Protoplasts were isolated from callus tissue of Hibiscus syriacus L. using a solution of 3% Onozuka cellulase, 1% Onozuka macerozyme, and 0.5% hemicellulase. Highest yields of viable protoplasts were obtained from friable, white or yellow callus 8–9 days after subculture on Murashige & Skoog medium with 0.5 mg l-1 2,4-dichlorophenoxyacetic acid and 0.1 mg l-1 kinetin. Protoplasts cultured in thin liquid layers of this medium with mannitol continued dividing for longer than those cultured in droplets or in an agar medium. Cultures were maintained until protoplasts had divided to form groups of more than ten cells. Cell groups developed into callus and continued to grow on an agar medium, but failed to differentiate on a regeneration medium with 2 mg l-1 naphthalene acetic acid and 1 mg l-1 benzylaminopurine.
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Yan-Xiu, Z., Dun-Yi, Y. & Harris, P.J.C. Isolation and culture of protoplasts from callus tissue of Hibiscus syriacus L.. Plant Cell Tiss Organ Cult 25, 17–19 (1991). https://doi.org/10.1007/BF00033907
- Hibiscus syricus L.
- protoplast culture