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Articles by F. Begum
Total Records ( 10 ) for F. Begum
  F. Begum , M.N. Amin , S. Islam and M.A.K. Azad
  Nodal segments of in vitro germinated seedlings of three pummelo varieties [Var.-1 (pulp is pink colour), Var.-2 (pulp is white colour) and Var.-3 (pulp is red colour)] were cultured on half-strength MS medium for axillary shoot proliferation. A large number of shoot buds were produced when such four weeks old culture were subcultured on half-strength MS medium containing 1.0 mg l-1 BAP. Roots were induced when the isolated individual shoots were cultured on half-strength MS medium containing 0.1 mg l-1 each of NAA, IBA or IAA. Cent percent root were observed on half-strength MS medium having 0.1 mg l-1 NAA. These in vitro grown plantlets were then successfully transferred to outside natural condition through successive phases of acclimatization. About 93% of the regenerated plantlets survived under ex vitro condition.
  M. A. Rahman , F. Begum and M. S. Islam
  A total of 330 water samples obtained from different sources in three different seasons were examined for the evidence of bacterial pollution and physico-chemical properties of water. The densities of total coliforms ranged from 0-6 to $ 2400, fecal coliforms 0-2 to $ 2400 and total bacterial count (log10) 0.07-0.42 to 3.95-8.91 per 100 ml. of water samples of different seasons. The degree of pollution was the highest in pond for public use in all seasons and the lowest in deep tubewell in winter and aqua mineral. E.coli, Fe.Streptococci, Salmonella and Shigella were found highest 80, 58, 46 and 58% respectively in water of ponds for public use irrespective of season. No Salmonella and Shigella were detected in deep tubewell and aqua mineral. The physico-chemical parameters of water were determined.
  M. S. Islam , F. Begum and M. S. Alam
  Comparative efficacy of Aldazole, Fenvet and Ivomec Injection were investigated against natural infection with gastrointestinal nematodes of goats in Bangladesh. Ivomec injection showed maximum efficacy of 100% followed by Fenvet (95.35%) and Aldazole (90.11%) on the basis of reduction of faecal EPG recorded. The haematological studies at post treatment day [email protected] shown that TEC (million/cu mm), Hb (gm%) and PCV (%) were significantly increased (P<0.01) than that of pretreatment day [email protected] but ESR (mm 1hr-1) was decreased upto 100% in goats.
  F. Begum , M. S. Islam , M. A. Rahman and H. Rahman
  A total of 90 water samples obtained from various sources (tubewell, reservoir tank, tap supply, pond, river and aqua mineral) collected in three seasons were examined for their water quality based on total bacterial count and physico-chemical properties. The combined effect of physico-chemical properties of water on the growth and propagation of bacteria was highly significant (P<0.01) in pond and river water and very poor and insignificant (P<0.05) in tubewell, reservoir tank, tap and aqua mineral water. One hundred sixty four isolates of enteric bacteria including Escheria coIi, fecal Streptococci, Salmonella and Shigella were examined for their sensitivity to antibiotics. The study revealed that 7.0 to 32% of isolates were resistant to tetracycline followed by ampicillin and streptomycin. Resistance to Chloramphenicol was of moderate degree (3 to 14%) and that to Ampicillin, Kenamycin and Gentamycin was relatively low (0.82 to 7.02%). E. coli possessed the highest antibiotic resistance and was most widespread among the bacterial isolates obtained from pond water.
  M.Y. Sarker , M. Mosaddeque Hossain , M.K. Hasan , M.A.H. Khan , M.R. Amin and F. Begum
  The experiment was conducted to determine the weed vegetation due to the effect of planting methods and weeding regime. Two factors included in the experiment were: methods of planting and weeding regime. The results revealed that weed vegetation in the two methods of planting varied remarkable. Fifty-five weed species belonging to 17 families infested the crop. Among the weed species, Fimbristylis miliacea (L.) Vahl was the principal weed in direct seeded aus rice and Panicum repens L. in the transplanted aus rice. Twenty-four weed species were found to grow only in the direct seeded crop and only eight in the transplanted crop. Weed density and weed dry weight was significantly affected by the method of planting and weeding regime. Weed density and dry weight was significantly higher in direct seeded than in transplanted crop.
