Abstract
An efficient protocol was established for the cryopreservation of immature seeds of a terrestrial orchid, Bletilla striata. Immature seeds collected 2–4 months after pollination (MAP) were treated using three different cryogenic procedures: (1) direct plunging into liquid nitrogen, (2) vitrification, and (3) vitrification with preculture. When immature seeds collected 3 MAP and 4 MAP were precultured for 3 days on New Dogashima medium supplemented with 0.3 M sucrose and cryopreserved by vitrification, the survival rate after preservation, as assessed by staining with 2,3,5-triphenyltetrazolium chloride, was 92% and 81%, respectively. Immature seeds thus treated showed no decrease in germination rate relative to untreated immature seeds, and they developed into normal plantlets in vitro.
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Abbreviations
- MAP :
-
Month(s) after pollination
- ND :
-
New Dogashima
- TTC :
-
2,3,5-Triphenyltetrazolium chloride
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Communicated by K.K. Kamo
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Hirano, T., Godo, T., Mii, M. et al. Cryopreservation of immature seeds of Bletilla striata by vitrification. Plant Cell Rep 23, 534–539 (2005). https://doi.org/10.1007/s00299-004-0893-9
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DOI: https://doi.org/10.1007/s00299-004-0893-9