Abstract
Embryogenic cultures of chir pine (Pinus roxburghii Sarg.) were cryopreserved successfully in liquid nitrogen. It was found that using sorbitol and dimethyl sulfoxide (DMSO) as cryoprotectants was essential for the survival of the tissue. Among the different concentrations of the cryoprotectants used, the most effective treatment was observed to be 0.3 M sorbitol and 5 % DMSO. On staining the cryopreserved tissue with fluorescein diacetate, it was observed that only a few meristematic embryo heads survived and resumed growth after a very short initial lag phase. The recovered cultures showed normal regrowth on proliferation medium and, it was also observed that washing off the cryoprotectants was necessary for the cultures to survive. The results indicate that cryopreservation can be used for conserving the germplasm, and in maintaining the embryogenic capacity of the tissue.
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Mathur, G., Alkutkar, V. & Nadgauda, R. Cryopreservation of Embryogenic Culture of Pinus roxburghii . Biologia Plantarum 46, 205–210 (2003). https://doi.org/10.1023/A:1022894409408
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DOI: https://doi.org/10.1023/A:1022894409408