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Registros recuperados : 30 | |
3. | | ROSA, S. D. V. F. da; COELHO, S. V. B; FIGUEIREDO, M. A. Avanços da pesquisa em armazenamento de sementes de café em temperaturas subzero. In: CONGRESSO BRASILEIRO DE PESQUISAS CAFEEIRAS, 42., 2016, Serra Negra, SP. Produzir mais café, com economia, só com boa tecnologia: trabalhos apresentados. Varginha: Fundação Procafé, 2016. 466 p. Biblioteca(s): Embrapa Café. |
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6. | | FIGUEIREDO, M. A. de; ROSA, S. D. V. F. da; RICALDONI, M. A.; PEREIRA, C. C.; COELHO, S. V. B. Physiological, biochemical, and ultrastructural aspects of Coffea arabica L. seeds under different cryopreservation protocols. Ciência e Agrotecnologia, v. 45, e02702079, 2021. Título em português: Aspectos fisiológicos, bioquímicos e ultraestruturais de sementes de Coffea arabica L. submetidas a diferentes protocolos de criopreservação. Biblioteca(s): Embrapa Café. |
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8. | | RICALDONI, M. A.; ROSA, S. D. V. F. da; CARVALHO, M. A. de F.; FIGUEIREDO, M. A. de; COELHO, S. V. B.; BAUTE, J. L.; FANTAZZINI, T. B. Avaliação de mudas de café originadas de sementes criopreservadas. In: CONGRESSO BRASILEIRO DE PESQUISAS CAFEEIRAS, 45., 2019, Poços de Caldas. Mais tecnologias cafeeiras, nas cores brasileiras: trabalhos apresentados. Varginha: Fundação Procafé, 2019. p. 208-209 Apoio: Embrapa. CNPq, CAPES, FAPEMIG, INCT Café. Biblioteca(s): Embrapa Café. |
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9. | | FERREIRA, V. F.; RICALDONI, M. A.; ROSA, S. D. V. F. da; FIQUEIREDO, M. A.; COELHO, S. V. B.; FANTAZZINI, T. B. Endo-ß-mannanase enzyme activity in the structures of Coffea arabica L. seeds under different types of processing and drying. Ciência Rural, Santa Maria, v. 48, n. 12, e20170839, 2018 Título em português: Atividade da enzima endo-ß-mananase nas estruturas de sementes de Coffea arabica L. submetidas a diferentes tipos de processamentos e secagem Biblioteca(s): Embrapa Café. |
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10. | | STEPHANO FILHO, R.; PEREIRA, C. C.; COELHO, S. V. B.; ROSA, S. D. V. F. da; SOUZA, L. N. C. de; COELHO, L. F. S. Ação antioxidante em sementes de Coffea arabica L. com elevado nível de deterioração. In: CONGRESSO DE INICIAÇÃO CIENTÍFICA DA UFLA, 29., 2016, Lavras. [Anais...] Lavras: Universidade Federal de Lavras, 2016. Biblioteca(s): Embrapa Café. |
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11. | | 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. Acclimatization of coffee seedlings obtained from zygotic embryos of aged seeds. Australian Journal of Crop Science, v. 16, n. 9, p.112-1134, 2022. Biblioteca(s): Embrapa Café. |
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12. | | COELHO, S. V. B.; FIGUEIREDO, M. A. de; CLEMENTE, A. da C. S.; COELHO, L. F. S.; ROSA, S. D. V. F. da. Alterações fisiológicas e bioquímicas em sementes de café secas em sílica gel e soluções salinas saturadas. Pesquisa Agropecuária Brasileira, Brasília, DF, v.50, n.6, p.483-491, jun. 2015 Biblioteca(s): Embrapa Café; Embrapa Unidades Centrais. |
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14. | | RICALDONI, M. A.; ROSA, S. D. V. F. da; CARDOSO, F. P.; FIGUEIREDO, M. A. de; VILELA, A. L.; COELHO, S. V. B.; FÁVARIS, N. A. B. Antioxidant effect of cathodic water on seeds. Ciência rural, v. 50, n. 6, e20180474, 2020. Título em português: Ação antioxidante da água catódica em sementes. Biblioteca(s): Embrapa Café. |
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15. | | PEREIRA, C. C.; ROSA, S. D. V. F. da; COELHO, S. V. B.; COELHO, L. F. S.; SOUZA, L. N. C. de. Antioxidant treatment in whole and partitioned coffee seeds. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 121. Biblioteca(s): Embrapa Café. |
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16. | | LOUSADO, A. V. C.; COELHO, S. V. B.; ROSA, S. D. V. F. da; OLIVEIRA, R. M. E. de O.; STÉPHANO FILHO, R.; PEREIRA, C. C. Micooscopia eletrônica de varredura em sementes de café secadas até diferentes teores de água. In: CONGRESSO DE INICIAÇÃO CIENTÍFICA DA UFLA, 29., 2016, Lavras. [Anais...] Lavras: Universidade Federal de Lavras, 2016. Biblioteca(s): Embrapa Café. |
