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Survival of somatic embryos and recovery of plants of sweet orange (Citrus sinensis (L.) Osb.) after immersion in liquid nitrogen

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Abstract

Somatic embryos of ‘Washington Navel’ sweet orange (Citrus sinensis (L.) Osb.) derived from in vitro cultured ovules excised from immature fruits, were frozen to the temperature of liquid nitrogen. A method of slow cooling at a rate of 0.5°C min-1 down to −42°C followed by storage in liquid nitrogen was used. Thawing was achieved by keeping the specimens at room temperature for 15 min. A small number of frozen embryos survived and developed into proliferating cultures that produced whole plants. The plants obtained from frozen cultures were transferred to soil and are growing successfully.

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Marin, M.L., Duran-Vila, N. Survival of somatic embryos and recovery of plants of sweet orange (Citrus sinensis (L.) Osb.) after immersion in liquid nitrogen. Plant Cell Tiss Organ Cult 14, 51–57 (1988). https://doi.org/10.1007/BF00029575

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  • DOI: https://doi.org/10.1007/BF00029575

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