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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
18/01/2022 |
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Data da última atualização: |
18/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
COELHO, S. V. B.; ROSA, S. D. V. F. da; LACERDA, L. N. C.; CLEMENTE, A. da C. S.; SILVA, L. C.; FANTAZZINI, T. B.; RIBEIRO, F. S.; CASTRO, E. de M. |
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Afiliação: |
STEFÂNIA VILAS BOAS COELHO, UFLA; STTELA DELLYZETE VEIGA F DA ROSA, CNPCa; LAURA NARDELLI CASTANHEIRA LACERDA, UFLA; ALINE DA CONSOLAÇÃO SAMPAIO CLEMENTE, GRUPO FERTILÁQUA; LUCIANO COUTINHO SILVA, UNIVERSIDADE FEDERAL DA PARAÍBA; TATIANA BOTELHO FANTAZZINI, CAMPEÃ AGRONEGÓCIO; FERNANDO SALES RIBEIRO, UFLA; ELISA DE MELO CASTRO, UFLA. |
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Título: |
Ultrastructural damage in coffee seeds exposed to drying and to subzero (°C) temperatures. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Coffee Science, v. 15, e151760, p. 1-8, 2020. |
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Idioma: |
Inglês |
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Conteúdo: |
During drying and freezing, protective mechanisms act to maintain seed physiological quality. Some of these mechanisms contribute to the integrity of cell membranes. The damage caused to cell membranes due to cell stress can be seen in ultrastructural studies. The aim of this study was to investigate ultrastructural changes in endosperm cells of coffee seeds brought about by drying and by exposure to low temperatures. Seeds of Coffea Arabica were dried in silica gel to moisture contents of 40, 20, and 5 % (wb) and brought to equilibrium at temperatures of 10, -20, and -86oC. Germination, vigor, and tetrazolium tests were performed for evaluation of seed physiological quality. Ultrastructural damage was analyzed by scanning electron microscopy. Coffee seeds with 40% moisture content have whole, swollen, and expanded cells, with a filled lumen and without signs of damage. The physiological and ultrastructural quality of seeds exposed to below zero temperatures with 40% moisture content is compromised. They have null germination and empty cells, indicating leakage of cell content. Drying of coffee seeds leads to uniform contraction of inner cell content. Drying of coffee seeds to 5% moisture content leads to intense contraction of cell volume, with physiological and ultrastructural damage. |
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Thesagro: |
Coffea Arábica; Dano Pelo Frio; Semente. |
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Thesaurus Nal: |
Coffea arabica var. arabica; Scanning electron microscopy; Seeds. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/230356/1/Ultrastructural-damage-in-coffee-seeds.pdf
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Marc: |
LEADER 02127naa a2200277 a 4500
001 2139148
005 2022-01-18
008 2020 bl uuuu u00u1 u #d
100 1 $aCOELHO, S. V. B.
245 $aUltrastructural damage in coffee seeds exposed to drying and to subzero (°C) temperatures.$h[electronic resource]
260 $c2020
520 $aDuring drying and freezing, protective mechanisms act to maintain seed physiological quality. Some of these mechanisms contribute to the integrity of cell membranes. The damage caused to cell membranes due to cell stress can be seen in ultrastructural studies. The aim of this study was to investigate ultrastructural changes in endosperm cells of coffee seeds brought about by drying and by exposure to low temperatures. Seeds of Coffea Arabica were dried in silica gel to moisture contents of 40, 20, and 5 % (wb) and brought to equilibrium at temperatures of 10, -20, and -86oC. Germination, vigor, and tetrazolium tests were performed for evaluation of seed physiological quality. Ultrastructural damage was analyzed by scanning electron microscopy. Coffee seeds with 40% moisture content have whole, swollen, and expanded cells, with a filled lumen and without signs of damage. The physiological and ultrastructural quality of seeds exposed to below zero temperatures with 40% moisture content is compromised. They have null germination and empty cells, indicating leakage of cell content. Drying of coffee seeds leads to uniform contraction of inner cell content. Drying of coffee seeds to 5% moisture content leads to intense contraction of cell volume, with physiological and ultrastructural damage.
650 $aCoffea arabica var. arabica
650 $aScanning electron microscopy
650 $aSeeds
650 $aCoffea Arábica
650 $aDano Pelo Frio
650 $aSemente
700 1 $aROSA, S. D. V. F. da
700 1 $aLACERDA, L. N. C.
700 1 $aCLEMENTE, A. da C. S.
700 1 $aSILVA, L. C.
700 1 $aFANTAZZINI, T. B.
700 1 $aRIBEIRO, F. S.
700 1 $aCASTRO, E. de M.
773 $tCoffee Science$gv. 15, e151760, p. 1-8, 2020.
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Registro original: |
Embrapa Café (CNPCa) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
19/01/2017 |
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Data da última atualização: |
19/01/2017 |
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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: |
COSER, T. R.; RAMOS, M. L. G.; FIGUEIREDO, C. C. de; URQUIAGA, S.; CARVALHO, A. M. de; BARROS, F. V. |
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Afiliação: |
SEGUNDO SACRAMENTO U CABALLERO, CNPAB; ARMINDA MOREIRA DE CARVALHO, CPAC. |
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Título: |
Nitrogen uptake efficiency of maize in monoculture and intercropped with Brachiaria humidicola and Panicum maximum in a dystrophic Red-yellow latosol of the Brazilian Cerrado. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Crop & Pasture Science, 2015. |
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Páginas: |
8 p. |
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Idioma: |
Português |
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Palavras-Chave: |
Biomassa microbiana; Forrageira. |
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Thesagro: |
Fertilizante Nitrogenado; Milho; Nitrogênio. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00748naa a2200241 a 4500
001 2061220
005 2017-01-19
008 2015 bl uuuu u00u1 u #d
100 1 $aCOSER, T. R.
245 $aNitrogen uptake efficiency of maize in monoculture and intercropped with Brachiaria humidicola and Panicum maximum in a dystrophic Red-yellow latosol of the Brazilian Cerrado.
260 $c2015
300 $a8 p.
650 $aFertilizante Nitrogenado
650 $aMilho
650 $aNitrogênio
653 $aBiomassa microbiana
653 $aForrageira
700 1 $aRAMOS, M. L. G.
700 1 $aFIGUEIREDO, C. C. de
700 1 $aURQUIAGA, S.
700 1 $aCARVALHO, A. M. de
700 1 $aBARROS, F. V.
773 $tCrop & Pasture Science, 2015.
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Embrapa Cerrados (CPAC) |
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