Abstract
The communication describes standardization of an efficient in vitro propagation and hardening procedure for obtaining plantlets from field grown culms of Bambusa tulda. Administration for 10 min of 0.05 and 0.1% mercuric chloride to explants collected in winter and summer seasons, respectively facilitated optimum culture establishment and bud break. 0.1–0.2% mercuric chloride in rainy season enhanced aseptic culture establishment but inhibited bud break due to toxicity to explants. MS liquid medium enriched with 100 μM glutamine, 0.1 μM indole-3-acetic acid and 12 μM 6-benzylaminopurine supported maximum in vitro shoot multiplication rate of two-fold. The proliferated shoots were successfully rooted on MS liquid medium supplemented with 40 μM coumarin resulting in a maximum of 98% rooting. The procedure requires 45 days cycle for the in vitro clonal propagation (15 days for shoot multiplication and 30 days for root induction) and 80 days for acclimatized plantlet production.
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