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Registro Completo |
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Biblioteca(s): |
Embrapa Roraima; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
14/12/2021 |
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Data da última atualização: |
14/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MACHADO, C. de A.; VENDRAME, W. A.; RUBIO NETO, A.; CHAGAS, E. A.; CHAGAS, P. C.; LEDO, A. da S. |
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Afiliação: |
CAROLINE DE ARAÚJO MACHADO, UFS; WAGNER APARECIDO VENDRAME, UNIVERSITY OF FLORIDA; AURÉLIO RÚBIO NETO, IFG; EDVAN ALVES CHAGAS, CPAF-RR; POLLYANA CARDOSO CHAGAS, UFRR; ANA DA SILVA LEDO, CPATC. |
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Título: |
In vitro viability of pollen grain of fiji dwarf coconut accession. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Plant Cell Culture & Micropropagation, n. 17, e166, 2021. |
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Idioma: |
Inglês |
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Conteúdo: |
Lethal yellowing is a disease that causes severe damages to coconut palms and it has devastated the coconut canopy of several Caribbean islands, and areas of southern Florida. The Fiji dwarf coconut accession has demonstrated tolerance to this disease. Pollen storage and germination provides useful information for conservation strategy and genetic improvement programs. The objective of this study was to evaluate pollen viability of Fiji dwarf coconut by in vitro germination under different nutritional and abiotic conditions. For the first experiment, two liquid culture media were evaluated for in vitro germination of Fiji dwarf coconut pollen; the Lora culture medium and the Armendariz culture medium combined with four temperature levels. In the second experiment, different sucrose concentrations in the Lora culture medium (4, 8, 12 and 16%) were evaluated combined with two incubation times (6 and 24 h) in the presence or absence of light. The highest in vitro germination of pollen grain was obtained in Lora culture medium by 24 h incubation period at 28 ºC. The light condition does not influence the germination process. In vitro germination percentage improved as the sucrose concentration increased according to a linear regression. In contrast, damage pollen grain percentage reduced according to a quadratic regression. |
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Palavras-Chave: |
Germinação in vitro. |
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Thesagro: |
Coco; Doença de Planta; Germinação; Pólen. |
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Thesaurus Nal: |
Coconuts. |
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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/229150/1/1049.In-vitro-viability.pdf
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Marc: |
LEADER 02041naa a2200253 a 4500
001 2137813
005 2021-12-14
008 2021 bl uuuu u00u1 u #d
100 1 $aMACHADO, C. de A.
245 $aIn vitro viability of pollen grain of fiji dwarf coconut accession.$h[electronic resource]
260 $c2021
520 $aLethal yellowing is a disease that causes severe damages to coconut palms and it has devastated the coconut canopy of several Caribbean islands, and areas of southern Florida. The Fiji dwarf coconut accession has demonstrated tolerance to this disease. Pollen storage and germination provides useful information for conservation strategy and genetic improvement programs. The objective of this study was to evaluate pollen viability of Fiji dwarf coconut by in vitro germination under different nutritional and abiotic conditions. For the first experiment, two liquid culture media were evaluated for in vitro germination of Fiji dwarf coconut pollen; the Lora culture medium and the Armendariz culture medium combined with four temperature levels. In the second experiment, different sucrose concentrations in the Lora culture medium (4, 8, 12 and 16%) were evaluated combined with two incubation times (6 and 24 h) in the presence or absence of light. The highest in vitro germination of pollen grain was obtained in Lora culture medium by 24 h incubation period at 28 ºC. The light condition does not influence the germination process. In vitro germination percentage improved as the sucrose concentration increased according to a linear regression. In contrast, damage pollen grain percentage reduced according to a quadratic regression.
650 $aCoconuts
650 $aCoco
650 $aDoença de Planta
650 $aGerminação
650 $aPólen
653 $aGerminação in vitro
700 1 $aVENDRAME, W. A.
700 1 $aRUBIO NETO, A.
700 1 $aCHAGAS, E. A.
700 1 $aCHAGAS, P. C.
700 1 $aLEDO, A. da S.
773 $tPlant Cell Culture & Micropropagation$gn. 17, e166, 2021.
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Registro original: |
Embrapa Roraima (CPAF-RR) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
02/12/2021 |
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Data da última atualização: |
09/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
FARIA, A. L. A.; CENTURION, H. A.; TORRES, J. A.; GONÇALVES, R. V.; RIBEIRO, L. S.; RIBEIRO, C.; CRUZ, J. C. da; NOGUEIRA, F. G. E. |
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Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Enhancing Nb2O5 activity for CO2 photoreduction through Cu nanoparticles cocatalyst deposited by DC-magnetron sputtering. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of CO2 Utilization, v. 53, 101739, 2021. |
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Páginas: |
1 - 8 |
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ISSN: |
2212 - 9820 |
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DOI: |
https://doi.org/10.1016/j.jcou.2021.101739 |
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Idioma: |
Inglês |
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Conteúdo: |
Herein we demonstrate that the deposition of a small loading of Cu nanoparticles (0.51 wt %) by DC-magnetron sputtering over niobium oxide (Nb2O5) increases its photocatalytic activity for the reduction of carbon dioxide (CO2) into methane (CH4), methanol (CH3OH), acetone (CH3COCH3), acetic acid (CH3COOH), isopropanol (CH3CH(OH)CH3) and formate (HCOO− ). The improvement in the CO2 photoreduction of the Nb2O5/Cu can be attributed mainly to a reduction in the recombination rate of the electron-holes pairs photogenerated due to the electron trapping by Cu species as observed by the photoluminescence analysis, high dispersion of Cu, and high specific surface area of material even after addition Cu |
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Palavras-Chave: |
CO2 photoreduction; Cu nanoparticles; Niobium oxide. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01556naa a2200277 a 4500
001 2137032
005 2022-06-09
008 2021 bl uuuu u00u1 u #d
022 $a2212 - 9820
024 7 $ahttps://doi.org/10.1016/j.jcou.2021.101739$2DOI
100 1 $aFARIA, A. L. A.
245 $aEnhancing Nb2O5 activity for CO2 photoreduction through Cu nanoparticles cocatalyst deposited by DC-magnetron sputtering.$h[electronic resource]
260 $c2021
300 $a1 - 8
520 $aHerein we demonstrate that the deposition of a small loading of Cu nanoparticles (0.51 wt %) by DC-magnetron sputtering over niobium oxide (Nb2O5) increases its photocatalytic activity for the reduction of carbon dioxide (CO2) into methane (CH4), methanol (CH3OH), acetone (CH3COCH3), acetic acid (CH3COOH), isopropanol (CH3CH(OH)CH3) and formate (HCOO− ). The improvement in the CO2 photoreduction of the Nb2O5/Cu can be attributed mainly to a reduction in the recombination rate of the electron-holes pairs photogenerated due to the electron trapping by Cu species as observed by the photoluminescence analysis, high dispersion of Cu, and high specific surface area of material even after addition Cu
653 $aCO2 photoreduction
653 $aCu nanoparticles
653 $aNiobium oxide
700 1 $aCENTURION, H. A.
700 1 $aTORRES, J. A.
700 1 $aGONÇALVES, R. V.
700 1 $aRIBEIRO, L. S.
700 1 $aRIBEIRO, C.
700 1 $aCRUZ, J. C. da
700 1 $aNOGUEIRA, F. G. E.
773 $tJournal of CO2 Utilization$gv. 53, 101739, 2021.
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Embrapa Instrumentação (CNPDIA) |
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