Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp.
Main Author: | |
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Publication Date: | 2010 |
Format: | Master thesis |
Language: | por |
Source: | Manancial - Repositório Digital da UFSM |
dARK ID: | ark:/26339/0013000009d1q |
Download full: | http://repositorio.ufsm.br/handle/1/8666 |
Summary: | The native forest specie Cedrela fissilis Vell. had its population reduced because of the extraction of its wood. The worry of its extinction has been favoring researches related with the specie perpetuation, including those which involve seeds quality. However, there is little knowledge about the pathogens which could contribute to the low germination or other problems in adult individuals. This research has the objective to evaluate the physiological and sanitary quality of C. fissilis seeds, from different places of the south of Brazil. The vigor was evaluated with different tests, the sanitary with two methods of detection and transmission of fungi by seeds, pathogenicity of fungi isolated from the seeds and seeds treatment. The vigor tests showed that the seeds from different places had different physiological potentials. Both of detection methods were efficient to identify the most of the fungi found in the seeds. Some of the fungi were identified on high incidences and in both tests: Penicillium sp., Pestalotia sp., Phomopsis sp. and Rhizoctonia sp. This last one and Fusarium sp. were transmitted by seeds. One of the Rhizoctonia sp. isolates was pathogenic, causing roots rotting, and damping-off. The seeds treatment with garlic extract (Allium sativum) and physical treatment (70°C for 48 hours) could be use to reduce the fungi incidence or to eliminate these, respectively. For the treatment of inoculated and noninoculated seeds with Rhizoctonia sp., the combination of biological (Thichoderma spp.) and chemic treatments was efficient to reduce the incidence of most of fungi, including that which was inoculated in the seeds. |
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Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp.Physiological and sanitary quality of Cedrela fissilis seeds and pathogenicity of Rhizoctonia spp.Sementes florestaisPatogenicidadeRhizoctonia spp., tratamentosForest seedsPathogenicityRhizoctonia spp.TreatmentsCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTALThe native forest specie Cedrela fissilis Vell. had its population reduced because of the extraction of its wood. The worry of its extinction has been favoring researches related with the specie perpetuation, including those which involve seeds quality. However, there is little knowledge about the pathogens which could contribute to the low germination or other problems in adult individuals. This research has the objective to evaluate the physiological and sanitary quality of C. fissilis seeds, from different places of the south of Brazil. The vigor was evaluated with different tests, the sanitary with two methods of detection and transmission of fungi by seeds, pathogenicity of fungi isolated from the seeds and seeds treatment. The vigor tests showed that the seeds from different places had different physiological potentials. Both of detection methods were efficient to identify the most of the fungi found in the seeds. Some of the fungi were identified on high incidences and in both tests: Penicillium sp., Pestalotia sp., Phomopsis sp. and Rhizoctonia sp. This last one and Fusarium sp. were transmitted by seeds. One of the Rhizoctonia sp. isolates was pathogenic, causing roots rotting, and damping-off. The seeds treatment with garlic extract (Allium sativum) and physical treatment (70°C for 48 hours) could be use to reduce the fungi incidence or to eliminate these, respectively. For the treatment of inoculated and noninoculated seeds with Rhizoctonia sp., the combination of biological (Thichoderma spp.) and chemic treatments was efficient to reduce the incidence of most of fungi, including that which was inoculated in the seeds.Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorO cedro (Cedrela fissilis) é uma espécie florestal nativa, cuja população foi reduzida em função da extração de sua madeira. A preocupação com sua extinção vêm favorecendo pesquisas relacionadas à perpetuação da espécie, dentre estas, aquelas envolvendo a qualidade de suas sementes. Porém, pouco se sabe sobre patógenos que podem estar contribuindo para a baixa germinação de sementes, ou para problemas futuros em indivíduos já estabelecidos. Diante disto, este trabalho tem como objetivo geral avaliar a qualidade fisiológica e sanitária de sementes de cedro, procedentes de diferentes localidades dos estados do sul do Brasil. Avaliou-se o vigor destas sementes, através de diferentes testes; a qualidade sanitária, por dois métodos de detecção e teste de transmissão; a patogenicidade de fungos isolados de sementes; e o efeito de diferentes tratamentos. Os testes de vigor demonstraram que as sementes possuíam diferentes potenciais fisiológicos, dependendo da procedência. Ambos os testes de detecção utilizados, foram eficientes para a maioria dos fungos associados às sementes de cedro. Alguns fungos ocorreram em altas incidências, em ambos os testes: Penicillium sp., Pestalotia sp., Phomopsis sp. e Rhizoctonia sp., sendo este e Fusarium sp., os únicos transmitidos via sementes. A patogenicidade, realizada com isolados de Rhizoctonia sp. identificou um isolado patogênico, provocando apodrecimento de raízes e colo, e posterior tombamento. Os tratamentos de sementes com extrato de alho (Allium sativum) e tratamento físico (estufa a 70°C por 48 horas) são promissores para a redução da incidência de