Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://locus.ufv.br/handle/123456789/2515 |
Resumo: | Pteridophyta is a term used to denominate vascular plants lacking seeds that are dispersed by spores, with a life cycle characterized by two distinct phases: a gametophytic and a sporophytic phase. There are approximately12, 240 fern species displaying great diversity in wet tropical regions. In Brazil, 1,200 to 1,300 species are estimated to exist, with at least 50% of this total occurring in the state of Minas Gerais. Morphology and anatomy studies are fundamental to help elucidate the taxonomic problems found in the different groups of vascular plants. Considering the limited information on the anatomy of the monilophytes, an anatomic characterization of the Aspleniaceae and Polypodiaceae species occurring in the Parque Estadual da Serra do Brigadeiro (PESB) was conducted to select the relevant characters for species identification. Fertile botanical material was collected and placed at the VIC Herbarium of the Universidade Federal de Viçosa. Diaphanization and transversal cuts of the median region of the foliar blade and of the proximal, median, and distal regions of the petiole were performed. The material was processed, stained and mounted according to specific methodology. Asplenium species present uniseriate epidermis and predominantly polocytic or anomocytic stomata. Hairs were observed only in A. pseudonitidum. Mesophyll is homogeneous in most of the species studied with braciform or lobed cells. All the species studied presented dycotomic venation, with free extremities. The petiole presents uniseriate epidermis; hairs were observed in A. jucundum, A. pseudonitidum and A. harpeodes and scales in A. oligophyllum and A. feei. The vascular system of the petiole varied significantly among the species studied, presenting varied number of meristeles throughout the extension and xylem with different shapes (“C”, “X”,”V” or hipocamppus-shaped). The Polypodiaceae species present foliar blade with uniseriate epidermis. In Niphidium crassifolium and Microgramma squamulosa , the presence of hypodermis was verified. Trichomes are present in all the species studied, except in M. squamulosa. Polocytic and copolocytic stomata can be verified in Campyloneurum and Serpocaulon, anomocytic stomata in Pecluma, Pleopeltis and M. squamulosa and diacytic stomata in N. crassifolium. The mesophyll is homogeneous in most of the species analyzed, only in Pleopeltis it is dorsiventral. Regarding the venation pattern, Pecluma presents open venation, with reticulated venation in the other genera. The petiole presents uniseriate epidermis with scales in Pleopeltis and C. repens and hair in Pecluma. Regarding the petiole’s vascular system, a variable number of meristeles was verified, with rearrangements occurring as a result of the fusion of the meristeles towards the distal region of the petiole. Among the characters analyzed, type of stomata, type of trichomes, foliar blade and petiole, venation pattern and petiole vascularization can be considered promising characters for the identification of the genera and species of Aspleniaceae and Polypodiaceae occurring in the PESB. |
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Ferrari, Flávia BonizolSilva, Luzimar Campos dahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4799707J8Prado, Jeffersonhttp://lattes.cnpq.br/6751432425532870Azevedo, Aristéa Alveshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787822Y7Meira, Renata Maria Strozi Alveshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706996Y7Otoni, Wagner Camposhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786133Y62015-03-26T13:08:46Z2009-12-222015-03-26T13:08:46Z2009-07-30FERRARI, Flávia Bonizol. Leaf anatomy of Aspleniaceae and Polypodiaceae (Monilophytes) species occurring in the Parque Estadual da Serra do Brigadeiro, MG, Brazil. 2009. 98 f. Dissertação (Mestrado em Botânica estrutural; Ecologia e Sistemática) - Universidade Federal de Viçosa, Viçosa, 2009.http://locus.ufv.br/handle/123456789/2515Pteridophyta is a term used to denominate vascular plants lacking seeds that are dispersed by spores, with a life cycle characterized by two distinct phases: a gametophytic and a sporophytic phase. There are approximately12, 240 fern species displaying great diversity in wet tropical regions. In Brazil, 1,200 to 1,300 species are estimated to exist, with at least 50% of this total occurring in the state of Minas Gerais. Morphology and anatomy studies are fundamental to help elucidate the taxonomic problems found in the different groups