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Articles by Shaheen Sultana
Total Records ( 2 ) for Shaheen Sultana
  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.
 
 
 
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