Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae)
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional Manancial UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/4903 |
Resumo: | Bromeliaceae is one of the important neotropical families. It has approximately 3501 species. Pitcairnioideae has about 170 species. The present study aims to analyze and characterize the sporogenesis and gametogenesis in anthers and seminal rudiments of Dyckia polyclada L.B. Sm. (Pitcairnioideae-Bromeliaceae). Dyckia polyclada L.B.Sm. is native and endemic to Rio Grande do Sul and it is found in the central area of the state. The species presents perfect trimerous and heterochlamydous flowers. The androecium consists of six stamens, tetrasporangiate and dorsifixed anthers. Nine different phases of development were defined when it comes to the chemical constituents of the anthers. Only starch was detected in the connective. Starch and reserve lipids were observed in sporangia, microspores and pollen grains. The pollenkitt presents neutral lipids, essential oils and oleoresins in its chemical composition. The ovary in D. polyclada is superior, tricarpellate, trilocular and polispermic. Placentation is axial. The stigma is trífid of the conduplicate spiral. The ovules are anatropous, bitegmic and crassinucellate. The teguments are from dermic origin. The micropyle is formed by the inner tegument. The gametophyte is monosporic of the Polygonum type. The fibrillar aparattus is from pectic nature. Infralocular, labyrinthine and unstructured septal nectaries are present. The chalazal appendix is short and curved toward the raphe and features elongated cells with intracellular spaces. The obturator in D. polyclada has elongated dome-shaped cells and dense, vacuolated cytoplasm, coating the entire placental region. The presented data are unprecedented to the species and contribute to the understanding of the phylogenetic relationships within the family and for better understanding of the functioning of the reproductive process of Dyckia polyclada, given that, for lack of studies, the species is in the category of insufficient data and one cannot diagnose the degree of extinction. |
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2016-07-142016-07-142016-03-10MARTINS, Merielem Saldanha. Embryological development of Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae). 2016. 98 f. Dissertação (Mestrado em Ciências Biológicas) - Universidade Federal de Santa Maria, Santa Maria, 2016.http://repositorio.ufsm.br/handle/1/4903Bromeliaceae is one of the important neotropical families. It has approximately 3501 species. Pitcairnioideae has about 170 species. The present study aims to analyze and characterize the sporogenesis and gametogenesis in anthers and seminal rudiments of Dyckia polyclada L.B. Sm. (Pitcairnioideae-Bromeliaceae). Dyckia polyclada L.B.Sm. is native and endemic to Rio Grande do Sul and it is found in the central area of the state. The species presents perfect trimerous and heterochlamydous flowers. The androecium consists of six stamens, tetrasporangiate and dorsifixed anthers. Nine different phases of development were defined when it comes to the chemical constituents of the anthers. Only starch was detected in the connective. Starch and reserve lipids were observed in sporangia, microspores and pollen grains. The pollenkitt presents neutral lipids, essential oils and oleoresins in its chemical composition. The ovary in D. polyclada is superior, tricarpellate, trilocular and polispermic. Placentation is axial. The stigma is trífid of the conduplicate spiral. The ovules are anatropous, bitegmic and crassinucellate. The teguments are from dermic origin. The micropyle is formed by the inner tegument. The gametophyte is monosporic of the Polygonum type. The fibrillar aparattus is from pectic nature. Infralocular, labyrinthine and unstructured septal nectaries are present. The chalazal appendix is short and curved toward the raphe and features elongated cells with intracellular spaces. The obturator in D. polyclada has elongated dome-shaped cells and dense, vacuolated cytoplasm, coating the entire placental region. The presented data are unprecedented to the species and contribute to the understanding of the phylogenetic relationships within the family and for better understanding of the functioning of the reproductive process of Dyckia polyclada, given that, for lack of studies, the species is in the category of insufficient data and one cannot diagnose the degree of extinction.Bromeliaceae