High Frequency Regeneration of Plantlets from Immature Male Floral Explants of Musa paradisica cv. Puttabale - AB Genome

Abstract

High frequency in vitro regeneration for mass multiplication from immature male floral explants of Musa paradisica cv. Puttabale on MS supplemented with adenine sulfate (160 mg/l), tyrosine (100 mg/l), sucrose (40 g/l) and gelled with 0.8 g/l agar was attempted.  For callus induction the combinations of 2, 4-D and BAP were tested at 1.0 - 10.0 mg/l and 0.5 - 5.0 mg/l, respectively. For shoot bud formation combinations of BAP and TDZ were also tested at 1.0 - 5.0 mg/l and 0.1 - 0.5 mg/l, respectively.  Luxuriant proliferation and high frequency induction (97.0%) of  callus  was  noticed from the  accessory  floral  part  of  the  explant  at

7.0 mg/l 2, 4-D and 1.0 mg/l BAP, later it preceded towards the gynoecium. Interaction of BAP (2.0 5.0 mg/l) and TDZ (0.2 - 0.5 mg/l) would provoke high frequency shoot bud differentiation from the floral calli and a mean of 29.40 ± 6.10 shootlets per callus was obtained at 4 mg/l BAP and 0.4 mg/l TDZ. Rooting of the microshoots was achieved on MS containing 0.6 mg/l NAA and 0.2% activated charcoal.

Key words: Musa pardisica, Puttabale, Regeneration, Male floral explants.

D. O. I. 10.3329/ptcb.v21i2.10243

Plant Tissue Cult. & Biotech. 21(2): 199-205, 2011 (December)