of vascular plants. Considering the limited information on the anatomy of the monilophytes, an anatomic characterization of the Aspleniaceae and Polypodiaceae species occurring in the Parque Estadual da Serra do Brigadeiro (PESB) was conducted to select the relevant characters for species identification. Fertile botanical material was collected and placed at the VIC Herbarium of the Universidade Federal de Viçosa. Diaphanization and transversal cuts of the median region of the foliar blade and of the proximal, median, and distal regions of the petiole were performed. The material was processed, stained and mounted according to specific methodology. Asplenium species present uniseriate epidermis and predominantly polocytic or anomocytic stomata. Hairs were observed only in A. pseudonitidum. Mesophyll is homogeneous in most of the species studied with braciform or lobed cells. All the species studied presented dycotomic venation, with free extremities. The petiole presents uniseriate epidermis; hairs were observed in A. jucundum, A. pseudonitidum and A. harpeodes and scales in A. oligophyllum and A. feei. The vascular system of the petiole varied significantly among the species studied, presenting varied number of meristeles throughout the extension and xylem with different shapes (“C”, “X”,”V” or hipocamppus-shaped). The Polypodiaceae species present foliar blade with uniseriate epidermis. In Niphidium crassifolium and Microgramma squamulosa , the presence of hypodermis was verified. Trichomes are present in all the species studied, except in M. squamulosa. Polocytic and copolocytic stomata can be verified in Campyloneurum and Serpocaulon, anomocytic stomata in Pecluma, Pleopeltis and M. squamulosa and diacytic stomata in N. crassifolium. The mesophyll is homogeneous in most of the species analyzed, only in Pleopeltis it is dorsiventral. Regarding the venation pattern, Pecluma presents open venation, with reticulated venation in the other genera. The petiole presents uniseriate epidermis with scales in Pleopeltis and C. repens and hair in Pecluma. Regarding the petiole’s vascular system, a variable number of meristeles was verified, with rearrangements occurring as a result of the fusion of the meristeles towards the distal region of the petiole. Among the characters analyzed, type of stomata, type of trichomes, foliar blade and petiole, venation pattern and petiole vascularization can be considered promising characters for the identification of the genera and species of Aspleniaceae and Polypodiaceae occurring in the PESB.Pteridophyta é um termo usado para denominar plantas vasculares desprovidas de sementes, que se dispersam por esporos e apresentam o ciclo de vida constituído de duas fases distintas, gametofítica e esporofítica. Existem aproximadamente 12.240 espécies de samambaias, com grande diversidade ocorrendo em regiões tropicais úmidas. No Brasil, estima-se a ocorrência de 1.200 a 1.300 espécies e, pelo menos, 50% desse total está representado no Estado de Minas Gerais. Os estudos de morfologia e anatomia são fundamentais para auxiliar na elucidação dos problemas taxonômicos nos diferentes grupos de plantas vasculares. Considerando-se o número reduzido de informações sobre a anatomia das monilófitas, foi realizada a caracterização anatômica de espécies de Aspleniaceae e Polypodiaceae ocorrentes no Parque Estadual da Serra do Brigadeiro (PESB), com o objetivo de selecionar caracteres relevantes na identificação das espécies. O material botânico foi coletado fértil e depositado no Herbário VIC da Universidade Federal de Viçosa. Foram realizadas diafanizações e cortes transversais da região mediana da lâmina foliar e das regiões proximal, mediana e distal do pecíolo. O material foi processado, corado e montado, conforme metodologia específica. As espécies de Asplenium apresentam epiderme uniestratificada e estômatos predominantemente polocíticos ou anomocíticos. Pêlos foram observados apenas em A. pseudonitidum. O mesofilo é homogêneo na maioria das espécies estudadas, com células braciformes ou lobadas. Em todas as espécies estudadas a venação é dicotômica, com extremidades livres. O pecíolo apresenta epiderme uniestratificada; pêlos foram observados em A. jucundum, A. pseudonitidum e A. harpeodes e escamas em A. oligophyllum e A. feei. O sistema vascular do pecíolo variou significativamente dentre as espécies estudadas, apresentando número variável de meristelos ao longo de toda extensão e xilema com diferentes conformações, em forma de “C”, “X”,”V” ou em forma de “cavalo-marinho”. As espécies de Polypodiaceae apresentam lâmina foliar