Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/22125 |
Resumo: | Luehea divaricata Mart. & Zucc. is a native forest species of the Atlantic Forest, popularly known as açoita-cavalo and member of the Malvaceae family. The natural populations of Luehea divaricata and many other native species have been drastically reduced due to intense exploration of the Atlantic Forest, making it increasingly difficult to find suitable specimens for commercial and ecological use. By the way, many difficulties are found to obtain viable seeds, with appropriate physiological and sanitary characteristics, making it difficult to produce seedlings by sexual via. For this reason, is extremely important to evaluate the quality of seed lots, and seeing the difficulties in reproducing the species via seminal, micropropagation and minicutting may be alternatives to overcome the difficulties in its multiplication. The present work aimed to evaluate methodologies related to the vegetative propagation of Luehea divaricata, in order to simultaneously support the production of seedlings and the conservation of genetic resources of this native Brazilian forest species. With regard to seed quality, the results corroborate their orthodox physiological behavior in storage, and indicate that it is possible to maintain their viability even after long periods of storage in the refrigerator, in the specific case, for four years. For micropropagation, 10 or 20 μM IBA are efficient to root shoots at 60 days of in vitro cultivation. In the experiment related to minimal growth and subsequent growth resumption, 10 g L-1 sorbitol is efficient for in vitro conservation, which can be performed for up to 120 days. However, the subsequent resumption of shoot growth is limited to a 90 days storage period in the presence of sorbitol. In the minicutting, at 30 days of cultivation, 1000 mg L-1 of IBA in “pulse” treatment produces satisfactory results regarding the formation and number of roots, saving time and costs. The productivity of the miniceps is higher in summer, when the seedlings develop and root better, but can be collected in other seasons, indicating that the minicutting process can continue throughout the year, under the conditions evaluated. Genetic variability is greater within (77%) of the three natural fragments, which is expected to occur in species that reproduce predominantly by crosses. The results obtained are fundamental for the proper choice of management strategies and genetic conservation of these forest resources. |
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2021-09-01T12:57:54Z2021-09-01T12:57:54Z2020-02-21http://repositorio.ufsm.br/handle/1/22125Luehea divaricata Mart. & Zucc. is a native forest species of the Atlantic Forest, popularly known as açoita-cavalo and member of the Malvaceae family. The natural populations of Luehea divaricata and many other native species have been drastically reduced due to intense exploration of the Atlantic Forest, making it increasingly difficult to find suitable specimens for commercial and ecological use. By the way, many difficulties are found to obtain viable seeds, with appropriate physiological and sanitary characteristics, making it difficult to produce seedlings by sexual via. For this reason, is extremely important to evaluate the quality of seed lots, and seeing the difficulties in reproducing the species via seminal, micropropagation and minicutting may be alternatives to overcome the difficulties in its multiplication. The present work aimed to evaluate methodologies related to the vegetative propagation of Luehea divaricata, in order to simultaneously support the production of seedlings and the conservation of genetic resources of this native Brazilian forest species. With regard to seed quality, the results corroborate their orthodox physiological behavior in storage, and indicate that it is possible to maintain their viability even after long periods of storage in the refrigerator, in the specific case, for four years. For micropropagation, 10 or 20 μM IBA are efficient to root shoots at 60 days of in vitro cultivation. In the experiment related to minimal growth and subsequent growth resumption, 10 g L-1 sorbitol is efficient for in vitro conservation, which can be performed for up to 120 days. However, the subsequent resumption of shoot growth is limited to a 90 days storage period in the presence of sorbitol. In the minicutting, at 30 days of cultivation, 1000 mg L-1 of IBA in “pulse” treatment produces satisfactory results regarding the formation and number of roots, saving time and costs. The productivity of the miniceps is higher in summer, when the seedlings develop and root better, but can be collected in other seasons, indicating that the minicutting process can continue throughout the year, under the conditions evaluated. Genetic variability is greater within (77%) of the three natural fragments, which is expected to occur in species that reproduce predominantly