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Articles by N. Islam
Total Records ( 3 ) for N. Islam
  K. Nahar , S.M. Ullah and N. Islam
  The experiment was conducted in the experimental field of Sher-e- Bangla Agriculture University, Dhaka Bangladesh to study the effect of water stress on fruit quality and osmotic adjustment in five tomato cultivars. The percentage of field capacity levels were 40-50, 53-67, 69-85 and 82-100%. The plants had a tendency to adjust against drop in potential in soil by producing organic solutes such as glucose, fructose, sucrose and proline. The quality of fruits was improved as a result of the synthesis of ascorbic acid, citric acid and malic acid. No physical damage due to stress was observed in fruits, which were over 90% red.
  K.G. Hossain , N. Islam , D. Jacob , F. Ghavami , M. Tucker , T. Kowalski , A. Leilani and J. Zacharias
  Essential minerals are considered as key determinants of optimum health and nutritive quality of common bean seed. This study aimed to identify genetically stable essential minerals in common bean. Eleven diverse common bean genotypes were grown in three distinct growing environments and 17 essential minerals were analyzed by Inductively Coupled Plasma-Optical Emission Spectroscopy. Genetic control of mineral composition in common bean seed was demonstrated by large (p<0.01) genotypic differences in Ca and Sr contents and moderate genotypic difference was observed in Fe content. Significant influence of genotype and environments (GxE) interaction was observed in the content of all minerals. The ratios between genetic and environmental variances and between genetic and GxE variances indicated the greater influence and stability of genetic factor on the concentration of Ca and Sr in common bean seed. Significant positive correlations among important minerals such as Zn with S, P, Fe and Na and Cu with K, Mg, Ni, P were identified. The stability of genetic effects on Ca and Sr concentration in common bean has been identified in this study. Calcium is one of the most important minerals which regulates many cellular processes and has important structural roles in living organisms. Further studies to characterize Ca physiology in common bean may identify genetic or biochemical markers to expedite breeding common bean with enhanced Ca concentration.
  M.A. Rahman , N. Islam , A. Islam , M.K. Hassan and M.M.R. Talukder
  A field experiment was conducted at the Regional Agricultural Research Station of Barisal, Bangladesh during the Kharif season of the year 2000 to find the optimum fertilizer rate for summer mungbean cv. Barimung-4 in an attempt to maximize the yield potential. In this regard, various combinations of NPK fertilizers and Rhizobium inoculation (N20P40K20 kg ha–1, P40K20 kg ha–1, N20K20 kg ha–1, N20P40 kg ha–1, N20 kg ha–1, Rhizobium + P40K20 kg ha–1, Rhizobium, and control) were imposed to the experimental plots. Results revealed that Barimung-4 produced the maximum seed (1270.21 kg ha–1) and straw yields (2434.36 kg ha–1) when the crop was fertilized with N20P40K20 kg ha–1 followed by Rhizobium + P40K20 kg ha–1 (1220.30 and 2406.14 kg ha–1, respectively. The lowest seed and straw yields were obtained from the control (887.01 and 1864.68 kg ha–1, respectively). Different plant characteristics such as plant height, branches/plant, pods/plant, pod length, seeds/pod, 1000-seed weight and harvest index increased significantly due to the application of various combinations of NPK fertilizers and Rhizobium inoculation over the control.
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