Qualidade fisiológica e sanitária de sementes de cedro e patogenicidade de Rhizoctonia spp.

Detalhes bibliográficos
Autor(a) principal: Lazarotto, Marília
Data de Publicação: 2010
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Manancial - Repositório Digital da UFSM
dARK ID: ark:/26339/0013000009d1q
Texto Completo: http://repositorio.ufsm.br/handle/1/8666
Resumo: 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.
id UFSM_2b0d894a7f7a52ac4f571bbe6a727524
oai_identifier_str oai:repositorio.ufsm.br:1/8666
network_acronym_str UFSM
network_name_str Manancial - Repositório Digital da UFSM
repository_id_str
spelling 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
_version_ 1814439758009466880