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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
22/12/2008 |
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Data da última atualização: |
22/11/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PESSENDA, L. C. R.; GOUVEIA, S. E. M.; LEDRU, M. P.; ARAVENA, R.; RICARDI-BRANCO, F. S.; BENDASSOLLI, J. A.; RIBEIRO, A. S.; SAIA, S. E. M. G.; SIFEDDINE, A.; MENOR, E. de A.; OLIVEIRA, S. M. B. de; CORDEIRO, R. C.; FREITAS, A. M. de M.; BOULET, R. : FILIZOLA, H. F.; FILIZOLA, H. F. |
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Afiliação: |
Luiz C. R. Pessenda, CENA/USP; Susy E. M. Gouveia, CENA/USP; Marie-Pierre Ledru, Institut de Recherche pour le Développement; Ramón Aravena, University of Waterloo; Fresia Soledad Ricardi-Branco, Instituto de Geologia-UNICAMP; José A. Bendassolli, CENA/USP; Adauto de S. Ribeiro, Autônomo; Soraya Elaine Marques Gouveia Saia, CENA/USP; Abdelfettah Sifeddine, Institut de Recherche pour le Développement; Eldemar de A. Menor, Autônomo; Sônia Maria B. de Oliveira, Instituto de Geociêncas-USP; Renato C. Cordeiro, Autônomo; Ângela M. de M.Freitas, Autônoma; René Boulet, Autônomo; HELOISA FERREIRA FILIZOLA, CNPMA. |
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Título: |
Interdisciplinary paleovegetation study in the Fernando de Noronha Island (Pernambuco State), northeastern Brazil. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Anais da Academia Brasileira de Ciências, v. 80, n. 4, p. 1-15, 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this research was to reconstruct vegetation changes (with climate inferences) that occurred during the Holocene in the Fernando de Noronha Island, Pernambuco State, northeastern Brazil. The research approach included the use of geochemical (mineralogy, elemental), carbon isotopes (?13C, 14C) and pollen analyses in soil organic matter (SOM) and sediments collected in Lagoa da Viração and Manguezal do Sueste. The carbon isotopes data of SOM indicated that there was no significant vegetation changes during the last 7400 BP, suggesting that the climate was not the determinant factor for the vegetation dynamic. The pollen analysis of the sediment of a core collected in the Lagoa da Viração showed the absence of Quaternary material in the period between 720 BP and 90 BP. The mineralogical analysis of deeper layer showed the presence of diopside indicating this material was developed ?in situ?. Only in the shallow part of the core were found pollen of similar plant species of the modern vegetation. The geochemistry and isotope results, in association with the sediment type and pollen analyses of sediment samples of Manguezal do Sueste, indicated variations in the vegetation and in its location since the middle Holocene. Such variations can be associated with climatic events and sea level oscillations and also with anthropogenic events considering the last five hundred years. |
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Palavras-Chave: |
Paleobotânica. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/150374/1/2008CP-06.pdf
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Marc: |
LEADER 02347naa a2200301 a 4500
001 1015578
005 2016-11-22
008 2008 bl uuuu u00u1 u #d
100 1 $aPESSENDA, L. C. R.
245 $aInterdisciplinary paleovegetation study in the Fernando de Noronha Island (Pernambuco State), northeastern Brazil.$h[electronic resource]
260 $c2008
520 $aThe aim of this research was to reconstruct vegetation changes (with climate inferences) that occurred during the Holocene in the Fernando de Noronha Island, Pernambuco State, northeastern Brazil. The research approach included the use of geochemical (mineralogy, elemental), carbon isotopes (?13C, 14C) and pollen analyses in soil organic matter (SOM) and sediments collected in Lagoa da Viração and Manguezal do Sueste. The carbon isotopes data of SOM indicated that there was no significant vegetation changes during the last 7400 BP, suggesting that the climate was not the determinant factor for the vegetation dynamic. The pollen analysis of the sediment of a core collected in the Lagoa da Viração showed the absence of Quaternary material in the period between 720 BP and 90 BP. The mineralogical analysis of deeper layer showed the presence of diopside indicating this material was developed ?in situ?. Only in the shallow part of the core were found pollen of similar plant species of the modern vegetation. The geochemistry and isotope results, in association with the sediment type and pollen analyses of sediment samples of Manguezal do Sueste, indicated variations in the vegetation and in its location since the middle Holocene. Such variations can be associated with climatic events and sea level oscillations and also with anthropogenic events considering the last five hundred years.
653 $aPaleobotânica
700 1 $aGOUVEIA, S. E. M.
700 1 $aLEDRU, M. P.
700 1 $aARAVENA, R.
