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Articles by M.A.I. Khan
Total Records ( 3 ) for M.A.I. Khan
  M.A.I. Khan , M. S. Hossain , M.A. Rahman , S.M. Jobair Hossain and G.M. Mujibar Rahman
  The effectiveness of solar heat in controlling seed borne fungal infections of wheat was tested by drying of seeds on concrete floor, brown paper and mixing with sand (50:50) for 0, 4, 8 and 12 hours. It was observed that the seeds dried with sand mixture always yielded lowest number of seed borne infections of all the fungi followed by concrete floor and brown paper. Reduction rate of fungi achieved in all the treatments differed significantly from that of control. Twelve hours was the best period in inhibiting the seed borne infections. However, in some cases both 12 and 8 hours treatments behaved equally. Reduction of total seed borne infection and increase in seed vigour positively correlated with the increase in drying period. Therefore, to minimize the seed borne infections, it would be advisable to use seed dried with sand mixture for 12 hours under direct solar heat.
  M.A. Rahman , M.A.I. Khan , S.M. Jobair Hossain , M. S. Hossain , M.A. Hossain and S.S. Haque
  The chromosomes were identified individually and standard karyotype of Lycopersicon esculentum cv. Oxheart was formulated. Roots were collected from germinating seeds and were pre-treated in a saturated aqueous solution of monobromonaphthalene. After iron-alum mordanting, standard hematoxylin method was followed. 2n = 24 chromosomes were found. Karyotype analysis was carried out following a quantitative method using scatter diagram technique. Only two chromosomes were identified individually and the rest were morphologically characterized. One of the two identified chromosomes had mean total length 3.1μ and mean arm ratio 1.3 whereas, the other one had mean total length 2.5μ and mean arm ratio 2.0. The length of the prometaphase chromosomes ranged from 1.3 to 3.1μ. The karyotype of the studied tomato genotype consists of 8 metacentric and 4 sub-metacentric chromosomes. One pair of satellited chromosomes was also observed.
  B.C. Roy , M.A. Hossain and M.A.I. Khan
  The experiment was conducted to findout the transplanting effects on growth and yield of five modern varieties and to identify suitable varieties for late T. Aman season during 2000 and 2001. The varieties used were BR23 and BRRI dhan33, BRRI dhan37, 38 and 39. Results showed that the planting rice in the month of August was found to be very much risky due to tidal water pressure which mostly led to total crop damage. Early September was the suitable transplanting time of modern varieties for higher grain yield. The results indicated that the varieties like BR23, BRRI dhan 37 and 38 could easily be transplanted up to the 4th week of September with a reasonably higher yield of about 3 t ha 1 in the southern region (tidal non-saline area) of Bangladesh.
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