é umas das importantes famílias neotropicais. Possui aproximadamente 3501 espécies. Pitcairnioideae apresenta cerca de 170 espécies. O presente trabalho tem por objetivo analisar e caracterizar a esporogênese e a gametogênese em anteras e em rudimentos seminais em Dyckia polyclada L.B. Sm. (Pitcairnioideae-Bromeliaceae). Dyckia polyclada L.B. Sm. é nativa e endêmica do Rio Grande do Sul, sendo encontrada na região central do estado. A espécie apresenta flores perfeitas, trímeras e heteroclamídeas. O androceu é composto por seis estames, anteras tetraesporângiadas e dorsifixas. Quanto a investigação sobre os contítuintes químicos da antera foram definidos nove estádios distintos de desenvolvimento. Apenas amido foi detectado no conectivo. Amido e lipídios de reserva foram observados nos esporângios, micrósporos e grãos de pólen. O pollenkitt apresenta lipídios neutros, óleos essenciais e oleorresinas em sua composição química. O ovário de D. polyclada é súpero, tricarpelar, trilocular e plurispérmico. A placentação é do tipo axial. O estigma é trífido do tipo espiral conduplicado. Os rudimentos seminais são anátropos, bitegumentados e crassinucelados. Os tegumentos são de origem dérmica. O canal micropilar é formado pelo tegumento interno. O gametófito é de origem monospórica e do tipo Polygonum. O aparelho fibrilar é de natureza péctica. Nectários septais infraloculares, labirínticos e não estruturados estão presentes. O apêndice calazal é curto e curvo em direção a rafe e apresenta células alongadas e com espaços intracelulares. O obturador em D. polyclada apresenta células alongadas em forma de domo e citoplasma denso e vacuolado, revestindo toda a região placentária. Os dados apresentados são inéditos para a espécie e contribuem para a compreensão das relações filogenéticas dentro da família e para melhor entendimento do funcionamento do processo reprodutivo de Dyckia polyclada, tendo em vista que a espécie, por falta de estudos, encontra-se na categoria de dados insuficientes e não se pode diagnosticar o grau de risco de extinção.application/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em AgrobiologiaUFSMBRCiências BiológicasDyckiaEsporogênseGametogêneseAmidoLipídiosDyckiaSporogenesisGametogenesisStarchLipidsCNPQ::CIENCIAS BIOLOGICASDesenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae)Embryological development of Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisOliveira, João Marcelo Santos dehttp://lattes.cnpq.br/3533863401498975Simão, Daniela Guimarãeshttp://lattes.cnpq.br/8597424381029448Mastroberti, Alexandra Antuneshttp://lattes.cnpq.br/3971777560277714http://lattes.cnpq.br/6640957471503995Martins, Merielem Saldanha20000000000640030030030050022db14dd-f6e7-46d0-bfec-752600dac2c4a1771240-daa7-4eb1-9f29-4918a8110acca5ec2c81-87ac-4047-8847-d46c31c9d91a0a663d9a-ea5e-4bbc-bc43-805607d10dacinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional Manancial UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALMARTINS, MERIELEM SALDANHA.pdfapplication/pdf1492400http://repositorio.ufsm.br/bitstream/1/4903/1/MARTINS%2c%20MERIELEM%20SALDANHA.pdfb2bcf208e1747bcef94b8b0fe899cd2cMD51TEXTMARTINS, MERIELEM SALDANHA.pdf.txtMARTINS, MERIELEM SALDANHA.pdf.txtExtracted texttext/plain122645http://repositorio.ufsm.br/bitstream/1/4903/2/MARTINS%2c%20MERIELEM%20SALDANHA.pdf.txt853d95b800517701b1aa67fb88f279edMD52THUMBNAILMARTINS, MERIELEM SALDANHA.pdf.jpgMARTINS, MERIELEM SALDANHA.pdf.jpgIM Thumbnailimage/jpeg4371http://repositorio.ufsm.br/bitstream/1/4903/3/MARTINS%2c%20MERIELEM%20SALDANHA.pdf.jpg4a43bb7fa71bef62c349c46c106a1052MD531/49032022-03-07 10:33:19.558oai:repositorio.ufsm.br:1/4903Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestouvidoria@ufsm.bropendoar:39132022-03-07T13:33:19Repositório Institucional Manancial UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
dc.title.alternative.eng.fl_str_mv |
Embryological development of Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
title |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
spellingShingle |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) Martins, Merielem Saldanha Dyckia Esporogênse Gametogênese Amido Lipídios Dyckia Sporogenesis Gametogenesis Starch Lipids CNPQ::CIENCIAS BIOLOGICAS |
title_short |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
title_full |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
title_fullStr |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
title_full_unstemmed |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
title_sort |
