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Articles by M.R. Ali
Total Records ( 6 ) for M.R. Ali
  Lipika Ghosh , M.S. Alam , M.R. Ali , A.M. Shohael , F. Alam and R. Islam
  The biochemical parameters such as moisture, ash, protein, fat, carbohydrate, Vitamin-C, phenol, pectin and mineral contents of healthy and leaf spot disease infected mulberry (Morus sp.) leaves were analyzed. Most of these nutrient contents in mulberry leaves were affected greatly with the infection of fungi. Total sugar, reducing sugar, non-reducing sugar, starch, moisture, ash, protein and lipid contents were found to be decreased in infected mulberry leaves due to leaf spot disease caused by Cercospora moricola Cooke and these contents were decreased by 8.58, 1.6, 60.09, 20.22, 24.52, 38.16, 33.84 and 40.26%, respectively. Among the contents, only Vitamin-C, phenol, pectin and mineral contents were found to be increased in infected samples over healthy samples and these contents were increased by 90, 84.21, 35 and 39.97%, respectively. The changes of total sugar, reducing sugar, non-reducing sugar, starch, protein, ash and lipid contents decreased remarkably but those of Vitamin-C, phenol, pectin and mineral contents increased significantly in leaves of disease affected mulberry as compared to those in healthy mulberry.
  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.
  A. Habib , M.R. Ali , M.N. Amin and M.M. Rahman
  The present study was undertaken with a view to develop a reproducible protocol for in vitro propagation of white mulberry (Morus alba L.). For this purpose, surface sterilization of the explants from field grown mature plants was done with 0.1% HgCl2 with a treatment duration of 5 minutes for shoot tip and that with 6 minutes for nodal segments. Between the two explants used, nodal explant exhibit comparatively better response to axillary shoot proliferation. Analysis of the results obtained from the proliferation experiment proved that effectiveness of cytokinin BA was better than that of Kn with respect to axillary shoot formation. And that MS medium supplemented with 1.0 mg l G 1 BA was found to be best where 100% of the explants proliferated with the axillary shoots having average length of 5.46 " 0.02 cm and a multiplication rate of 7 fold per 4-week. On the other hand, percentage of root induction and number of roots per shoot were largely affected by the concentration of MS medium and type of the auxins used. The highest percentage (100%) of root regeneration was obtained in half MS medium supplemented with 0.5% mg l G 1 IBA.
  M.M. Rahman , M.N. Amin , T. Ahamed , S. Ahmad , A. Habib , R. Ahmed , M.B. Ahmed and M.R. Ali
  An efficient protocol has been established for rapid production of plantlets using rhizome tip and lateral bud explants of the field grown plant. The explants were cultured on MS medium with auxins (NAA, IBA and IAA) and cytokinins (BA and Kn). Cent percent of the explants produced two or three shoot buds in each culture when they were cultured on MS medium containing 1.0 mg L -1 BA+0.1 mg L -1 NAA within three weeks of culture. The number of shoots per culture increased gradually when the primary cultures were subcultured in two weeks intervals. Highest number of 20.50±1.80 shoots proliferated in each culture when the explants of initially sprouted shoots were subcultured at three times on the same medium. Microshoots were isolated from the in vitro proliferated cluster of shoots produced roots in 100% cases on modified (MMS2) medium supplemented with 0.2 mg L -1 of IBA. Maximum number of 12.4±1.23 roots per microshoot were recorded on the medium containing 0.2 mg L -1 IBA. The regenerated plantlets were acclimatized and established on the soil with eighty five percent success.
  M.S.H. Reza , C. Mandal , K.A. Alam , A. Salam , M.A. Rahman , M.R. Amin , M.N. Huda , N.C. Ghosh , M.R. Ali and F. Ahmed
  The ethanol extract of leaves of Hoya parasitica was tested for its phytochemical groups, antibacterial and antinociceptive activities. The ethanol extract showed the presence of flavonoids, reducing sugars, tannins, gums and saponins. The extract showed moderate antibacterial activity against both gram-positive and gram-negative bacteria. It also produced significant (p<0.01) writhing inhibition in Swiss albino mice at oral dose of 500 mg kg-1 body weight comparable to the standard drug diclofenac sodium.
  M.R. Islam , M.K. Hossain , M.H. Bahar and M.R. Ali
  Naturally infected leaf samples of betelnut having characteristic symptoms of spots were collected from the campus of Khulna University, Bangladesh. The pathogen of this disease was identified on the basis of growth characters, acervuli production and conidial features on PDA medium as Pestalotia palmarum. The species was found pathogenic on excised leaves of the betelnut. Among the six fungicides tested in vitro Bavistin of three doses (100, 200 and 300 ppm) and Tilt 250 EC (100 and 200 ppm) were most effective in inhibiting radial growth of Pestalotia palmarum. Among the seven indigenous plant extracts tested in vitro, two doses (4 and 5%) of garlic (Allium sativum) extracts were found most effective in inhibiting the radial growth of the fungus.
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