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Articles by M.A. Haque
Total Records ( 8 ) for M.A. Haque
  M.M. Islam , M.A. Haque and M.M. Hossain
  The experiment was carried out at the orchard of jackfruit research project, Bangladesh Agricultural University, Mymensingh during the period from July 2000 to October 2001 to find out the effect of age of rootstock and time of grafting on the success of epicotyl grafting in jackfruit. The experiment consists of three ages of rootstock viz., 7, 14 and 21 days and seven month of grafting viz., August, September, October of 2000 and April, May, June, July of 2001. It was conducted in randomized complete block design with three replications. Age of rootstock and time of grafting had significant effect on all the parameters studied. The highest success (39.84%), the minimum time required to bud break (18.78 days) and the highest survival (34.41%) were found in 14 days old rootstock. In case of time of grafting, the highest success (49.55%) and survival (45.47 %) and the maximum growth of grafts were observed in the month of June. On the contrary, the lowest success (10.08%) and survival (13.92%) were found in April. The maximum time required to bud break was found in the month of October (24.79 days) while it was minimum in July (20.72 days).The treatment combination of 14 days old rootstock in the month of June produced the highest success (57.33%), the highest survival (53.71%) and the growth of grafts. Therefore, 14 days old rootstock and grafting in the month of June is the best for the propagation of jackfruit through epicotyl grafting.
  D.E. Jharna , B.L.D. Chowdhury , M.A. Haque , M.R.H. Bhuiyan and M.M. Husain
  A pot experiment was conducted for screening of ten drought tolerant groundnut (Arachis hypogaea L.) genotypes. Ten genotypes were collected from the International Crop Research Institute for Semi Arid Tropics (ICRISAT), India. Plants were grown in Hoagland solution and by adding 4% polyethylene glycol-6000, water stress was imposed. As index of drought tolerance, change in free proline content and stability of nitrate reductase activity in the leaves of water stressed plants was monitored. In the drought tolerant plant, the increase in proline over the control varied from 5.44 to 7.16 fold and the decrease in nitrate reductase activity ranged from 4.97 - 6.69%. On the basis of increase in proline accumulation and degree of stability of nitrate reductase, 3 genotypes were selected as drought tolerant and they were 3203, ICGV-93269 and ICGV-93232.
  Hossain, M. M. , M.A. Haque , M. A. Rahim and M. H. Rahman
  Three varieties of mango were selected to find out the physio-morphological and chemical compositional differences in the fruits. Amrapali possessed highest pulp with skin (87.12%) and lowest stone (11.88%) but the fresh fruit weight was minimum (221.33 g). The variety of Bishawanath had the highest fresh weight (256.0 g) and stone (18.67%) and lowest in pulp with skin (81.33%), pulp stone ratio (4.4:1) and keeping quality (8.75 days). Keeping quality was maximum in Amrapali (12.5 days). Total sugar (26.85%), TSS (23.50%) and pH of pulp (6.0) were maximum in Amrapali, but Bishawanath showed maximum titratable acidity (0.87%) and Vitamin C (14.20 mg/100 g).So, Amrapali was superior in respect of all characters to other varieties.
  M.A. Hossain , M.R. Karim , S. Begum , M.A. Hossain and M.A. Haque
  Experiment was carried out to investigate the effect of cephalexin on sex expression, fruit setting, fruit development and yield of cucumber. Cucumber was grown in the field at natural condition and treated with cephalexin solutions of 0,12.5, 25, 50, 75 and 100 ppm at seedling stage (2-true leaf stage). Data were collected on number of male flowers/plant, number of female flowers/plant, number of fruits/plant, days to first male flowers, days to first female flowers, % fruit setting, fruit size, fruit weight and fruit yield/plant. The results revealed that foliar application of cephalexin changed the growth habit of cucumber reducing the vegetative phase and extending flowering phase of the plant. The lowest vegetative phase (30.3 days) and the highest reproductive phase (65 days) was found in the plants treated with 50 ppm cephalexin. It suppressed the production of male flowers but increased the number of female flowers thereby subsiding the ratio of male to female flowers. Cephalexin significantly increased the fruit setting over control with the highest (68.7%) in 50 ppm. It also increased the fruit length, girth, weight and ultimately total yield/plant by 48.0, 55.0, 52.6 and 172.2%, respectively, in 50 ppm treatment.
