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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais; Embrapa Uva e Vinho. |
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Data corrente: |
14/07/2010 |
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Data da última atualização: |
25/04/2018 |
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Autoria: |
PIRES, L. F.; BACCHI, O. O. S. |
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Afiliação: |
Luiz Fernando Pires, Universidade Estadual de Ponta Grossa; Osny Oliveira Santos Bacchi, Universidade de São Paulo. |
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Título: |
Mudanças na estrutura do solo avaliada com uso de tomografia computadorizada. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 4, p. 391-400, abr. 2010 |
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Idioma: |
Português |
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Notas: |
Título em inglês: Soil structure changes evaluated with computed tomography . |
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Conteúdo: |
Resumo - O objetivo deste trabalho foi avaliar, em escala milimétrica, a modificação da densidade e da porosidade de amostras deformadas de solo submetidas a ciclos de umedecimento e secamento (U-S), por meio da tomografia computadorizada de raios gama. Amostras com 98, I cm' foram preparadas procedendo ao peneiramento do solo em malha de 2 mm e acondicionamento de forma homogênea em tubos de PVc. As amostras de solo foram submetidas a um, dois e três ciclos de V-S. As amostras controle não foram submetidas a nenhum ciclo de V-S. Após a aplicação dos ciclos de U-S, a porosidade das amostras diminuiu e as camadas de solo se adensaram. Os dados de tomografia computadorizada permitiram análise contínua da densidade do solo e de sua poros idade, em camadas milimétricas (0,08 cm), o que não pode ser alcançado facilmente por métodos tradicionais usados em física do solo. |
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Palavras-Chave: |
Análise de imagens; Atenuação de raios gama; Ciclos de umedecimento e secamento; Densidade do solo; Gamma-ray attenuation; Porosidade do solo; Soil bulk density; Soil porosity; Tomografia computadorizada; Wetting and drying cycles. |
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Thesagro: |
Solo. |
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Thesaurus Nal: |
Image analysis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/105926/1/Mudancas.pdf
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Marc: |
LEADER 01844naa a2200289 a 4500
001 1857648
005 2018-04-25
008 2010 bl uuuu u00u1 u #d
100 1 $aPIRES, L. F.
245 $aMudanças na estrutura do solo avaliada com uso de tomografia computadorizada.
260 $c2010
500 $aTítulo em inglês: Soil structure changes evaluated with computed tomography .
520 $aResumo - O objetivo deste trabalho foi avaliar, em escala milimétrica, a modificação da densidade e da porosidade de amostras deformadas de solo submetidas a ciclos de umedecimento e secamento (U-S), por meio da tomografia computadorizada de raios gama. Amostras com 98, I cm' foram preparadas procedendo ao peneiramento do solo em malha de 2 mm e acondicionamento de forma homogênea em tubos de PVc. As amostras de solo foram submetidas a um, dois e três ciclos de V-S. As amostras controle não foram submetidas a nenhum ciclo de V-S. Após a aplicação dos ciclos de U-S, a porosidade das amostras diminuiu e as camadas de solo se adensaram. Os dados de tomografia computadorizada permitiram análise contínua da densidade do solo e de sua poros idade, em camadas milimétricas (0,08 cm), o que não pode ser alcançado facilmente por métodos tradicionais usados em física do solo.
650 $aImage analysis
650 $aSolo
653 $aAnálise de imagens
653 $aAtenuação de raios gama
653 $aCiclos de umedecimento e secamento
653 $aDensidade do solo
653 $aGamma-ray attenuation
653 $aPorosidade do solo
653 $aSoil bulk density
653 $aSoil porosity
653 $aTomografia computadorizada
653 $aWetting and drying cycles
700 1 $aBACCHI, O. O. S.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 45, n. 4, p. 391-400, abr. 2010
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
25/11/2022 |
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Data da última atualização: |
11/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
VILELA, A. L. O.; ROSA, S. D. V. F. da; COELHO, S. V. B.; PEREIRA, C. C.; SOUZA, A. C. de; RIBEIRO, F. A. S. |
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Afiliação: |
ANA LUIZA OLIVEIRA VILELA, UNIVERSIDADE FEDERAL DE LAVRAS; STTELA DELLYZETE VEIGA F DA ROSA, CNPCa; STEFÂNIA VILAS BOAS COELHO, UNIVERSIDADE FEDERAL DE LAVRAS; CRISTIANE CARVALHO PEREIRA, UNIVERSIDADE FEDERAL DE LAVRAS; ANA CRISTINA DE SOUZA, UNIVERSIDADE FEDERAL DE LAVRAS; FERNANDO AUGUSTO SALES RIBEIRO, UNIVERSIDADE FEDERAL DE LAVRAS. |
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Título: |
Acclimatization of coffee seedlings obtained from zygotic embryos of aged seeds. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Australian Journal of Crop Science, v. 16, n. 9, p.112-1134, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
