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Free Content Cryopreservation of Quercus robur L. Embryogenic Calli

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Embryogenic calli of pedunculate oak (Quercus robur L.) were cryopreserved using direct immersion in liquid nitrogen. The pretreatment consisted of culture on a solid medium with increasing sucrose concentrations (0.25 M for 1 day, 0.5 M for 1 day, 0.75 M for 2 days, and 1.0 M for 3 days), followed by air desiccation of embryogenic calli to 17.3% (fresh weight basis). This method of cryoprotection was compared to a liquid cryoprotection treatment using high concentrations of sucrose solutions, followed by glycerol solutions. Regrowth of frozen tissue pretreated on a solid medium was significantly higher than those pretreated in the liquid solutions (Fig. 2).

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Keywords: CRYOPRESERVATION; DESICCATION; EMBRYOGENIC CALLI; SOMATIC EMBRYOS; SUCROSE

Document Type: Research Article

Publication date: November 1, 2005

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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