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Cryopreservation in Coffea canephora Pierre seeds: slow and fast cooling. Repositório Alice
COELHO, S. V. B.; ROSA, S. D. V. F. da; FANTAZZINI, T. B.; BAUTE, J. L.; SILVA, L. C..
Coffee is one of the main agricultural commodities in the country, and it is important to conservation of plant material for breeding programs. Cryopreservation is a promising alternative for preserving in the long-term the germplasm of species considered recalcitrant. However, studies should be performed to achieve maximum survival of seedlings after immersion in liquid nitrogen. The objective of this work was to find a cryopreservation protocol for storing seeds of Coffea canephora, studying two methods of cryopreservation, slow and fast cooling. Seeds were subjected to drying in silica gel up to the water content of 0.25 g g-1. In the first experiment, dried seeds were subjected to treatments of slow cooling at speeds of -1 ºC min-1,-3 ºC min-1 and -5...
Tipo: Artigo de periódico Palavras-chave: Drying in silica gel; Ice crystals; Isoenzymes; Physiological quality; Secagem em sílica gel; Semente recalcitrante; Cristal de gelo; Qualidade fisiológica; Secagem; Isoenzima; Recalcitrant seeds.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108759
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Cryopreservation of Coffea canephora Pierre ex A. Froehner seeds: importance of drying rate and moisture content. Repositório Alice
COELHO, S. V. B.; ROSA, S. D. V. F. da; FANTAZZINI, T. B.; SILVA, L. C..
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...
Tipo: Artigo de periódico Palavras-chave: Antioxidant enzymes; Drying in silica gel; Ice crystals; Physiological quality; Rapid drying; Recalcitrant seeds.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114203
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Cryopreservation in Coffea canephora Pierre seeds: Slow and fast cooling Ciência e Agrotecnologia
Coelho,Stefânia Vilas Boas; Rosa,Sttela Dellyzete Veiga Franco da; Fantazzini,Tatiana Botelho; Baute,Júlia Lima; Silva,Luciano Coutinho.
ABSTRACT Coffee is one of the main agricultural commodities in the country, and it is important to conservation of plant material for breeding programs. Cryopreservation is a promising alternative for preserving in the long-term the germplasm of species considered recalcitrant. However, studies should be performed to achieve maximum survival of seedlings after immersion in liquid nitrogen. The objective of this work was to find a cryopreservation protocol for storing seeds of Coffea canephora, studying two methods of cryopreservation, slow and fast cooling. Seeds were subjected to drying in silica gel up to the water content of 0.25 g g-1. In the first experiment, dried seeds were subjected to treatments of slow cooling at speeds of -1 ºC min-1,-3 ºC min-1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Drying in silica gel; Recalcitrant seeds; Ice crystals; Isoenzymes; Physiological quality.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000600588
Registros recuperados: 3
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