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Cultivo in vitro de orquídeas do grupo Cattleya, em diferentes meios de cultura e irradiâncias

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dc.creator Ventura, Gizella Machado
dc.date.accessioned 2015-03-26T12:43:20Z
dc.date.available 2008-04-02
dc.date.available 2015-03-26T12:43:20Z
dc.date.issued 2007-07-05
dc.identifier.citation VENTURA, Gizella Machado. Orchids cultivation in vitro of the Cattleya group, in different means of culture and light irradiations. 2007. 122 f. Tese (Doutorado em Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de) - Universidade Federal de Viçosa, Viçosa, 2007. por
dc.identifier.uri http://locus.ufv.br/handle/123456789/1084
dc.description.abstract The propagation in vitro of orchids requires specific conditions to be cultivated. This work aimed to evaluate the effects of the methods of cultivation in the process of germination and growth of the species of the Cattleya group, and establish better levels of irradiation for the growth of vitroplants. We evaluated the effects of adding doses (0,0; 1,0; 2,0; 3,0 e 4,0 g L-1) of activated charcoal and of commercial brands in the means of culture GB5, MN, and Peter s. In the second step we evaluated four formulations in the means of culture (Peter s; MS; GB5; and B&G), with 0,0 and 2,0 g L-1 activated charcoal. Finally we studied the effects of the light irradiation (12; 25; 50; 100; and 150 µmol m-2 s-1). The seeds germination of the Laelia purpurata var. carnea, Cattleya amethystoglossa e Laelia anceps var. semia-alba occurred in less time (≈ 30 days) and in higher percentage level (80%) in means of culture without the addition of activated charcoal. In the same conditions, there were more green protocorms also, but the addition of activated charcoal increased the growth of the protocorms with roots. Simpler formulations, for example, the commercial fertilizer Peter s or B&G orchidée can substitute more complex means of culture as MS (1962) and GB5 (1968). Vitroplants of the Cattleya guttata Leopoldi x Lc. Guadalajara cultivated under light irradiation of the 65 µmol m-2 s-1 resulted in a better vegetative growth. In higher levels of irradiation, photo inhibitor effects were observed, but it was reversible in lower frequency, showing the plasticity of the hybrid studied. pt_BR
dc.description.abstract The propagation in vitro of orchids requires specific conditions to be cultivated. This work aimed to evaluate the effects of the methods of cultivation in the process of germination and growth of the species of the Cattleya group, and establish better levels of irradiation for the growth of vitroplants. We evaluated the effects of adding doses (0,0; 1,0; 2,0; 3,0 e 4,0 g L-1) of activated charcoal and of commercial brands in the means of culture GB5, MN, and Peter s. In the second step we evaluated four formulations in the means of culture (Peter s; MS; GB5; and B&G), with 0,0 and 2,0 g L-1 activated charcoal. Finally we studied the effects of the light irradiation (12; 25; 50; 100; and 150 µmol m-2 s-1). The seeds germination of the Laelia purpurata var. carnea, Cattleya amethystoglossa e Laelia anceps var. semia-alba occurred in less time (≈ 30 days) and in higher percentage level (80%) in means of culture without the addition of activated charcoal. In the same conditions, there were more green protocorms also, but the addition of activated charcoal increased the growth of the protocorms with roots. Simpler formulations, for example, the commercial fertilizer Peter s or B&G orchidée can substitute more complex means of culture as MS (1962) and GB5 (1968). Vitroplants of the Cattleya guttata Leopoldi x Lc. Guadalajara cultivated under light irradiation of the 65 µmol m-2 s-1 resulted in a better vegetative growth. In higher levels of irradiation, photo inhibitor effects were observed, but it was reversible in lower frequency, showing the plasticity of the hybrid studied. eng
dc.description.sponsorship Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.format application/pdf por
dc.language por por
dc.publisher Universidade Federal de Viçosa por
dc.rights Acesso Aberto por
dc.subject Cultura de tecidos por
dc.subject Germinação por
dc.subject Protocormos por
dc.subject Plant tissue culture eng
dc.subject Germination eng
dc.title Cultivo in vitro de orquídeas do grupo Cattleya, em diferentes meios de cultura e irradiâncias por
dc.title.alternative Orchids cultivation in vitro of the Cattleya group, in different means of culture and light irradiations eng
dc.type Tese por
dc.contributor.advisor-co1 Novais, Roberto Ferreira de
dc.contributor.advisor-co1Lattes http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783732H4 por
dc.contributor.advisor-co2 Cecon, Paulo Roberto
dc.contributor.advisor-co2Lattes http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4788114T5 por
dc.publisher.country BR por
dc.publisher.department Plantas daninhas, Alelopatia, Herbicidas e Resíduos; Fisiologia de culturas; Manejo pós-colheita de por
dc.publisher.program Doutorado em Fitotecnia por
dc.publisher.initials UFV por
dc.subject.cnpq CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::FITOTECNIA por
dc.creator.lattes http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767872J0 por
dc.contributor.advisor1 Dias, José Maria Moreira
dc.contributor.advisor1Lattes http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783068Z8 por
dc.contributor.referee1 Venegas, Victor Hugo Alvarez
dc.contributor.referee1Lattes http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4727865T0 por
dc.contributor.referee2 Faria, Ricardo Tadeu de
dc.contributor.referee2Lattes http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4784021E1 por
dc.contributor.referee3 Alexandre, Rodrigo Sobreira
dc.contributor.referee3Lattes http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4794547D6 por


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  • Fitotecnia [884]
    Teses e dissertações defendidas no Programa de Pós-Graduação em Fitotecnia

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