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Articles by M.A. Salam
Total Records ( 11 ) for M.A. Salam
  M.F. Hossain , M.A. Salam , M.R. Uddin , Z. Pervez and M.A.R. Sarkar
  An experiment was conducted to evaluate the performance of three modern rice varieties viz., BR1, BR14 and BR26 along with a local variety, namely, Hashikalmi grown under direct seeded and transplanted method. High yielding varieties produced significantly higher grain yield compared with local variety. A higher spikelet sterility was recorded for the local variety compared with modern varieties especially when grown under direct-seeded method. Methods of planting exerted a significant influence on the yield and yield attributes of aus rice. Transplanted rice gave higher yield than direct seeded rice for both local and high yielding varieties.
  T.M. Islam , M.A. Salam , Z. Pervez , M.S.I. Sikdar and M. Eunus
  A field experiment was conducted to examine the comparative performance of different methods of planting techniques of late jute seed production. Line sowing technique in normal soil gave the highest seed yield (585 kg ha-1) while the top cutting plantation technique gave the lowest seed yield (260 kg ha-1). The yield performance due to different techniques graded from the highest to the lowest were line sowing, broadcasting in normal soil, broadcasting in puddled soil, seedling transplantation and top cutting plantation in normal soil.
  A.A. Hassan , N.N. Karim , M.A. Hamid and M.A. Salam
  Experiment was conducted to increase cropping intensity through soil water management and conservation practices. Transplanted rainfed aman rice is grown in Cropping patterns studied during 2000-01 were rice-legume-legume and rice-fallow-fallow, using early maturing drought tolerant crop varieties and local rice. Tillage treatments were imposed during land preparation. Mulch treatments were also imposed in legume rotations. Newly introduced varieties, BRRIdhan 33 and BINAdhan 4, were earlier by 25 and 15 days, respectively, compared with the local rice Sarna. The early harvest of rice varieties left enough residual moisture due to tillage amendments and mulch applications. The available profile soil moisture left was able to meet up about two-third of the water requirement of chickpea (cv. BINAsola2 and Hyprosola). Pre-sowing irrigation, tillage, mulch practices and little rain contributed to successful production of mungbean cv. BINAmoog 2 after chickpea. A reasonable yield of all the crops was obtained compared with the national average yield. The introduction of chickpea and mungbean in the cropping pattern resulted the cropping intensity from 100 to 300%. The altered cropping pattern (rice-legume-legume) evaluated with the existing one (rice-fallow-fallow) resulted the net return of t 37144.00 to t 55406.00 with BCR value of 1.94-2.40. The achievement of a new cropping pattern was only possible due to introduction of early drought tolerant crop varieties, soil water management and conservation practices.
  M.A. Halim , S.A. Nessa , A.K.L. Rahman , D.A. Chowdhury and M.A. Salam
  A number of diazocoupling products of molybdenum (VI) chelates of β-diketones with various types of aryldiazonium ions have been prepared. Aryldiazonium ions are obtained through the diazotization of aniline and substituted aniline using sodium nitrite and hydrochloric acid. The prepared diazocoupled products were studied by their analytical data, magnetic moment, molar conductance, electronic, infrared and 1HNMR spectral studies. The presence of vN=N mode in the IR spectra and absence of methane proton signal in the 1HNMR spectra of the prepared diazocoupled products indicate the occurrence of diazocoupling reaction. The molar conductance values indicate the non-electrolytic nature of the diazocoupled products. The electronic spectra and the dia magnetic behavior are indicative of the presence of +6 oxidation state of molybdenum. The structures of the synthesized diazocoupled products of molybdenum (VI) are likely to be octahedral.
  M.A. Rahman , M.A. Rashid , M.A. Salam , M.A.T. Masud , A.S.M.H. Masum and M.M. Hossain
  The study was carried out to identify resistant rootstocks of Solanum species for grafting of cultivated eggplant varieties against root-knot nematode and to evaluate the grafting compatibility of eggplant varieties with wild Solanum root-stocks. Three experiments were conducted in this respect. Six wild Solanum root-stocks were screened against root-knot nematode (Meloidogyne incognita). The root-stocks Solanum torvum and Solanum sisymbriifolium showed resistant reaction against root knot nematode. Fourteen varieties/genotypes were screened against root-knot nematode among which six varieties/genotypes showed resistant reaction. Three cultivated eggplant varieties viz., Sufala, Singnath and Kazla were grafted on Solanum torvum and Solanum sisymbriifolium. The highest grafting success was 95% in case of Solanum torvum with Sufala and the lowest (85%) in Solanum sisymbriifolium with Singnath. The success of grafting was not affected significantly due to the effect of scion and or of root stocks. The grafted plants showed resistant reaction against the disease while the scion plants showed susceptibility in the sick beds. The grafted plants also showed resistant reaction against the disease in the field conditions. The grafted plants also outyielded compared to the scion plants. The grafting combination Solanum torvum with Sufala gave the highest yield compared to other grafting combinations and non-grafted plants.
  M.A. Rahman , S.R. Saha , M.A. Salam , A.S.M.H. Masum and S.S. Chowdhury
  Correlation and path coefficient analysis in onion showed that total bulb yield (kg ha -1) had significant positive correlation with plant height, leaf number per plant, bulb diameter and bulb yield per plant but had significant negative association with plant spacing. Path analysis indicated that bulb diameter, plant height and leaf number per plant were the principal components of yield.