by crosses. The results obtained are fundamental for the proper choice of management strategies and genetic conservation of these forest resources.Luehea divaricata Mart. & Zucc. é uma espécie florestal nativa da Mata Atlântica, conhecida popularmente como açoita-cavalo e integrante da família Malvaceae. As populações naturais de Luehea divaricata e de tantas outras espécies nativas foram reduzidas drasticamente devido a intensa exploração da Mata Atlântica, dificultando cada vez mais a busca por exemplares adequados ao uso comercial e ecológico. Frente a isso, são encontradas muitas dificuldades para a obtenção de sementes viáveis, com boas características fisiológicas e sanitárias, dificultando a produção de mudas por meio de sementes. Por esse motivo, é de extrema importância avaliar a qualidade de lotes de sementes, e frente às dificuldades na reprodução da espécie via seminal, a micropropagação e a miniestaquia podem constituir alternativas para superar as dificuldades na sua propagação. Frente ao exposto, o presente trabalho teve como objetivo avaliar metodologias relacionadas à propagação vegetativa de Luehea divaricata, de maneira a subsidiar, simultaneamente, a produção de mudas e a conservação de recursos genéticos dessa espécie florestal nativa brasileira. No que diz respeito à qualidade das sementes, os resultados corroboram seu comportamento fisiológico ortodoxo no armazenamento e indicam que é possível manter sua viabilidade mesmo após longos períodos de conservação em refrigerador, no caso específico, por quatro anos. Em relação à micropropagação,10 ou 20 μM de AIB são eficientes em formar raízes em brotações aos 60 dias de cultivo in vitro. No experimento relacionado ao crescimento mínimo e subsequente retomada do crescimento, 10 g L-1 de sorbitol é eficiente para realizar a conservação in vitro, que pode ser realizada por um período de até 120 dias. Contudo, a subsequente retomada de crescimento das brotações é limitada a um período de 90 dias de conservação na presença de sorbitol. Na miniestaquia, aos 30 dias de cultivo, 1000 mg L-1 de AIB em tratamento “pulse” já produz resultados satisfatórios no que diz respeito à formação e ao número de raízes, propiciando economia de tempo e custos. A produtividade das minicepas é superior no verão, quando as mudas se desenvolvem e enraízam melhor, porém, podem ser efetuadas coletas nas demais estações, indicando que o processo de miniestaquia pode ter continuidade ao longo do ano, nas condições avaliadas. A variabilidade genética é maior dentro (77%) dos três fragmentos naturais, o que é esperado ocorrer em espécies que se reproduzem predominantemente por cruzamentos. Os resultados obtidos são fundamentais para a adequada escolha de estratégias de manejo e conservação genética desses recursos florestais.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de Ciências RuraisPrograma de Pós-Graduação em Engenharia FlorestalUFSMBrasilRecursos Florestais e Engenharia FlorestalAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessSementes florestaisMicropropagaçãoMiniestaquiaConservação de germoplasmaVariabilidade genéticaForest seedsMicropropagation.MinicuttingGermoplasm conservationGenetic variabilityCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALPropagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélitesPropagation of Luehea divaricata Mart. & Zucc. and analysis of the genetic structure of natural fragments with microssatellite markersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisReiniger, Lia Rejane Silveirahttp://lattes.cnpq.br/5739294882585391Paim, Aline FerreiraCurti, Aline RitterManfio, Candida ElisaGolle, Diego Pascoalhttp://lattes.cnpq.br/3731733749654350Silva, Karol Buuron da500200000003600600600600600600600809860fd-9f1f-4d0e-81fb-36d7e9781d1cc5f4da9c-516d-4e86-bc24-78d9b605a571df2a3c09-adf3-4326-ba66-7c8905cd6aac212a6f8d-1d8c-4ee1-af28-29fe2385f7d09fbd6f84-2242-4677-ae12-41a5ed167b2a9532f06b-366a-46cd-9752-9cd74a9a9225reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGEF_2020_SILVA_KAROL.pdfTES_PPGEF_2020_SILVA_KAROL.pdfTeseapplication/pdf3068255http://repositorio.ufsm.br/bitstream/1/22125/1/TES_PPGEF_2020_SILVA_KAROL.pdf9e54fcc571203ac038fa2ac4a7fc3494MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites |
dc.title.alternative.eng.fl_str_mv |
Propagation of Luehea divaricata Mart. & Zucc. and analysis of the genetic structure of natural fragments with microssatellite markers |
title |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites |
spellingShingle |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites Silva, Karol Buuron da Sementes florestais Micropropagação Miniestaquia Conservação de germoplasma Variabilidade genética Forest seeds Micropropagation. Minicutting Germoplasm conservation Genetic variability CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
title_short |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites |
title_full |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites |
