.Dypsis decaryi (Jum.) Beentje & J. Dransf. é uma importante palmeira comercializada para fins ornamentais. Embora seja propagada sexuadamente, não há informações na literatura sobre os fatores que afetam a germinação das sementes dessa espécie. Objetivou-se, neste trabalho estudar o efeito da temperatura e do substrato na germinação de sementes de Dypsis decaryi. O delineamento experimental foi o inteiramente casualizado em esquema fatorial 6 x 2 (seis temperaturas: 25ºC, 30ºC, 35ºC, 20-30ºC e 25-35ºC e ambiente combinadas com dois substratos: vermiculita e areia), com 5 repetições de 20 sementes. Anotou-se, diariamente, o número de sementes germinadas adotando como critério de germinação a protrusão do botão germinativo. Após 35 dias houve estabilização dos dados e foi calculado o Índice de Velocidade de Germinação (IVG) e a porcentagem de germinação (dados transformados em arc sen √x/100) cujas médias foram comparadas pelo teste de Scott-Knott, a 5% de probabilidade. Observou-se que maiores porcentagens de germinação de sementes de Dypsis decaryi foram obtidas quando colocadas para germinar em areia nas temperaturas ambiente de laboratório (93%), 25-35ºC (92%) e 25ºC (86%), e em vermiculita, nas temperaturas de ambiente (91%), 20-30ºC (87%), 30ºC (83%), 25-35ºC (80%) e 25ºC (76%). As sementes germinaram mais rápido em condições de ambiente de laboratório independentemente do substrato. Na temperatura de 35ºC a porcentagem de germinação foi bastante reduzida tanto em areia (21%) como em vermiculita (38%); as sementes germinaram mais lentamente e a germinação foi desuniforme.Universidade Estadual Paulista, Departamento de Produção VegetalUniversidade do Estado de Mato Grosso, Departamento de AgronomiaUniversidade Estadual Paulista, Departamento de Produção VegetalEditora da Universidade Federal de LavrasUniversidade Estadual Paulista (Unesp)Universidade do Estado de Mato GrossoLuz, Petterson Baptista DaPimenta, Ricardo Soares [UNESP]Pizetta, Patricia Unger César [UNESP]Castro, Amanda De [UNESP]Pivetta, Kathia Fernandes Lopes [UNESP]2021-07-14T10:46:25Z2021-07-14T10:46:25Z2008-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1461-1466application/pdfhttp://dx.doi.org/10.1590/S1413-70542008000500016Ciência e Agrotecnologia. Lavras, MG, Brazil: Editora da Universidade Federal de Lavras, v. 32, n. 5, p. 1461-1466, 2008.1413-70541981-1829http://hdl.handle.net/11449/21286710.1590/S1413-70542008000500016S1413-70542008000500016S1413-70542008000500016.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporCiência e Agrotecnologiainfo:eu-repo/semantics/openAccess2023-11-30T06:18:11Zoai:repositorio.unesp.br:11449/212867Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-30T06:18:11Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) Germination of Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) seeds |
title |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) |
spellingShingle |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) Luz, Petterson Baptista Da Palm sexual reproduction germination study Dypsis decaryi Palmeira propagação sexuada teste de germinação Dypsis decaryi |
title_short |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) |
title_full |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) |
title_fullStr |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) |
title_full_unstemmed |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) |
title_sort |
Germinação de sementes de Dypsis decaryi (Jum.) Beentje & J. Dransf. (Arecaceae) |
author |
Luz, Petterson Baptista Da |
author_facet |
Luz, Petterson Baptista Da Pimenta, Ricardo Soares [UNESP] Pizetta, Patricia Unger César [UNESP] Castro, Amanda De [UNESP] Pivetta, Kathia Fernandes Lopes [UNESP] |
author_role |
author |
author2 |
Pimenta, Ricardo Soares [UNESP] Pizetta, Patricia Unger César [UNESP] Castro, Amanda De [UNESP] Pivetta, Kathia Fernandes Lopes [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade do Estado de Mato Grosso |
dc.contributor.author.fl_str_mv |
Luz, Petterson Baptista Da Pimenta, Ricardo Soares [UNESP] Pizetta, Patricia Unger César [UNESP] Castro, Amanda De [UNESP] Pivetta, Kathia Fernandes Lopes [UNESP] |
dc.subject.por.fl_str_mv |
Palm sexual reproduction germination study Dypsis decaryi Palmeira propagação sexuada teste de germinação Dypsis decaryi |
topic |
Palm sexual reproduction germination study Dypsis decaryi Palmeira propagação sexuada teste de germinação Dypsis decaryi |
description |
Dypsis decaryi (Jum.) Beentje & J. Dransf. is an important palm with ornamental commercial value. Although it reproduces sexually, there are no data available as far as what are the factors that affect this species seed germination. The purpose of this work is to study the potential effects of temperature and substrate in Dypsis decaryi seed germination. The research framework is based on randomization, using a 6 X 2 factorial schema (six different temperatures, 25ºC, 30ºC, 35ºC, 20-30ºC, 25-35ºC and room temperature, combined with two types of substratum, sand and vermiculite) with 5 repetitions of 20 seeds. The researcher made daily records on the number of germinated seeds, and the criteria used was protusion of the germination plug. After 35 days data become stable. The Index of Germination Speed (IVG) and germination percentage were then calculated (data were converted to sen). The averages for these two indexes were compared using the Scott-Knott method with a probability of 5%. The data show that the higher percentages of germination were obtained with a sand substratum at temperatures of 25ºC (86%), 25-35ºC (92%) and lab room temperature (93%), and with a vermiculite substratum, at temperatures of 25ºC (76%), 30ºC (83%), 20-30ºC (87%), 25-35ºC (80%) and room temperature (91%). The seeds germinated sooner in the lab environment, for both substrates. The percentage of germination at 35ºC was markedly lower, both on sand (21%) and vermiculite (38%). In this case, the seeds took longer to germinate and germination was not uniform. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-10 2021-07-14T10:46:25Z 2021-07-14T10:46:25Z |
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/S1413-70542008000500016 Ciência e Agrotecnologia. Lavras, MG, Brazil: Editora da Universidade Federal de Lavras, v. 32, n. 5, p. 1461-1466, 2008. 1413-7054 1981-1829 http://hdl.handle.net/11449/212867 10.1590/S1413-70542008000500016 S1413-70542008000500016 S1413-70542008000500016.pdf |
url |
http://dx.doi.org/10.1590/S1413-70542008000500016 http://hdl.handle.net/11449/212867 |
identifier_str_mv |
Ciência e Agrotecnologia. Lavras, MG, Brazil: Editora da Universidade Federal de Lavras, v. 32, n. 5, p. 1461-1466, 2008. 1413-7054 1981-1829 10.1590/S1413-70542008000500016 S1413-70542008000500016 S1413-70542008000500016.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Ciência e Agrotecnologia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1461-1466 application/pdf |
dc.publisher.none.fl_str_mv |
Editora da Universidade Federal de Lavras |
publisher.none.fl_str_mv |
Editora da Universidade Federal de Lavras |
dc.source.none.fl_str_mv |
SciELO 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 |
|
_version_ |
1792961960021590016 |