Abstract
Chrysanthemum species are grown both as ornamentals and for the production of pyrethrum. Recent increased production and breeding efforts have raised the need for the conservation of valuable germplasm. Chrysanthemum has been cryopreserved by controlled-rate-freezing as early as 1990. We report here deep-freezing of shoot tips of C. morifolium var. Escort by different technical procedures: controlled-rate-freezing, encapsulation/dehydration, ultra-rapid-freezing by the droplet method and vitrification. While vitrification yielded the highest shoot regeneration rates, the very simple droplet method was also successful in this respect. Droplet freezing was successfully performed with nine cultivars. Our results open the door to the successful use of alternative methods if one method fails to cryopreserve a variety. Furthermore, it enables comparative investigations of genetic stability and cyro-injury to be carried out.
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Abbreviations
- BA :
-
6-Benzylaminopurine
- NAA :
-
α-Naphthaleneacetic acid
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Acknowledgements
The work of Dr. Adela Halmagyi at DSMZ was supported by a Roman-Herzog-Grant of the Humboldt Foundation
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Communicated by H. Lörz
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Halmagyi, A., Fischer-Klüver, G., Mix-Wagner, G. et al. Cryopreservation of Chrysanthemum morifolium (Dendranthema grandiflora Ramat.) using different approaches. Plant Cell Rep 22, 371–375 (2004). https://doi.org/10.1007/s00299-003-0703-9
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DOI: https://doi.org/10.1007/s00299-003-0703-9