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Articles by Ferdousi Begum
Total Records ( 2 ) for Ferdousi Begum
  S.M. Mahbubur Rahman , Md. Shahidul Islam , Palash Kumar Sen and Ferdousi Begum
  The experiment was conducted at Tissue Culture Laboratory of Development of Biotechnology and Environmental Conservation Centre (DEBTEC), Dhaka, Bangladesh. Axillary buds of Oncidium taka were used as an experimental material for micropropagation. The effect of growth regulators concentrations on morphogenetic development was studied. Axillary bud produced protocorm on MS medium supplemented with combination of BA (0.5-1.5 mg L -1 ) and NAA (0.1-0.5 mg L -1 ). Satisfactory numbers of protocorm were observed at media with 1.0 mg L -1 BA + 0.5 mg L -1 NAA. Subsequent propagation from protocorm was performed on MS medium supplemented with various concentrations of BA or Kn and NAA or IBA. For Shoot proliferation, BA or Kn (1.0-3.0 mg L -1 ) and their combinations along with NAA (0.5-1.0 mg L -1 ) were used. Combination of cytokinin (BA and Kn) and Auxin (NAA or IBA) also obtained higher number of shoots and shoot length than cytokinin alone. The height shoot formation (9.4±1.14) and shoot length (5.1±0.74 cm) was observed at 2.0 mg L -1 BA + 1.0 mg L -1 NAA. For rooting IBA or NAA (0.5-2.0 mg L -1 ) and their combinations (0.5-2.0 mg L -1 ) along with coconut water (5%) were used. The highest numbers of roots were observed at NAA (1.0 mg L -1 )+CW (5%). The plantlets were transferred in the pot and hardened properly.
  Ferdousi Begum , M.A. Kader , M.Y. Sarker , S.M. Raquibullah , M.D. Hossain and Zahid-Al-Rafique
  An experiment was conducted to study the effect of 1000 and 1500 ppm KNap and 2 ppm mixtalol on chlorophyll a, b and carotenoid content of rapeseed leaf. Results showed that chlorophyll a, b and carotenoid content of leaves were positively affected by 1000 ppm KNap and 2 ppm mixtalol but 1500 ppm KNap was failed to show any significant positive effect on chlorophyll content of rapeseed leaf. Two years mean results showed increased chlorophyll a, b and carotenoid content of leaves of rapeseed plant over control following 2 ppm mixtalol and 1000 ppm KNap single and double spray treatments.
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