700 1 $aRICARDI-BRANCO, F. S.
700 1 $aBENDASSOLLI, J. A.
700 1 $aRIBEIRO, A. S.
700 1 $aSAIA, S. E. M. G.
700 1 $aSIFEDDINE, A.
700 1 $aMENOR, E. de A.
700 1 $aOLIVEIRA, S. M. B. de
700 1 $aCORDEIRO, R. C.
700 1 $aFREITAS, A. M. de M.
700 1 $aBOULET, R. : FILIZOLA, H. F.
700 1 $aFILIZOLA, H. F.
773 $tAnais da Academia Brasileira de Ciências$gv. 80, n. 4, p. 1-15, 2008.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
21/11/2019 |
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Data da última atualização: |
21/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
LIMA, F. B. de; PASSOS, A. M. A. dos; SILVA, J. B. da; ALVES, C. Z.; NETTO, D. A. M.; COTRIM, M. F. |
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Afiliação: |
Fábio Batista de Lima, Universidade Federal do Acre; ALEXANDRE MARTINS ABDAO DOS PASSOS, CNPMS; Josué Bispo da Silva, Universidade Federal de Mato Grosso do Sul; Charline Zaratin Alves, Universidade Federal de Mato Grosso do Sul; Déa Alecia Martins Netto, Pesquisadora aposentada - Embrapa Milho e Sorgo; Mayara Fávero Cotrim, Universidade Federal de Mato Grosso do Sul. |
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Título: |
Accelerated aging in sorghum genotypes. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Bioscience Journal, v. 35, n. 2, p. 450-458, 2019 . |
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DOI: |
10.14393/BJ-v35n2a2019-41774 |
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Idioma: |
Inglês |
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Conteúdo: |
The accelerated aging test has stood out among vigor tests. It has been used with different objectives, including as an assistance method in the selection of cultivars for plant breeding. This research aimed to analyze the effects of different exposure times to accelerated aging on the germination and vigor of sorghum seeds from different genetic sources. The experiment consisted of a completely randomized design with eight genotypes and four replications. Seeds were subject to an accelerated aging test with four exposure times (0, 24, 72, and 96 h) at a temperature of 47 °C and then evaluated by germination test (G), germination speed index (GSI), mean germination time (MGT), seedling emergence (SE), emergence speed index (ESI), and mean emergence time (MET). All genotypes presented a reduction in germination, GSI, SE, and ESI, and an increase in MGT and MET. The genotype CMX5156A had an increase in seed vigor under conditions of high temperature and relative humidity. Accelerated aging for 72 hours at 47 °C drastically reduces seed vigor. The accelerated aging test can be used to differentiate sorghum genotypes in breeding programs. |
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Palavras-Chave: |
Qualidade fisiológica. |
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Thesagro: |
Germinação; Sorghum Bicolor. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/205192/1/Accelerated-aging.pdf
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Marc: |
LEADER 01802naa a2200229 a 4500
001 2114867
005 2019-11-21
008 2019 bl uuuu u00u1 u #d
024 7 $a10.14393/BJ-v35n2a2019-41774$2DOI
100 1 $aLIMA, F. B. de
245 $aAccelerated aging in sorghum genotypes.$h[electronic resource]
260 $c2019
520 $aThe accelerated aging test has stood out among vigor tests. It has been used with different objectives, including as an assistance method in the selection of cultivars for plant breeding. This research aimed to analyze the effects of different exposure times to accelerated aging on the germination and vigor of sorghum seeds from different genetic sources. The experiment consisted of a completely randomized design with eight genotypes and four replications. Seeds were subject to an accelerated aging test with four exposure times (0, 24, 72, and 96 h) at a temperature of 47 °C and then evaluated by germination test (G), germination speed index (GSI), mean germination time (MGT), seedling emergence (SE), emergence speed index (ESI), and mean emergence time (MET). All genotypes presented a reduction in germination, GSI, SE, and ESI, and an increase in MGT and MET. The genotype CMX5156A had an increase in seed vigor under conditions of high temperature and relative humidity. Accelerated aging for 72 hours at 47 °C drastically reduces seed vigor. The accelerated aging test can be used to differentiate sorghum genotypes in breeding programs.
650 $aGerminação
650 $aSorghum Bicolor
653 $aQualidade fisiológica
700 1 $aPASSOS, A. M. A. dos
700 1 $aSILVA, J. B. da
700 1 $aALVES, C. Z.
700 1 $aNETTO, D. A. M.
700 1 $aCOTRIM, M. F.
773 $tBioscience Journal$gv. 35, n. 2, p. 450-458, 2019 .
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Embrapa Milho e Sorgo (CNPMS) |
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