  S. Datta , M.M. Rahman , M.A. Haque , M.M. Islam and M.F.A. Mollah
  Colchicine(0.05%) treated tissues of day-old larvae of Ompok pabda were observed under a research microscope after hydrolysis, mordanting and staining with 10% HCl, 2% aqueous solution of iron alum and 0.5% haematoxylin for 10 minutes, 6 minutes and 10 minutes respectively. Photomicrographs were taken from critically selected plates. From the photomicrographic enlarged prints chromosome number 2n=42 was counted, of which only 18 could be measured which consisted of 10 metacentric, 7 submetacentric and 1 subtelocentric. Length of the measured chromosomes varied from 1.1 to 3.9 μ .
  A.K.M. Azad-ud-doula Prodhan , M.L. Rahman and M.A. Haque
  The plant base diameter was studied in Corchorus capsularis L. (cv. CVL-1 and D-154) and Corchorus olitorius L. (cv. O-4 and R-26) grown under constant drought, constant saturation, alternate saturation and drought, and different levels of standing water (5 cm, 10 cm, 20 cm and 30 cm) conditions. The cultivar O-4 had been found to be tolerant to drought but susceptible to waterlogging condition, particularly at the young stage of growth. On the descending order of base diameter and tolerance of submersion, the test cultivars could be placed as CVL-1 > D-154 > R-26 > O-4. The base diameter of CVL-1 plants decreased in constant drought condition as compared to that of O-4 plants. At the age of 90 days, the decrease in base diameter in CVL-1 plants was doubled compared to that of O-4 plants. On the contrary, the base diameter of O-4 and R-26 plants decreased in standing water condition compared to that of CVL-1 and D-154 plants. The CVL-1 plants died earlier in constant drought. The O-4 and R-26 plants died earlier in standing water condition compared to CVL-1 and D-154 plants. It appeared that the base diameter highly affected by standing water in case of Corchorus olitorius and by constant drought in case of Corchorus capsularis. The base diameter of all the stressed plants decreased in comparison with those of control plants.
  M.N. Islam , M.Z.I Khan , S.R. Khan and M.A. Haque
  Morphomatrical analysis of aortic valves of bovine heart was done for the purpose of manufacturing of bioprosthetic materials in Bangladesh. The study analyzed 32 healthy fixed bovine hearts; 50% of them obtained from males, 50% of them from female animals ranged from 2 to 4 years old. The characteristics assessed related to age and sexes were the following: number and height of the cusps and size of the lunulae. This study included the assessment of 32 aortic valves of the hearts, 8 valves from each of 2, 2.5, 3 and 4 years of indigenous cattle. All the bovine hearts assessed in the present study possessed tricuspid aortic valve. The values of the heights of left, right and noncoronary cusps were 14.91±2.47, 14.25±2.60 and 15.19±1.75 mm, respectively and NC cusp had the largest dimensions, followed by the RC and the LC cusps, whose dimensions were nearly similar. The highest values of lunula (width and length) were 8.31±1.35 mm for LC in case of width and 32.22±3.10 mm for RC in case of length. Data about height of the cusps, the size of the lunula (width and length) of the cusps and their anatomical relations facilitate the manufacturing of bovine tissue valves as well as those can be used in valve replacements as like as stentless porcine and bovine pericardial bioprostheses are being used clinically
  A.K.M. Azad-ud-doula Prodhan , M.L. Rahman and M.A. Haque
  The plant height was studied in Corchorus capsularis (cultivars D-154 and CVL-1) and Corchorus olitorius (cultivars O-4 and R-26) grown under various water regimes. The cultivars were grown under constant drought, constant saturation, alternate saturation and drought and different levels of standing water (5 cm, 10 cm, 20 cm and 30 cm) conditions. The cultivar O-4 had been found to be tolerant to drought but susceptible to waterlogging condition, particularly at the young stage. On the tolerance of submersion, the test cultivars could be placed as D-154 > CVL-1 > R-26 > O-4. The plants of CVL-1 became shorter than that of the O-4 in constant drought. On the contrary, the plants of O-4 and R-26 became shorter than that of the CVL-1 and D-154 in standing water conditions. The plants of O-4 and R-26 died earlier when they were exposed to standing water condition in young stage compared to those of the CVL-1 and D-154. It appears that the plant height is highly affected by constant drought in case of Corchorus capsularis and by standing water in case of Corchorus olitorius. The stressed plants of all the cultivars are shorter than their corresponding control plants.
 
 
 
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