Coffee seeds rapidly lose viability during storage, which hinders the development of vigorous seedlings for crop establishment. There are reports that seed endosperm is more sensitive to deterioration than embryos, which can be excised and cultivated in vitro. However, a substantial number of plants grown in vitro do not survive during transfer to a greenhouse or field environment. The objective of this study was to evaluate the acclimatization of coffee seedlings of cultivar Catuaí Amarelo IAC 62, developed from zygotic embryos obtained from aged seeds in different substrates and environments, for the production of well-developed seedlings suitable for planting. For this purpose, seedlings were obtained from the in vitro cultivation of embryos obtained from seeds of two quality levels: freshly harvested seeds and artificially aged seeds. Zygotic embryos were extracted from the seeds and cultivated in MS medium. At 60 days, the percentages of normal and abnormal seedlings and dead seeds were evaluated. The good-quality seedlings grown in vitro for 60 days were transplanted into two different substrates (Tropstrato and coconut fiber) and acclimatized in two environments (growth room and greenhouse with a misting system). The plants were evaluated for height, stem diameter, number of leaves, chlorophyll content, and growth rate. The greenhouse environment was better for seedling growth, possibly due to its higher sunlight and temperature. The best substrate was coconut fiber, as it ensured better development of plants from freshly harvested seeds and those from aged seeds. It is possible to develop healthy seedlings from seeds with low viability. MenosCoffee seeds rapidly lose viability during storage, which hinders the development of vigorous seedlings for crop establishment. There are reports that seed endosperm is more sensitive to deterioration than embryos, which can be excised and cultivated in vitro. However, a substantial number of plants grown in vitro do not survive during transfer to a greenhouse or field environment. The objective of this study was to evaluate the acclimatization of coffee seedlings of cultivar Catuaí Amarelo IAC 62, developed from zygotic embryos obtained from aged seeds in different substrates and environments, for the production of well-developed seedlings suitable for planting. For this purpose, seedlings were obtained from the in vitro cultivation of embryos obtained from seeds of two quality levels: freshly harvested seeds and artificially aged seeds. Zygotic embryos were extracted from the seeds and cultivated in MS medium. At 60 days, the percentages of normal and abnormal seedlings and dead seeds were evaluated. The good-quality seedlings grown in vitro for 60 days were transplanted into two different substrates (Tropstrato and coconut fiber) and acclimatized in two environments (growth room and greenhouse with a misting system). The plants were evaluated for height, stem diameter, number of leaves, chlorophyll content, and growth rate. The greenhouse environment was better for seedling growth, possibly due to its higher sunlight and temperature. The best substrate was coconut fiber, ... Mostrar Tudo |
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Palavras-Chave: |
Zygotic embryos. |
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Thesaurus NAL: |
Coffea arabica var. arabica; Enzyme substrates; Greenhouses; In vitro culture; Seedlings; Seeds. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150877/1/Acclimatization-of-coffee-seedlings-obtained.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1148763/1/Acclimatization-of-coffee-seedlings-obtained.pdf
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Marc: |
LEADER 02455naa a2200265 a 4500
001 2150877
005 2023-01-11
008 2022 bl uuuu u00u1 u #d
100 1 $aVILELA, A. L. O.
245 $aAcclimatization of coffee seedlings obtained from zygotic embryos of aged seeds.$h[electronic resource]
260 $c2022
520 $aCoffee seeds rapidly lose viability during storage, which hinders the development of vigorous seedlings for crop establishment. There are reports that seed endosperm is more sensitive to deterioration than embryos, which can be excised and cultivated in vitro. However, a substantial number of plants grown in vitro do not survive during transfer to a greenhouse or field environment. The objective of this study was to evaluate the acclimatization of coffee seedlings of cultivar Catuaí Amarelo IAC 62, developed from zygotic embryos obtained from aged seeds in different substrates and environments, for the production of well-developed seedlings suitable for planting. For this purpose, seedlings were obtained from the in vitro cultivation of embryos obtained from seeds of two quality levels: freshly harvested seeds and artificially aged seeds. Zygotic embryos were extracted from the seeds and cultivated in MS medium. At 60 days, the percentages of normal and abnormal seedlings and dead seeds were evaluated. The good-quality seedlings grown in vitro for 60 days were transplanted into two different substrates (Tropstrato and coconut fiber) and acclimatized in two environments (growth room and greenhouse with a misting system). The plants were evaluated for height, stem diameter, number of leaves, chlorophyll content, and growth rate. The greenhouse environment was better for seedling growth, possibly due to its higher sunlight and temperature. The best substrate was coconut fiber, as it ensured better development of plants from freshly harvested seeds and those from aged seeds. It is possible to develop healthy seedlings from seeds with low viability.
650 $aCoffea arabica var. arabica
650 $aEnzyme substrates
650 $aGreenhouses
650 $aIn vitro culture
650 $aSeedlings
650 $aSeeds
653 $aZygotic embryos
700 1 $aROSA, S. D. V. F. da
700 1 $aCOELHO, S. V. B.
700 1 $aPEREIRA, C. C.
700 1 $aSOUZA, A. C. de
700 1 $aRIBEIRO, F. A. S.
773 $tAustralian Journal of Crop Science$gv. 16, n. 9, p.112-1134, 2022.
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Embrapa Café (CNPCa) |
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