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17. | | ABREU, G. F. de; ROSA, S. D. V. F. da; CAIXETA, F.; CLEMENTE, A. da C. S.; PEREIRA, C. C.; COELHO, S. V. B. Colorimetria em grãos de café submetidos a diferentes métodos de processamento e armazenados em ambiente resfriado. In: SIMPÓSIO DE PESQUISA DOS CAFÉS DO BRASIL, 8., 2013, Salvador. Sustentabilidade e inclusão Social. Brasília, DF: Embrapa Café, 2013. Biblioteca(s): Embrapa Café. |
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18. | | FIGUEIREDO, M. A.; ROSA, S. D. V. F. da; CLEMENTE, A. C. S.; COELHO, S. V. B.; GUIMARÃES, G. C.; REIS, L. V. Enzymatic and cathodic water protection during coffee seed drying. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 125. Biblioteca(s): Embrapa Café. |
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19. | | COELHO, S. V. B.; ROSA, S. D. V. F. da; PEREIRA, C. C.; LOUSADO, A. V. C.; SOUZA, L. N. C. de; LIMA, V. A. Tolerance of Coffea arabica L. seeds to subzero temperatures after fast and slow drying. In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 26., 2016, Kunming,Yunnan, China. Proceedings... ASIC - Association for Science and Information on Coffee, 2016. p. 119. Biblioteca(s): Embrapa Café. |
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20. | | COELHO, S. V. B.; ROSA, S. D. V. F. da; CLEMENTE, A. da C. S.; PEREIRA, C. C.; FIGUEIREDO, M. A. de; REIS, L. V. Tolerance of Coffea arabica L. seeds to sub zero temperatures. Ciência e Agrotecnologia, v. 41, n. 3, p. 312-321, May/Jun. 2017. Título em português: Tolerância de sementes de Coffea arabica L. à temperaturas sub zero. Biblioteca(s): Embrapa Café. |
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Registros recuperados : 30 | |
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Registro Completo
Biblioteca(s): |
Embrapa Café. |
Data corrente: |
12/11/2019 |
Data da última atualização: |
12/11/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
COELHO, S. V. B.; ROSA, S. D. V. F. da; FANTAZZINI, T. B.; SILVA, L. C. |
Afiliação: |
Stefânia Vilas Boas Coelho, Universidade Federal de Lavras - UFLA; STTELA DELLYZETE VEIGA F DA ROSA, CNPCa; Tatiana Botelho Fantazzini, Universidade Federal de Lavras - UFLA; Luciano Coutinho Silva, Universidade Federal da Paraíba - UFPB. |
Título: |
Cryopreservation of Coffea canephora Pierre ex A. Froehner seeds: importance of drying rate and moisture content. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Australian Journal of Crop Science, v.13, n. 8, p. 1335-1342, 2019. |
Idioma: |
Inglês |
Conteúdo: |
Seeds of the Coffea canephora species are considered more recalcitrant than those of the Coffea arabica species. They tolerate partial dehydration and they cannot be stored in conventional seed banks at -18ºC because they are sensitive to freezing temperatures. Cryopreservation is a reliable method for storing seeds with these characteristics for long periods. However, preliminary studies are necessary to determine ideal storage conditions. The aim of this study was to investigate the ideal physical and physiological conditions for cryopreservation of Coffea canephora seeds to reduce seed mortality caused by the formation of intracellular ice crystals and to avoid cell damage caused by excessive desiccation. Seeds were subjected to rapid drying in silica gel and slow drying in saturated NaCl solution to moisture contents of 0.20, 0.25, and 0.28 g.g-¹ (dry basis), followed by direct immersion in liquid nitrogen for rapid freezing. Physiological and biochemical analyses were performed to evaluate seed quality before and after cryopreservation. Rapid drying of Coffea canephora seeds to values near 0.20 g.g-1 (db) does not cause reduction in physiological quality. Moisture content of 0.25 g.g-¹ brings about greater survival of Coffea canephora seeds after cryopreservation. Drying rate affects the physiological quality of cryopreserved Coffea canephora seeds, and rapid drying in silica gel is more favorable than slow drying in a saturated NaCl solution. The activity of the enzymes catalase, esterase, glutamic oxaloacetic transaminase, and polyphenol oxidase are indicators of seed quality for Coffea