fungos ou mesmo erradicação de alguns deles, respectivamente. Tratamentos com sementes inoculadas e não-inoculadas com Rhizoctonia sp. demonstraram que a combinação de produto biológico, à base de Trichoderma spp. (Agrotrich Plus®), mais um fungicida protetor (Captan) é eficiente para redução de patógenos, incluindo àquele inoculado nas sementes.Universidade Federal de Santa MariaBRRecursos Florestais e Engenharia FlorestalUFSMPrograma de Pós-Graduação em Engenharia FlorestalMuniz, Marlove Fatima Briãohttp://lattes.cnpq.br/3148312031889388Kulczynski, Stela Marishttp://lattes.cnpq.br/0604511258822899Santos, Álvaro Figueredo doshttp://lattes.cnpq.br/1181199965618168Lazarotto, Marília2013-10-242013-10-242010-02-24info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfLAZAROTTO, Marília. Physiological and sanitary quality of Cedrela fissilis seeds and pathogenicity of Rhizoctonia spp.. 2010. 90 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2010.http://repositorio.ufsm.br/handle/1/8666ark:/26339/0013000009d1qporinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2022-07-12T13:41:34Zoai:repositorio.ufsm.br:1/8666Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2024-07-29T10:31:02.296291Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. Physiological and sanitary quality of Cedrela fissilis seeds and pathogenicity of Rhizoctonia spp. |
title |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. |
spellingShingle |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. Lazarotto, Marília Sementes florestais Patogenicidade Rhizoctonia spp., tratamentos Forest seeds Pathogenicity Rhizoctonia spp. Treatments CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
title_short |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. |
title_full |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. |
title_fullStr |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. |
title_full_unstemmed |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. |
title_sort |
Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp. |
author |
Lazarotto, Marília |
author_facet |
Lazarotto, Marília |
author_role |
author |
dc.contributor.none.fl_str_mv |
Muniz, Marlove Fatima Brião http://lattes.cnpq.br/3148312031889388 Kulczynski, Stela Maris http://lattes.cnpq.br/0604511258822899 Santos, Álvaro Figueredo dos http://lattes.cnpq.br/1181199965618168 |
dc.contributor.author.fl_str_mv |
Lazarotto, Marília |
dc.subject.por.fl_str_mv |
Sementes florestais Patogenicidade Rhizoctonia spp., tratamentos Forest seeds Pathogenicity Rhizoctonia spp. Treatments CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
topic |
Sementes florestais Patogenicidade Rhizoctonia spp., tratamentos Forest seeds Pathogenicity Rhizoctonia spp. Treatments CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL |
description |
The native forest specie Cedrela fissilis Vell. had its population reduced because of the extraction of its wood. The worry of its extinction has been favoring researches related with the specie perpetuation, including those which involve seeds quality. However, there is little knowledge about the pathogens which could contribute to the low germination or other problems in adult individuals. This research has the objective to evaluate the physiological and sanitary quality of C. fissilis seeds, from different places of the south of Brazil. The vigor was evaluated with different tests, the sanitary with two methods of detection and transmission of fungi by seeds, pathogenicity of fungi isolated from the seeds and seeds treatment. The vigor tests showed that the seeds from different places had different physiological potentials. Both of detection methods were efficient to identify the most of the fungi found in the seeds. Some of the fungi were identified on high incidences and in both tests: Penicillium sp., Pestalotia sp., Phomopsis sp. and Rhizoctonia sp. This last one and Fusarium sp. were transmitted by seeds. One of the Rhizoctonia sp. isolates was pathogenic, causing roots rotting, and damping-off. The seeds treatment with garlic extract (Allium sativum) and physical treatment (70°C for 48 hours) could be use to reduce the fungi incidence or to eliminate these, respectively. For the treatment of inoculated and noninoculated seeds with Rhizoctonia sp., the combination of biological (Thichoderma spp.) and chemic treatments was efficient to reduce the incidence of most of fungi, including that which was inoculated in the seeds. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-02-24 2013-10-24 2013-10-24 |
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.uri.fl_str_mv |
LAZAROTTO, Marília. Physiological and sanitary quality of Cedrela fissilis seeds and pathogenicity of Rhizoctonia spp.. 2010. 90 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2010. http://repositorio.ufsm.br/handle/1/8666 |
dc.identifier.dark.fl_str_mv |
ark:/26339/0013000009d1q |
identifier_str_mv |
LAZAROTTO, Marília. Physiological and sanitary quality of Cedrela fissilis seeds and pathogenicity of Rhizoctonia spp.. 2010. 90 f. Dissertação (Mestrado em Recursos Florestais e Engenharia Florestal) - Universidade Federal de Santa Maria, Santa Maria, 2010. ark:/26339/0013000009d1q |
url |
http://repositorio.ufsm.br/handle/1/8666 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Recursos Florestais e Engenharia Florestal UFSM Programa de Pós-Graduação em Engenharia Florestal |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Recursos Florestais e Engenharia Florestal UFSM Programa de Pós-Graduação em Engenharia Florestal |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
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1814439758009466880 |