com epiderme uniestratificada. Em Niphidium crassifolium e Microgramma squamulosa foi verificada a presença de hipoderme. Tricomas estão presentes em todas as espécies estudadas, exceto em M. squamulosa. Estômatos polocíticos e copolocíticos podem ser verificados em Campyloneurum e Serpocaulon, estômatos anomocíticos em Pecluma, Pleopeltis e M. squamulosa e estômatos diacíticos em N. crassifolium. O mesofilo é homogêneo na maioria das espécies analisadas, apenas em Pleopeltis é dorsiventral. Em relação ao padrão de venação, Pecluma apresenta venação aberta, nos demais gêneros a venação é do tipo reticulada. O pecíolo apresenta epiderme uniestratificada, com escamas em Pleopeltis e C. repens e pêlos em Pecluma. Em relação ao sistema vascular do pecíolo, verificou-se um número variável de meristelos, ocorrendo rearranjos, com a união dos meristelos em direção à região distal do pecíolo. Dentre os caracteres analisados, o tipo de estômato, os tipos de tricomas, da lâmina foliar e do pecíolo, o padrão de venação e a vascularização do pecíolo podem ser considerados caracteres promissores na identificação de gêneros e espécies de Aspleniaceae e Polypodiaceae ocorrentes no PESB.application/pdfporUniversidade Federal de ViçosaMestrado em BotânicaUFVBRBotânica estrutural; Ecologia e SistemáticaAspleniaceaePolypodiaceaeAnatomia vegetalAspleniaceaePolypodiaceaePlant anatomyCNPQ::CIENCIAS BIOLOGICAS::BOTANICAAnatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, BrasilLeaf anatomy of Aspleniaceae and Polypodiaceae (Monilophytes) species occurring in the Parque Estadual da Serra do Brigadeiro, MG, Brazilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf4744414https://locus.ufv.br//bitstream/123456789/2515/1/texto%20completo.pdf3463849dd59c12a4df1585a9df9f44a2MD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain162645https://locus.ufv.br//bitstream/123456789/2515/2/texto%20completo.pdf.txt1f5ba02bba8098d9bc547ba68312be7cMD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3494https://locus.ufv.br//bitstream/123456789/2515/3/texto%20completo.pdf.jpg04a1a72763a5a3b787c10a152434d44fMD53123456789/25152016-04-08 23:08:07.426oai:locus.ufv.br:123456789/2515Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-09T02:08:07LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.por.fl_str_mv |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil |
dc.title.alternative.eng.fl_str_mv |
Leaf anatomy of Aspleniaceae and Polypodiaceae (Monilophytes) species occurring in the Parque Estadual da Serra do Brigadeiro, MG, Brazil |
title |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil |
spellingShingle |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil Ferrari, Flávia Bonizol Aspleniaceae Polypodiaceae Anatomia vegetal Aspleniaceae Polypodiaceae Plant anatomy CNPQ::CIENCIAS BIOLOGICAS::BOTANICA |
title_short |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil |
title_full |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil |
title_fullStr |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil |
title_full_unstemmed |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil |
title_sort |
Anatomia foliar de espécies de Aspleniaceae e Polypodiaceae (Monilófitas) ocorrentes no Parque Estadual da Serra do Brigadeiro, MG, Brasil |
author |
Ferrari, Flávia Bonizol |
author_facet |
Ferrari, Flávia Bonizol |
author_role |
author |
dc.contributor.author.fl_str_mv |
Ferrari, Flávia Bonizol |
dc.contributor.advisor-co1.fl_str_mv |
Silva, Luzimar Campos da |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4799707J8 |
dc.contributor.advisor-co2.fl_str_mv |
Prado, Jefferson |
dc.contributor.advisor-co2Lattes.fl_str_mv |
http://lattes.cnpq.br/6751432425532870 |
dc.contributor.advisor1.fl_str_mv |
Azevedo, Aristéa Alves |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787822Y7 |
dc.contributor.referee1.fl_str_mv |
Meira, Renata Maria Strozi Alves |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706996Y7 |
dc.contributor.referee2.fl_str_mv |
Otoni, Wagner Campos |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4786133Y6 |
contributor_str_mv |
Silva, Luzimar Campos da Prado, Jefferson Azevedo, Aristéa Alves Meira, Renata Maria Strozi Alves Otoni, Wagner Campos |
dc.subject.por.fl_str_mv |
Aspleniaceae Polypodiaceae Anatomia vegetal |
topic |
Aspleniaceae Polypodiaceae Anatomia vegetal Aspleniaceae Polypodiaceae Plant anatomy CNPQ::CIENCIAS BIOLOGICAS::BOTANICA |
dc.subject.eng.fl_str_mv |
Aspleniaceae Polypodiaceae Plant anatomy |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS BIOLOGICAS::BOTANICA |
description |