title_fullStr |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites |
title_full_unstemmed |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites |
title_sort |
Propagação de Luehea divaricata Mart. & Zucc. e análise da estrutura genética de fragmentos naturais com marcadores microssatélites |
author |
Silva, Karol Buuron da |
author_facet |
Silva, Karol Buuron da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Reiniger, Lia Rejane Silveira |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/5739294882585391 |
dc.contributor.referee1.fl_str_mv |
Paim, Aline Ferreira |
dc.contributor.referee2.fl_str_mv |
Curti, Aline Ritter |
dc.contributor.referee3.fl_str_mv |
Manfio, Candida Elisa |
dc.contributor.referee4.fl_str_mv |
Golle, Diego Pascoal |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3731733749654350 |
dc.contributor.author.fl_str_mv |
Silva, Karol Buuron da |
contributor_str_mv |
Reiniger, Lia Rejane Silveira Paim, Aline Ferreira Curti, Aline Ritter Manfio, Candida Elisa Golle, Diego Pascoal |
dc.subject.por.fl_str_mv |
Sementes florestais Micropropagação Miniestaquia Conservação de germoplasma Variabilidade genética |
topic |
Sementes florestais Micropropagação Miniestaquia Conservação de germoplasma Variabilidade genética Forest seeds Micropropagation. Minicutting Germoplasm conservation Genetic variability CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
dc.subject.eng.fl_str_mv |
Forest seeds Micropropagation. Minicutting Germoplasm conservation Genetic variability |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
description |
Luehea divaricata Mart. & Zucc. is a native forest species of the Atlantic Forest, popularly known as açoita-cavalo and member of the Malvaceae family. The natural populations of Luehea divaricata and many other native species have been drastically reduced due to intense exploration of the Atlantic Forest, making it increasingly difficult to find suitable specimens for commercial and ecological use. By the way, many difficulties are found to obtain viable seeds, with appropriate physiological and sanitary characteristics, making it difficult to produce seedlings by sexual via. For this reason, is extremely important to evaluate the quality of seed lots, and seeing the difficulties in reproducing the species via seminal, micropropagation and minicutting may be alternatives to overcome the difficulties in its multiplication. The present work aimed to evaluate methodologies related to the vegetative propagation of Luehea divaricata, in order to simultaneously support the production of seedlings and the conservation of genetic resources of this native Brazilian forest species. With regard to seed quality, the results corroborate their orthodox physiological behavior in storage, and indicate that it is possible to maintain their viability even after long periods of storage in the refrigerator, in the specific case, for four years. For micropropagation, 10 or 20 μM IBA are efficient to root shoots at 60 days of in vitro cultivation. In the experiment related to minimal growth and subsequent growth resumption, 10 g L-1 sorbitol is efficient for in vitro conservation, which can be performed for up to 120 days. However, the subsequent resumption of shoot growth is limited to a 90 days storage period in the presence of sorbitol. In the minicutting, at 30 days of cultivation, 1000 mg L-1 of IBA in “pulse” treatment produces satisfactory results regarding the formation and number of roots, saving time and costs. The productivity of the miniceps is higher in summer, when the seedlings develop and root better, but can be collected in other seasons, indicating that the minicutting process can continue throughout the year, under the conditions evaluated. Genetic variability is greater within (77%) of the three natural fragments, which is expected to occur in species that reproduce predominantly by crosses. The results obtained are fundamental for the proper choice of management strategies and genetic conservation of these forest resources. |
publishDate |
2020 |
dc.date.issued.fl_str_mv |
2020-02-21 |
dc.date.accessioned.fl_str_mv |
2021-09-01T12:57:54Z |
dc.date.available.fl_str_mv |
2021-09-01T12:57:54Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/22125 |
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http://repositorio.ufsm.br/handle/1/22125 |
dc.language.iso.fl_str_mv |
por |
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por |
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500200000003 |
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600 600 600 600 600 600 600 |
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dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Florestal |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Recursos Florestais e Engenharia Florestal |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Rurais |
dc.source.none.fl_str_mv |
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