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Article in Chinese | WPRIM | ID: wpr-485506

ABSTRACT

Objective To explore the effect of different factors on strengthening the tissue culture seedlings and roots of Dendranthema morifolium ( Ramat) Tzvel. cv. Gongju, so as to provide experimental basis for establishing an in-vitro rapid propagation system of Dendranthema morifolium. Methods The experiment took Dendranthema morifolium ( Ramat) Tzvel. cv. Gongju tissue culture seedling as the studying object. By using tissue culture technology, different additives were added into the MS medium. Results In the seedling-strengthening culture medium, 150 mL/L of macro-element was beneficial to the growth of tissue culture seedlings of Dendranthema morifolium ( Ramat) Tzvel. cv. Gongju. The culture medium with 100 g/L of coconut milk added could obviously promote the growth of Dendranthema morifolium ( Ramat) Tzvel. cv. Gongju tissue culture seedlings. And activated carbon added to the rooting culture medium could induce the formation of tissue culture root system of Dendranthema morifolium ( Ramat) Tzvel. cv. The addition of α-naphthaleneacetic acid ( NAA) and indolebutyric acid ( IBA) at certain concentrations could promote the amount and the growth of the roots. Conclusion The tissue culture seedlings of Dendranthema morifolium ( Ramat) Tzvel. cv. Gongju are boosted by increasing the amount of macro-element, reducing the concentration of agar in the culture medium and adding coconut milk and growth hormones to the culture medium. The optimal rooting culture medium is a compound of 1/2MS, NAA 0.05 mg/L and IBA 0.05 mg/L.

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