Pteridophyta is a term used to denominate vascular plants lacking seeds that are dispersed by spores, with a life cycle characterized by two distinct phases: a gametophytic and a sporophytic phase. There are approximately12, 240 fern species displaying great diversity in wet tropical regions. In Brazil, 1,200 to 1,300 species are estimated to exist, with at least 50% of this total occurring in the state of Minas Gerais. Morphology and anatomy studies are fundamental to help elucidate the taxonomic problems found in the different groups of vascular plants. Considering the limited information on the anatomy of the monilophytes, an anatomic characterization of the Aspleniaceae and Polypodiaceae species occurring in the Parque Estadual da Serra do Brigadeiro (PESB) was conducted to select the relevant characters for species identification. Fertile botanical material was collected and placed at the VIC Herbarium of the Universidade Federal de Viçosa. Diaphanization and transversal cuts of the median region of the foliar blade and of the proximal, median, and distal regions of the petiole were performed. The material was processed, stained and mounted according to specific methodology. Asplenium species present uniseriate epidermis and predominantly polocytic or anomocytic stomata. Hairs were observed only in A. pseudonitidum. Mesophyll is homogeneous in most of the species studied with braciform or lobed cells. All the species studied presented dycotomic venation, with free extremities. The petiole presents uniseriate epidermis; hairs were observed in A. jucundum, A. pseudonitidum and A. harpeodes and scales in A. oligophyllum and A. feei. The vascular system of the petiole varied significantly among the species studied, presenting varied number of meristeles throughout the extension and xylem with different shapes (“C”, “X”,”V” or hipocamppus-shaped). The Polypodiaceae species present foliar blade with uniseriate epidermis. In Niphidium crassifolium and Microgramma squamulosa , the presence of hypodermis was verified. Trichomes are present in all the species studied, except in M. squamulosa. Polocytic and copolocytic stomata can be verified in Campyloneurum and Serpocaulon, anomocytic stomata in Pecluma, Pleopeltis and M. squamulosa and diacytic stomata in N. crassifolium. The mesophyll is homogeneous in most of the species analyzed, only in Pleopeltis it is dorsiventral. Regarding the venation pattern, Pecluma presents open venation, with reticulated venation in the other genera. The petiole presents uniseriate epidermis with scales in Pleopeltis and C. repens and hair in Pecluma. Regarding the petiole’s vascular system, a variable number of meristeles was verified, with rearrangements occurring as a result of the fusion of the meristeles towards the distal region of the petiole. Among the characters analyzed, type of stomata, type of trichomes, foliar blade and petiole, venation pattern and petiole vascularization can be considered promising characters for the identification of the genera and species of Aspleniaceae and Polypodiaceae occurring in the PESB. |
publishDate |
2009 |
dc.date.available.fl_str_mv |
2009-12-22 2015-03-26T13:08:46Z |
dc.date.issued.fl_str_mv |
2009-07-30 |
dc.date.accessioned.fl_str_mv |
2015-03-26T13:08:46Z |
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 |
FERRARI, Flávia Bonizol. Leaf anatomy of Aspleniaceae and Polypodiaceae (Monilophytes) species occurring in the Parque Estadual da Serra do Brigadeiro, MG, Brazil. 2009. 98 f. Dissertação (Mestrado em Botânica estrutural; Ecologia e Sistemática) - Universidade Federal de Viçosa, Viçosa, 2009. |
dc.identifier.uri.fl_str_mv |
http://locus.ufv.br/handle/123456789/2515 |
identifier_str_mv |
FERRARI, Flávia Bonizol. Leaf anatomy of Aspleniaceae and Polypodiaceae (Monilophytes) species occurring in the Parque Estadual da Serra do Brigadeiro, MG, Brazil. 2009. 98 f. Dissertação (Mestrado em Botânica estrutural; Ecologia e Sistemática) - Universidade Federal de Viçosa, Viçosa, 2009. |
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http://locus.ufv.br/handle/123456789/2515 |
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Universidade Federal de Viçosa |
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Mestrado em Botânica |
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UFV |
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BR |
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Botânica estrutural; Ecologia e Sistemática |
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Universidade Federal de Viçosa |
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