Cengiz SANCAK, Derya ÇAKMAK, Cuma KARAOĞLU, Sebahatin ÖZCAN, Muhammed A. ASIM

Advancement in protocol for in vitro seed germination, regeneration, bulblet maturation, and acclimatization of Fritillaria persica

The present study addressed the successful in vitro seed germination, bulblet regeneration, increased bulblet size, hardening, and acclimatization of Persian lily (Fritillaria persica). Seed germination rate was recorded as 86.7% and 96.7% after 2 and 3 months of cold treatment at 4 °C, respectively. Bulblet explants taken from a germination experiment were cultured on Murashige and Skoog (MS) medium supplemented with 0.5-2.0 mg/L thidiazuron (TDZ). Maximum bulblet regeneration frequency and bulblets per explants were achieved on a medium containing 2.0 mg/L TDZ. Leaf disc and leaf scale explants isolated from germinated seedlings were also cultured on MS medium containing 2-6 mg/L 2,4-dichlorophenoxyacetic acid (2,4-D) with a constant concentration of 0.2 mg/L kinetin. Both explants yielded the highest bulblet regeneration on MS medium containing 2 mg/L 2,4-D and 0.2 mg/L kinetin. A combination of 1.5 g/L agar and 1.6 g/L GELRITE resulted in a maximum bulblet diameter with a higher number of roots. The addition of 10 g/L NaCl to the culture medium resulted in the best root and leaf formation and secondary bulblet regeneration. Exposure of regenerated bulblets to 10 g/L NaCl at 4 °C for 2 months on a medium with 20 g/L sucrose was also found to be beneficial for acclimatization.

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