canephora seeds subjected to cryopreservation. MenosSeeds of the Coffea canephora species are considered more recalcitrant than those of the Coffea arabica species. They tolerate partial dehydration and they cannot be stored in conventional seed banks at -18ºC because they are sensitive to freezing temperatures. Cryopreservation is a reliable method for storing seeds with these characteristics for long periods. However, preliminary studies are necessary to determine ideal storage conditions. The aim of this study was to investigate the ideal physical and physiological conditions for cryopreservation of Coffea canephora seeds to reduce seed mortality caused by the formation of intracellular ice crystals and to avoid cell damage caused by excessive desiccation. Seeds were subjected to rapid drying in silica gel and slow drying in saturated NaCl solution to moisture contents of 0.20, 0.25, and 0.28 g.g-¹ (dry basis), followed by direct immersion in liquid nitrogen for rapid freezing. Physiological and biochemical analyses were performed to evaluate seed quality before and after cryopreservation. Rapid drying of Coffea canephora seeds to values near 0.20 g.g-1 (db) does not cause reduction in physiological quality. Moisture content of 0.25 g.g-¹ brings about greater survival of Coffea canephora seeds after cryopreservation. Drying rate affects the physiological quality of cryopreserved Coffea canephora seeds, and rapid drying in silica gel is more favorable than slow drying in a saturated NaCl solution. The activity of the enzyme... Mostrar Tudo |
Palavras-Chave: |
Antioxidant enzymes; Drying in silica gel; Ice crystals; Physiological quality; Rapid drying. |
Thesaurus NAL: |
Recalcitrant seeds. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/204558/1/Cryopreservation-of-Coffea-canephora-Pierre.pdf
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Marc: |
LEADER 02404naa a2200229 a 4500 001 2114203 005 2019-11-12 008 2019 bl uuuu u00u1 u #d 100 1 $aCOELHO, S. V. B. 245 $aCryopreservation of Coffea canephora Pierre ex A. Froehner seeds$bimportance of drying rate and moisture content.$h[electronic resource] 260 $c2019 520 $aSeeds of the Coffea canephora species are considered more recalcitrant than those of the Coffea arabica species. They tolerate partial dehydration and they cannot be stored in conventional seed banks at -18ºC because they are sensitive to freezing temperatures. Cryopreservation is a reliable method for storing seeds with these characteristics for long periods. However, preliminary studies are necessary to determine ideal storage conditions. The aim of this study was to investigate the ideal physical and physiological conditions for cryopreservation of Coffea canephora seeds to reduce seed mortality caused by the formation of intracellular ice crystals and to avoid cell damage caused by excessive desiccation. Seeds were subjected to rapid drying in silica gel and slow drying in saturated NaCl solution to moisture contents of 0.20, 0.25, and 0.28 g.g-¹ (dry basis), followed by direct immersion in liquid nitrogen for rapid freezing. Physiological and biochemical analyses were performed to evaluate seed quality before and after cryopreservation. Rapid drying of Coffea canephora seeds to values near 0.20 g.g-1 (db) does not cause reduction in physiological quality. Moisture content of 0.25 g.g-¹ brings about greater survival of Coffea canephora seeds after cryopreservation. Drying rate affects the physiological quality of cryopreserved Coffea canephora seeds, and rapid drying in silica gel is more favorable than slow drying in a saturated NaCl solution. The activity of the enzymes catalase, esterase, glutamic oxaloacetic transaminase, and polyphenol oxidase are indicators of seed quality for Coffea canephora seeds subjected to cryopreservation. 650 $aRecalcitrant seeds 653 $aAntioxidant enzymes 653 $aDrying in silica gel 653 $aIce crystals 653 $aPhysiological quality 653 $aRapid drying 700 1 $aROSA, S. D. V. F. da 700 1 $aFANTAZZINI, T. B. 700 1 $aSILVA, L. C. 773 $tAustralian Journal of Crop Science$gv.13, n. 8, p. 1335-1342, 2019.
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Embrapa Café (CNPCa) |
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