  M. Saiful Islam , M.A. Rahman , M.A. Salam , A.S.M.H. Masum and M.H. Rahman
  An experiment was carried out to study the growth and vegetable pod yield of edible podded pea as influenced by sowing time and spacing. The experiment consisted of two factors, which were three sowing times and six plant spacings. The results revealed that Nov. 23 sown plants showed higher leaf area index, leaf, stem and pod dry matter, plant height and vegetable pod yield than those of Nov. 8 and Dec. 8 sowing. Closest spacing produced the highest LAI, leaf, stem and pod dry matter, crop growth rate, plant height and vegetable pod yield. However, relative growth rate and net assimilation rate were the highest in widest spacing. Regardless of variation in sowing time and spacing, LAI, leaf and stem dry matter, CGR, RGR and NAR increased sharply up to 60 DAE and then declined but pod dry matter increased thereafter. Moreover, plant height increased rapidly up to 60 DAE and then slowly. The highest vegetable pod yield (10.26 t ha -1) was recorded from the Nov. 23 sowing with 30x20 cm2 spacing.
  Dayang Norafizan A. Chee , M.A. Affan , Fasihuddin B. Ahmad , M.R. Asaruddin , Norrihan Sam , M.A. Salam , Ahmad Ismail and S.H. Tan
  Six new organotin(IV) complexes were synthesized by direct reaction of RSnCl3 (R = Me, Bu and Ph) or R2SnCl2 (R = Me, Bu and Ph) and 2-hydroxyacetophenone thiocarbohydrazone [H2APTC] under purified nitrogen in the presence of base in 1 : 2 : 1 molar ratio (metal: base: ligand). Complexes 2−7 have been characterized by elemental analyses, molar conductivity, UV-Visible, IR and 1H NMR spectral studies. Complexes 27 are non-electrolytes. The molecular structure of [Me2Sn(APTC)] . (C2H5OH) (5) has been determined by X-ray diffraction analysis. The thiocarbohydrazone ligand (1) and 27 have been tested for antibacterial activity against Escherichia coli, Staphylococcus aureus, Salmonella typhi and Enterococci aeruginosa.
  Sarder Nasir Uddin , A.M. Hasan , M.R. Anower , M.A. Salam , M. J. Alam and S. Islam
  Until the advent of genetic engineering, enzyme producers were limited in their ability to produce innovative products for the marketplace. They were constrained to isolate enzymes from organisms approved for the industrial use. The desired characteristics could be enhanced only using classical in lit agenesis techniques. When these methods failed, no alternatives were available. Commercialization depended on incremental yield improvements gained by continuous programs of strain development. The ability to use recombinant DNA (rDNA) techniques has removed many of these barriers. Enzyme producers recognized early the potential for commercialization new products using genetic manipulation. They worked with a wide variety of single-celled organisms that were simpler and thus, easier to understand then the higher orders of plants and animals. The organisms already were well characterized for growth and expression rates. Short life cycles allowed rapid testing. These systems were ideal for genetic manipulation using rDNA techniques. Genetic engineering, combined with an understanding of biocatalysts to predict alterations for enzyme improvements, is revolutionizing the production and use of enzymes in the marketplace. Offering a recombinant produced product represents the culmination of a long and complex effort on the part of a multitude of disciplines: molecular and microbiology, X-ray crystallography, enzymology, protein and organic chemistry, biochemistry, fermentation and formulation engineering, assay chemistry and technical service/applications, marketing, sales. Because of the variety of disciplines required, a critical mass is needed to innovate products successfully and them to market. The continued proliferation of novel enzyme products requires development of core technologies so complex and expensive that they can be justified only rDNA technology must consider regulatory issues, ownership protection and consumer acceptance.
  M.M. Haque , N.T. Narejo , M.A. Salam , S.M. Rahmatullah and M.A. Islam
  A four month long experiment was conducted in earthen ponds (each of 81 m2 in size) during the month from August to November, 2001 to observe suitable stocking density of Macrobrachium rosenbergii in polyculture of Indian major carps viz. catla (Catla catla), ruhu (Labeo rohita) and mrigal (Cirrhinus mrigala). Six densities of M. rosenbergii with carps were considered as treatments. Each treatment had three replications. All the fish were same age group and mean initial weight of prawn, catla, ruhu and mrigal were 1.1± 0.12, 14.2 ± 0.52, 8.5 ± 0.16 and 11.8 ± 0.20g respectively. Water quality parameters including temperature, dissolved oxygen and pH were found in the suitable range. The best combination of prawn-carp polyculture (prawn: catla: ruhu: mrigal = 25: 15: 15: 15) was found in the treatment T3 with significantly (p<0.05) highest growth of M. rosenbergii and carps.
  M.R. Islam , M.A.B. Faruquei , M.A.R. Bhuiyan , P.S. Biswas and M.A. Salam
  Genetic diversity of 62 genotypes of irrigated rice originating from BRRI, IRRI and China were studied through Mahalanobis D2statistic. The genotypes were grouped into five clusters. The cluster II and IV contained the highest number of genotypes (16) and the cluster I contained the lowest (7). The highest intra cluster distance was noticed for the cluster I and the lowest for cluster III. The highest inter cluster distance was observed between cluster I and cluster IV followed by cluster I and cluster V, cluster I and cluster III, cluster III and cluster IV and lowest between cluster IV and cluster V. The highest cluster means for yield and other three yield contributing characters are obtained from cluster I, six highest and two second highest means for yield contributing characters are found in cluster III but the lowest cluster mean for yield. Therefore more emphasis should be given on cluster I for selecting genotypes as parents for crossing with the genotypes of cluster III, which may produce new recombinants with desired traits.
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