Abstract
Various components of culture media were tested to characterize factors affecting plantlet regeneration from rice (Oryza sativa L.) callus. It was found that plantlet regeneration from rice callus was affected by concentrations of gelling agents, osmoticum, and the combination of hormones in the regeneration medium. High concentrations (4–6 g/l gellan gum, 10–16 g/l agar) of gelling agents promoted regeneration frequency. However, the total number of plantlets decreased with gellan gum concentrations above 4 g/l. Addition of sorbitol (15–75 g/l) promoted plantlet regeneration. However, the addition of mannitol was inhibitory and no regeneration was observed at concentrations above 30 g/l. This difference in the effects on regeneration suggests that sorbitol had another function besides as a osmoticum. High regeneration frequency was obtained with combinations of NAA (0.05–0.5 g/l) and kinetin (0.5–2 mg/l). However, higher concentrations (2 mg/l) of NAA are preferred to increase the total number of regenerated plantlets.
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Tsukahara, M., Hirosawa, T. Characterization of factors affecting plantlet regeneration from rice (Oryza sativa L.) callus. Bot Mag Tokyo 105, 227–233 (1992). https://doi.org/10.1007/BF02489417
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DOI: https://doi.org/10.1007/BF02489417