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  • 1
    Electronic Resource
    Electronic Resource
    Cryopreservation of Doritaenopsis suspension culture by vitrification (2000)
    Springer
    Plant cell reports 19 (2000), S. 1160-1164 
    Details
    ISSN: 1432-203X
    Keywords: KeywordsDoritaenopsis ; Cryopreservation ; Abscisic acid ; Protocorm-like body ; Abbreviations ABA: Abscisic acid ; BA6: Benzylaminopurine ; DMSO: Dimethylsulphoxide ; NAA: Naphthaleneacetic acid ; ND: New¶Dogashima ; PLB: Protocorm-like body ; TTC: 2,3,5-Triphenyltetrazolium chloride
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Cells of a suspension culture of Doritaenopsis cv. New Toyohashi were placed in a mixture of 2 M glycerol and 0.4 M sucrose for 15 min at room temperature and then dehydrated with a vitrification solution (PVS2) for 1–3 h on ice and plunged into liquid nitrogen. The highest viability (64% by 2,3,5-triphenyltetrazolium chloride stainability) was obtained when the cells were precultured in liquid New Dogashima medium with 0.1 M sucrose and 1.0 mg/l abscisic acid for 1 week at 25  °C in the light. Dehydration by PVS2 was important for the cryopreservation of Doritaenopsis cells. Protocorm-like bodies were induced from cryopreserved cells without morphological variations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990000255
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  • 2
    Electronic Resource
    Electronic Resource
    Cryopreservation of zygotic embryos of a Japanese terrestrial orchid (Bletilla striata) by vitrification (1997)
    Springer
    Plant cell reports 16 (1997), S. 754-757 
    Details
    ISSN: 1432-203X
    Keywords: Key wordsBletilla striata ; Cryopreservation ; Embryo ; Orchid ; Vitrification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The seeds of a Japanese terrestrial orchid (Bletilla striata Rchb.f.) were germinated and cultured on solidified new Dogashima (ND) medium for 10 days. These embryos were then precultured on ND medium supplemented with 0.3 m sucrose for 3 days at 25°C in continuous dark. The embryos were then overlaid with a mixture of 2 m glycerol and 0.4 m sucrose for 15 min at 25°C and finally dehydrated with highly concentrated vitrification solution (PVS2) for 3 h at 0°C prior to immersion into liquid nitrogen for 30 min. After rapid warming, the embryos were washed with liquid ND medium supplemented with 1.2 m sucrose for 20 min and then plated on ND medium. Successfully vitrified and warmed embryos developed into normal plantlets. The rate of plant regeneration amounted to about 60%. This vitrification method appears to be a promising technique for cryopreservation of orchids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990050314
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    Paper (German National Licenses)
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