Abstract
A study was undertaken to develop a protoplast regeneration system for pinellia. A yield of 19 29 x 105 protoplasts/g F. W. could be obtained from cell suspension cultures incubated in a digestion enzyme solution with 2% cellulase Onzuka R-10, 10% pectinase (Sigma), 0.01% pectolyase Y23. K8P and modified MS media were used to culture protoplasts in: a) liquid, b) liquid-solid double layer, or c) agarose embedded protoplast culture. The former two were conducive to colony formation from protoplast-derived cells. The frequency of cell division was about 8% after 3 days in culture. Gradually adding fresh medium of lower osmotic pressure into the medium for protoplast culture favored cell division. Calli (1–2 mm in diameter) formed after 30–40 days in culture. The calli transferred onto medium supplemented with KT (0.5 mg 1−1) and NAA (0.2 mg 1)−1) could regenerate plants after 40–50 days. Of 47 plantlets transplanted into plots, 29 flowered and were fertile.
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Abbreviations
- 2,4-D:
-
2,4-dichlorophenoxyacetic acid
- NAA:
-
α-naphthaleneacetic acid
- KT:
-
kinetin
- CH:
-
casein hydrolysate
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Communicated by W Parrott
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He, Y., Zhu, C., He, M. et al. Protoplast culture and plant regeneration ofPinellia ternata . Plant Cell Reports 16, 92–96 (1996). https://doi.org/10.1007/BF01275458
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DOI: https://doi.org/10.1007/BF01275458