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dc.contributor.authorGOMES, H. de A.
dc.contributor.authorYANNICK NOUAILHETAS
dc.contributor.authorSILVA, N. C. da
dc.contributor.authorARNALDO MEZRAHI
dc.contributor.authorCARLOS E. BONACOSSA de ALMEIDA
dc.contributor.authorRODRIGUES, G. S.
dc.date.accessioned2019-01-28T23:42:42Z-
dc.date.available2019-01-28T23:42:42Z-
dc.date.created2019-01-28
dc.date.issued2002
dc.identifier.citationIn: Brazilian Archives of Biology and Technology. Curitiba, v.45, n.3, , Sep. 2002.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1104895-
dc.descriptionThe objective of the present study was to apply a highly sensitive botanical test of mutagenicity (the Tradescantia stamen-hair mutation bioassay) to assess in situ the biological responses induced by naturally occurring radiation in the Poços de Caldas Plateau. The mutagenesis was evaluated in environments presenting gamma radiation exposure rates ranging from 1.5 mR.min-1 up to 100.0 mR.min-1. The results consistently showed only borderline increases in mutation frequencies in plants exposed to areas with high radiation background, as compared to non-exposed plants. It was concluded that the levels of natural radiation prevalent in the Poços de Caldas Plateau were not sufficient to induce significant increases in mutation rate, even in the extremely sensitive Tradescantia stamen hair mutation bioassay and mutagenesis evaluation test could be a useful monitoring system for natural radiation exposure.
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectBiological
dc.subjectRadiação natural
dc.titleBiological response of tradescantia stamen-hairs to high levels of natural radiation in the Poços de Caldas plateau.
dc.typeArtigo de periódico
dc.date.updated2019-01-28T23:42:42Zpt_BR
dc.subject.nalthesaurusTradescantia
dc.format.extent2p. 301-307
riaa.ainfo.id1104895
riaa.ainfo.lastupdate2019-01-28
dc.contributor.institutionHELOISA DE AZEVEDO GOMES, CNEN - Comissão Nacional de Energia Nuclear; NOUAILHETAS, Y., Coordenação de Instalações Nucleares/RJ; NIVALDO CARLOS DA SILVA, CNEN - Comissão Nacional de Energia Nuclear; MEZRAHI, A., Coordenação de Instalações Nucleares/RJ; ALMEIRA, C. E. B. de, Coordenação de Instalações Nucleares/RJ; GERALDO STACHETTI RODRIGUES, CNPMA.
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