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Articles by M. R. Alam
Total Records ( 2 ) for M. R. Alam
  M. N. Amin , Shahrear Ahmad , S. Sultana , M. R. Alam and M. A. K. Azad
  The cultures of proliferating axillary shoots were established on MS medium with different concentrations of either BA alone or in combinations of BA with NAA or IBA and with shoot explants from field grown mature plant of Ixora fulgens. Nodal segments were found to be the best explants for axillary shoot formation on agar gelled MS medium with 0.5 mg l -1 BA+0.1 mg l -1 NAA. On this medium axillary buds showed sprouting within two weeks of incubation. By sequential reculturing and subculturing 15-20 usable shoots (>1 cm length) could be produced from the 2-node shoot segments after 12-15 weeks of culture. Microcuttings taken from In vitro proliferated shoots were rooted on ½ strength MS medium having 0.1-0.5 mg l -1 of either NAA, IBA and/or IAA. It was found that 90% of the plantlets could be established under Ex vitro conditions when they were transferred on specially made plastic tray containing coco-peet as potting mix.
  A.K.M. Anowarul Hoque , M. R. Alam , Md. Nazrul Islam , M.K. Anam , M. Asad-ud-doullah and M.M. Hossain
  The study was conducted to determine the effect of seed cleaning and washing on the incidence of bacterial leaf blight (BLB) of rice cv. BR11. Six different treatments were used. They were farmer`s seeds clean seeds, diseased seeds, farmer`s seeds washed with tap water, farmer`s seeds washed with 20% brine solution and clean seeds washed with tap water. Three seed health testing methods namely paper rolled towel, cassette slide holder and liquid assay method were used for detection of BLB infection in seed. Seed health both before sowing and freshly harvested seeds from six different treatments were determined. Seedling vigour of clean seeds and brine solution washed seed were also higher than farmer`s seed and diseased seed. Xanthomonas oryzae pv. oryzae was identified through physiological, biological, serological, hypersensitive reaction and pathogencity tests in seeds of all treatments. Incidence of BLB in field plots were recorded at tillering stage and flag leaf stage. Maximum and minimum BLB disease was recorded in diseased seeds and brine solution washed seeds respectively for both situation.
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