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Articles by Md. Rezuanul Islam
Total Records ( 4 ) for Md. Rezuanul Islam
  M.A. Mamun , M.B.H. Sikdar , Dipak Kumar Paul , M. Mizanur Rahman and Md. Rezuanul Islam
  In vitro micropropagation of sugarcane variety viz., Isd-28 and Isd-29 have been studied. Nutrient media containing growth regulators enhanced callus induction, shoot differentiation and root formation in vitro. For covenant experiment, surface sterilization of the explants from the field grown plants was essential and sterilization with 0.1% HgCl2 for 8 min was satisfactory. In this treatment, 85-90% of the leaf sheath explants was Contamination free. Among the explants cultured for proliferation fortified with 3.0 mg L-1 2, 4-D explants of all the 2 varieties of sugarcane showed the best performance for the callus induction after 16-20 days of culture. The concentration of BA tested 1.5 mg L-1 of the cytokinin produced comparatively higher percentage of shoot proliferation. Different concentration of BA mg L-1 in combination with different auxin viz., IAA, IBA and NAA were tested for shoot proliferation. Isd-28 and Isd-29 showed best shooting when media were supplemented with BA 1.5 mg L-1+0.5 mg L-1 NAA. In vitro proliferated shoots were rooted on MS and modified MS media. Best results of rooting ware observed on modified MS medium supplemented with auxins (NAA+IBA) 0.5 mg L-1 and 0.5 mg L-1 showed fair results. Eighty to ninety percent regenerated plantlets were viable at normal temperature with 85% humidity while transferred sterilized soil.
  Md. Rezuanul Islam , Md. Matiur Rahman , Dipak Kumar Paul and Shaheen Sultana
  Present investigation was carried out on two quantitative characters of the mulberry silkworm, Bombyx mori L. viz., total number of eggs laid per female and filament length of treated eggs with four doses (Control, 2.0, 2.5, 3.0%) of N-nitroso-N-ethylurea (NEU) under the following experiments: Genetic variability, heritability and genetic advance were estimated in different doses separately. A wide range of variation was recorded for both the characters and the major portion of the total variance was inherited with the phenotypical variance. The maximum heritability was recorded for total number of eggs laid per female and filament length showed a high genetic advance at all the doses. A high heritability with high genetic advance was also noted for the total number of eggs laid per female and filament length at all the doses.
  Md. Rezuanul Islam , Md. Abdul Ohayed Ali , Dipak Kumar Paul , Shaheen Sultana , Nilufa Akhter Banu and Md. Rafiqul Islam
  The present investigation deals with the effect of nickel chloride supplementation on the growth of Bombyx mori L. (Lepidoptera: Bombycidae). The weights of mature Bombyx mori L. larvae were 1522.10 ± 78.97, 1579.67 ± 61.29, 1685.13 ± 61.77, 1781.60 ± 66.62, 1801.60 ± 60.69 and 1426.07 ± 89.48 mg for nickel chloride at 0 (Control), 100, 200, 400, 800 and 1600 ppm, respectively. The weights of male and female pupae were 648.03 ± 37.97 and 763.57 ± 55.44, 667.50 ± 51.10 and 774.23 ± 54.33, 682.60 ± 61.78 and 811.47 ± 61.13, 712.23 ± 42.46 and 841.33 ± 63.04, 746.77 ± 45.73 and 871.30 ± 50.47, 618.40 ± 30.61 and 713.70 ± 63.16 mg for nickel chloride for above applied doses. The weights of male and female adults were 300.67 ± 70.07 and 546.27 ± 61.67, 317.63 ± 42.98 and 559.50 ± 76.87, 331.90 ± 48.93 and 571.50 ± 80.46, 352.00 ± 55.14 and 597.67 ± 56.53, 373.17 ± 46.53 and 645.23 ± 55.34, 283.40 ± 43.89 and 514.27 ± 75.83 mgs for nickel chloride for above applied doses. The weights of male and female cocoons were 752.07 ± 31.70 and 87.17 ± 55.50; 769.23 ± 49.84 and 889.10 ± 50.40, 795.53 ± 61.69 and 937.10 ± 59.70, 841.33 ± 42.25 and 970.53 ± 62.33, 856.93 ± 48.50 and 979.63 ± 44.09, 717.27 ± 32.13 and 822.13 ± 64.96 mg for nickel chloride at 0(Control), 100, 200, 400, 800 and 1600 ppm, respectively. The results were statistically significant (P<0.001) among the concentrations. From the above results it may be concluded that nickel chloride can be used at low concentrations for enhancing the economic character of silkworm, Bombyx mori L.
  Md. Rezuanul Islam , D.K. Paul and Ranajit Kumar Shaha
  Fifteen different kinds of leafy vegetables were investigated for the content of moisture, ash, protein, fat, carbohydrate and dietary fiber. Among all leafy vegetables the lowest value of moisture content in Jute leaves (Corchorus olitorius L.) 76.52 g 100 g-1 and the highest value Pui leaves (Basella alba L.) 92.44 g 100 g-1, respectively. Ash content in leafy vegetables varied between 0.9 to 1.8 g 100 g-1. Among leafy vegetables the lowest value of fibre content in Bengal germ leaves (Cicer arietinum L.) 5.57 g 100 g-1 and the highest value Jute leaves 10.8 g 100 g-1, respectively. From the present results protein, fat and carbohydrate contents in different leafy vegetables varies from 1.67 to 6.5, 0.09 to 1.5 and 3.3 to 12.57 g 100 g-1, respectively. Highest protein, fat and carbohydrate content leafy vegetable is Bengal germ leaves 6.5 g 100 g-1, Drumstick leaves (Moringa oleifera L.) 1.5 g 100 g-1 and Jute leaves 12.57 g 100 g-1, respectively. Among all studied leafy vegetables the highest amount of Neutral Detergent Fiber (47.50 g 100 g-1) was estimated in Radish leaves (Raphanus sativus L.) and the lowest amount of NDF (24.98 g 100 g-1) was contained by Napa leaves (Malva verticillata L.). Cellulose content varied between highest Jute leaves 11.09 g 100 g-1 to lowest Lettuce leaves 4.05 g 100 g-1, hemicellulose content varied between highest Radish leaves 33.90 g 100 g-1 to lowest Napa leaves 15.12 g 100 g-1 and lignin varied between Jute leaves highest 6.01 g 100 g-1 to lowest Radish leaves 0.87 g 100 g-1.
 
 
 
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