Desenvolvimento embriológico em Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae) |
author |
Martins, Merielem Saldanha |
author_facet |
Martins, Merielem Saldanha |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Oliveira, João Marcelo Santos de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/3533863401498975 |
dc.contributor.referee1.fl_str_mv |
Simão, Daniela Guimarães |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/8597424381029448 |
dc.contributor.referee2.fl_str_mv |
Mastroberti, Alexandra Antunes |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/3971777560277714 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6640957471503995 |
dc.contributor.author.fl_str_mv |
Martins, Merielem Saldanha |
contributor_str_mv |
Oliveira, João Marcelo Santos de Simão, Daniela Guimarães Mastroberti, Alexandra Antunes |
dc.subject.por.fl_str_mv |
Dyckia Esporogênse Gametogênese Amido Lipídios |
topic |
Dyckia Esporogênse Gametogênese Amido Lipídios Dyckia Sporogenesis Gametogenesis Starch Lipids CNPQ::CIENCIAS BIOLOGICAS |
dc.subject.eng.fl_str_mv |
Dyckia Sporogenesis Gametogenesis Starch Lipids |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS BIOLOGICAS |
description |
Bromeliaceae is one of the important neotropical families. It has approximately 3501 species. Pitcairnioideae has about 170 species. The present study aims to analyze and characterize the sporogenesis and gametogenesis in anthers and seminal rudiments of Dyckia polyclada L.B. Sm. (Pitcairnioideae-Bromeliaceae). Dyckia polyclada L.B.Sm. is native and endemic to Rio Grande do Sul and it is found in the central area of the state. The species presents perfect trimerous and heterochlamydous flowers. The androecium consists of six stamens, tetrasporangiate and dorsifixed anthers. Nine different phases of development were defined when it comes to the chemical constituents of the anthers. Only starch was detected in the connective. Starch and reserve lipids were observed in sporangia, microspores and pollen grains. The pollenkitt presents neutral lipids, essential oils and oleoresins in its chemical composition. The ovary in D. polyclada is superior, tricarpellate, trilocular and polispermic. Placentation is axial. The stigma is trífid of the conduplicate spiral. The ovules are anatropous, bitegmic and crassinucellate. The teguments are from dermic origin. The micropyle is formed by the inner tegument. The gametophyte is monosporic of the Polygonum type. The fibrillar aparattus is from pectic nature. Infralocular, labyrinthine and unstructured septal nectaries are present. The chalazal appendix is short and curved toward the raphe and features elongated cells with intracellular spaces. The obturator in D. polyclada has elongated dome-shaped cells and dense, vacuolated cytoplasm, coating the entire placental region. The presented data are unprecedented to the species and contribute to the understanding of the phylogenetic relationships within the family and for better understanding of the functioning of the reproductive process of Dyckia polyclada, given that, for lack of studies, the species is in the category of insufficient data and one cannot diagnose the degree of extinction. |
publishDate |
2016 |
dc.date.accessioned.fl_str_mv |
2016-07-14 |
dc.date.available.fl_str_mv |
2016-07-14 |
dc.date.issued.fl_str_mv |
2016-03-10 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MARTINS, Merielem Saldanha. Embryological development of Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae). 2016. 98 f. Dissertação (Mestrado em Ciências Biológicas) - Universidade Federal de Santa Maria, Santa Maria, 2016. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/4903 |
identifier_str_mv |
MARTINS, Merielem Saldanha. Embryological development of Dyckia polyclada L.B. Sm. (Pitcairnioideae - Bromeliaceae). 2016. 98 f. Dissertação (Mestrado em Ciências Biológicas) - Universidade Federal de Santa Maria, Santa Maria, 2016. |
url |
http://repositorio.ufsm.br/handle/1/4903 |
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por |
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openAccess |
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Universidade Federal de Santa Maria |
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UFSM |
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BR |
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Ciências Biológicas |
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Universidade Federal de Santa Maria |
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