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Articles by M.F. Alam
Total Records ( 5 ) for M.F. Alam
  M.G. Ahmed , M.F. Alam , M. Nuruzzaman , A.M. Shohael , M. Nasiruddin and M.M. Hossain
  Nutrient film technique and sand culture were tested for the year round production of tomato in Bangladesh. Two cultivars of tomato viz., Egg tomato and Kingkong were tested for growth in both winter (November 2000-February 2001) and summer (May 2001-August 2001) seasons in NFT (Nutrients Film Technique) and sand culture. Sand culture was more simple to establish and manage incurved lowed cost compared to NFT system, however higher production was observed in NFT system. Egg tomato was found to be suitable for growth in summer, where as winter was suitable for Kingkong tested NFT and sand culture.
  Ahsan Nagib , S.A. Hossain , M.F. Alam , M.M. Hossain , R. Islam and R.S. Sultana
  In order to produce virus free potato tuber seeds in vitro culture was established using apical meristem of four widely cultivated varieties of Bangladesh namely Diamant, Cardinal, Multa and Lalpakri. Meristem of these varieties of potato were cultured for shoot proliferation and root induction in MS and MS0 medium supplemented with different types and concentration of phytohormones. Among the different growth regulator formulations, 0.5 mg l-1 GA3+0.04 mg l-1 KIN was found to be the best medium for the primary establishment of meristem. The primary established meristems were subcultured on to MSo medium and MS medium containing BA and IBA singly or in combinations. Considering all the treatments singly use of IBA (0.5 mg l-1) is recommended for proper shoot and root development from primary meristem. After DAS-ELISSA test the virus free in vitro grown potato plantlets were using for massive micro propagation. GA3 and KIN singly or in combinations are used for shoot and root multiplication, among all these combinations 2.0 mg l-1 GA3 was found to be the best media for shoot induction for the studied varities. For high frequency of root formation, combination of GA3 (0.1 mg l-1)+KIN (0.1 mg l-1) was most effective. Rooted plantlet were gradually acclimatized and successfully established in the field. Visual evolution of the morphological trials of the tissue culture derived plants showed all plants were found normal and free from virus diseases. Substantial yield increase was observed in meristem derived plants over their source plants.
  S.A. Haider , M.Z. Alam , M.F. Alam and N.K. Paul
  A field investigation was carried out to study the influence of sowing dates on phenology and accumulated heat units of four cultivars of bread wheat (Triticum aestivum L.) at different phenological stages over two growing seasons. There were two sowing dates: early and late. The late sown plants had significantly shorter phenological stages and lower growing day degree than the early sown plants in all the four cultivars. Cultivars Akbar was found to be early and C 306 was found to be late maturing. Akbar had the lowest and C 306 had the highest growing degree days during all the phenological stages under each irrigation regimes. Heliothermal units also showed more or less the same trends. The phenothermal indices and heat use efficiency were found to be higher in the early sown plants than the late sown plants.
  M. Khalekuzzaman , M.F. Alam and M. Nuruzzaman
  Averrhoa carambola Linn. was micropropagated from nodal explants through axillary branching on MS medium supplemented with benzyladenine (BA) and Kinetin, Maximum numbers of shoots per explant were obtained on MS medium supplemented with 1.0 mg L-1 each of BA and Kinetin. Subculturing of regenerated shoots in MS medium having low concentration of BA (0.1 mg L-1) stimulates shoot elongation. Regenerated shoots were rooted by treating them with auxins and best root induction (70%) was observed in half-strength MS medium supplemented with 0.5 mg L-1 indole-3-butyic acid (lBA). Rooted plantlets were successfully established in soil.
  Lipika Ghosh , N. Ahsan , S. Parvez , A.M. Swaraz , M.R. Khan , M.R. Ali and M.F. Alam
  Leaf spot disease incidence caused by Cercospora moricola Cooke was studied on five high yielding and a local variety of mulberry during the months of May to September in 2000, 2001 and 2002. Leaf infection was observed in those years. Percentage of disease incidence was calculated against Cercospora leaf spot disease in five high yielding and one local varieties. Among the six varieties the local one was found to be highly susceptible to Cercospora where the highest disease incidence (55.60%) around three years was recorded. BM-4 (16.97%) and BM-5 (18.46%) were found to be moderately resistant. On the other hand BM-1 (27.83%), BM-2 (29.82%) and BM-3 (36.99%) were identified as moderately susceptible to leaf spot disease.
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