  M.A.K. Azad , M.N. Amin and F. Begum
  The proliferating axillary shoot cultures were established on MS medium supplemented with different concentrations of cytokinins and auxins, using nodal explants from the field grown mature plant of A. vasica. In vitro response of the explants to multiple shoot regeneration varied greatly with the position of the explanting branch on the donor plant. Highest frequencies of shoot formation and maximum number of shoots per explant were obtained on MS medium supplemented with 0.5 mg/l BA. The elongated shoots were rooted successfully on half strength of MS medium with 0.1-0.2 mg/l IBA or without any auxin. The complete plantlets thus regenerated in vitro were successfully transferred to the field.
  M.Z. Karim , M.N. Amin , M.A.K. Azad , F. Begum , M.M. Rahman , M.M. Islam and R. Alam
  Shoot multiplication of Chrysanthemum morifolium was achieved from the nodal and shoot tip explants of mature plant using MS medium with different concentrations and combinations of growth regulators. Maximum frequency of explants produced axillary shoot and the highest number of shoots per explant were obtained when MS medium fortified with 1.0 mg l-1 BAP.The combination BAP+GA3 was found effective result. But Kinetin (Kn) showed low performance for producing multiple shoots. The degree of shoot formation was affected by explant types and the exogenous hormonal regime in the medium.
  M.M. Rahman , M.N. Amin , M.A.K. Azad , F. Begum and M.Z. Karim
  Leaf segments from field grown mature plants of Elaeocarpus robustus Roxb. were used to initiate cultures for inducing callus and subsequent differentiation of shoot buds. Callus production was obtained within seven weeks and adventitious shoot formation was observed after five weeks of incubation on ½ MS medium supplemented with 0.5 mg l-1 BA + 0.1 mg l-1 NAA + 15% CW. Complete plantlets were obtained upon transfer of shoot cuttings on ½ MS with 0.1-2.0 mg l-1 IBA, NAA, IAA or without any auxin. The best and healthy rooting was observed on ½ MS medium supplemented 0.2 mg l-1 IBA. In vitro regenerated plantlets were transferred to potting soil and successfully established under natural condition with about 60% survival.
  F. Begum , M.N. Amin , S. Islam , M.A.K. Azad and M.M. Rehman
  Cotyledon explants from in vitro grown seedlings were cultured on half-strength of MS medium with different growth regulators for in vitro indirect regeneration of shoots. Optimum callus formation, when cotyledon explants were cultured on MS containing 1.0 mg l-1 BAP with 5.0 mg l-1 NAA. After that the calli were used for shoot regeneration by transferring them half-strength MS medium supplemented with only cytokinin. Maximum percentage of shoot regeneration was obtained on half strength MS medium in the presence of 1.0 mg l-1 BAP from callus in three varieties [Var.-1 (pink colour), Var.-2 (white colour) and Var.-3 (red colour)] of pummelo. For rooting, shoot cuttings were cultured on half strength MS salts with 0.1-1.0 mg l-1 NAA, IBA or IAA. The best and healthy rooting was observed on 0.1 mg l-1 NAA. The plantlets of three varieties were successfully established on soil. About 95% of plantlets survived under ex vitro condition.
  M.M. Rahman , M.N. Amin , R. Ahmed , M.A.K. Azad and F. Begum
  Regeneration of multiple shoots via callus induction and organogenesis were achieved in native-olive (Elaeocarpus robustus). Callus induction and shoot buds regeneration were obtained from internode explants of Elaeocarpus robustus on their sufficient medium. The best organic callus was found on modified MS (MMS1) medium supplemented with 0.5 mg L1 BA+0.5 mg L1 2,4-D. Development of adventitious shoots occurred when the calli were subcultured on MMS1 medium supplemented with BA and NAA. Maximum frequency (80%) of calli induced adventitious shoots with highest number of 14.05 ± 1.56 shoots per callus were obtained when the medium was fortified with 1.0 mg L1 BA+0.1 mg L1 NAA. Plantlets developed roots when in vitro developed microcuttings were implanted on modified MS (MMS2) medium with 0.2 mg L1 of IBA. Within six weeks of transfer, 65% rooting was achieved on this medium. Rooted shoots (plantlets) were gradually acclimatized and successfully established under natural condition with about 50% survival rate.
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