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Tom 13 Nr 2 (2014)

Artykuły

IMPROVEMENT OF Chrysanthemum × grandiflorum (Ramat.) Kitam. ENCAPSULATION-DEHYDRATION CRYOPRESERVATION PROTOCOL

Przesłane: 23 listopada 2020
Opublikowane: 2014-04-30

Abstrakt

To optimize the protocol, the shoot tips of Chrysanthemum × grandiflorum (Ramat.) Kitam. radiomutants have been cryopreserved using the encapsulationdehydration technique, following different approaches. In the experiment the influence of abscisic acid – ABA (0; 10; 20 and 30 μM), sucrose concentration (0.09; 0.25 and 0.5 M) and temperature (5ºC or 22ºC) during preculture were tested. Furthermore two dehydration methods, gradual and one-step, were considered. Since the best results were reported with 10 μM ABA + 0.09 M sucrose at room temperature and gradual dehydration, only this combination was selected for the next desiccation-adjustment step. From the time of air desiccation under laminar air-flow applied (0; 1; 2; 3; 4 and 5 hours), 3 hours provided
the best results. Due to the growth inhibition on the hormone-free medium, the addition of plant growth regulators during that phase was also tested, confirming the need to apply cytokinins into the medium.

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