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Articles by M. Asghar
Total Records ( 7 ) for M. Asghar
  Babar Hassan , M. Asghar , S. Nadeem , H. Zubair , H.M. Muzammil and M. Shahid
  Twenty eight strains from buffalo and cow milk were tested for amino acids production in M-1, M-II and L-6 media, fourteen being from each source. Generally, bacterial strains did not produce significant amount of all amino acids, but bacteria from both sources produced aspartic acid and alanine in molasses media (M-I and M-II). Maximum production of aspartic acid (1.9 g L-1) was given by MB-7 and MB-12 in M-I medium after 72 h of fermentation. Some strains of both the sources also produced glutamic acid. Valine (maximum 1.4 g L-1 by MC-10) was produced in M-I medium by some bacterial strains isolated from cow`s milk only. In L-6 medium, lysine (maximum 1.8 g L-1 by MB-6 and MC-13) was produced by all the isolates of both sources. The other amino acid which was produced in L-6 medium by majority of strains was isoleucine (maximum 2.1 g L-1 by MB-6). MB-5 isolated from buffalo milk was found as the best strain in L-6 medium and its produced glutamic acid, lysine and alanine as 4.5, 1.3 and 5.1 g L-1, respectively. It was observed that bacterial strains isolated from buffalo milk were more productive than the strains obtained from cow milk. The strains MB-1, MB-5, MB-13 and MB-14 obtained from buffalo milk and MC-1, MC-7 and MC-13 from cow milk were selected as good amino acids producers strains. Thus aspartic acid, alanine, glutamic acid, lysine and isoleucine were the major amino acids produced from the bacterial strains of both the milk sources.
  M. Asghar , M. Sadiq , S. M. Mehdi , M. Sarfraz , G. Hassan and R. Ahmad
  The results indicated that maximum yield of paddy was obtained from those plots which were transplanted on 20th July except 1997 where 5th August date gave the maximum but non-significant yield. Among the varieties Shaheen performed better than others. Straw yield decreased with the delay in transplanting irrespective of season. Maximum straw was produced when the lines/varieties were transplanted on 20th June followed by 5th July, 20th July and 5th August in all the years. Among the lines/varieties tested Shaheen produced the least straw. The results indicated that maximum yield of paddy was obtained from those plots which were transplanted on 20th July except 1997 where 5th August date gave the maximum but non-significant yield. Among the varieties Shaheen performed better than others. Straw yield decreased with the delay in transplanting irrespective of season. Maximum straw was produced when the lines/varieties were transplanted on 20th June followed by 5th July, 20th July and 5th August in all the years. Among the lines/varieties tested Shaheen produced the least straw.
  S.M. Mehdi , N. Sajjad , M. Sarfraz , R. Ahmad , M. Asghar and G. Hassan
  The results indicated that grain and straw yields, P concentration in grain and P uptake by grain and straw was increased significantly over control by the application of different sources of phosphorus. All the sources remained at par with each other in all the characteristics studied. However a careful scrutiny of the data showed maximum grain straw yields, P concentration in grain and straw and P uptake by grain and straw were with TSP followed by SSP, N/P and DAP. TSP appears a better source of phosphorus in mildly saline sodic soil.
  A. Sana , M. Rashid , M. Asghar and M. Yaqub
  Biomass protein was produced by fermentation of growth medium of corn stover containing (NH4)2SO4, CaCl2, 2H2O, MgSO4.7H2O, K2HPO4, yeast extract and molasses by Arachniotus sp. Maximum crude protein was obtained when the medium contained corn stover 7.5, (NH4)2SO4, 0.3, CaCl2.2H2O 0.05, MgSO4.7H2O 0.02, KH2PO4, 0.1 yeast extract 0.15 % and molasses 2.0 per cent after 48 hours incubation at pH 4 and 32OC temperature.
  Fathia Mubeen , M. Asghar , S.T.A.K Sindhu , Nusrat Yasmeen and M. Shazia
  The study was carried out for the maximum production of cellulases and hemicellulases at different substrate water ratio and ionic concentration. it was observed that maximum activities of above mentioned enzymes in IU/mI/min were monitored on 30 percent substrate: water ratio with 0.2 percent KH2P04 and 0.01 percent MgSO4.7H20. Maximum FPase and β-glucosidase activities were noted at 0.005 percent CaCl2 whereas CMCase and xylanase showed maximum activities in he presence of 0.01 and 0.1 percent CaCI2.
  M. Asghar , A. R. Rao and S. Farooq
  Intergeneric hybrids were produced between hexaploid wheat variety Chinese Spring and five different accessions of Aegilops geniculata; 2n=4x=28 CUCUMOMO (Aegilops ovata). The objective was to detect differences in chromosomal associations at meiotic metaphase-1 in the Fl hybrids using squash preparations of prefixed immature anthers. Chromosome pairing between all the hybrids raged between 35 univalents to 3 rod bivalents except for hybrid between Chinese Spring x Ae. geniculata accession 361881. This hybrid exhibited chromosome pairing up to 4 rod bivalents, 1 ring bivalent and 2 trivalents with the chiasma frequency of 4.10 per cell. This indicated possibilities of homoeologous chromosome pairing and genetic exchange between chromosomes of wheat and of Ae. geniculata. Significance of this pairing and the potential of Ae. geniculata for improvement of stress tolerance in wheat would be discussed in detail.
  Kishwar Hayat , Haq Nawaz , Farooq Latif and M. Asghar
  The purpose of present study was to determine the effect of dissolved O2 on cellulase and xylanase production by Chetomium thermophile in growth medium of wheat straw. The concentration of dissolved oxygen was optimized through stirring. Kinetic parameters including substrate utilization (g substrate L/h) and enzyme production (IU) was studied from the maximum slope in plots of substrate utilized (g/L) and enzyme produced (IU/L) vs time of fermentation. Specific rate of product formation (QP) and substrate utilization (Qs) was also determined.
 
 
 
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