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Articles by M.A.K. Azad
Total Records ( 15 ) for M.A.K. Azad
  F. Begum , M.N. Amin , S. Islam and M.A.K. Azad
  Nodal segments of in vitro germinated seedlings of three pummelo varieties [Var.-1 (pulp is pink colour), Var.-2 (pulp is white colour) and Var.-3 (pulp is red colour)] were cultured on half-strength MS medium for axillary shoot proliferation. A large number of shoot buds were produced when such four weeks old culture were subcultured on half-strength MS medium containing 1.0 mg l-1 BAP. Roots were induced when the isolated individual shoots were cultured on half-strength MS medium containing 0.1 mg l-1 each of NAA, IBA or IAA. Cent percent root were observed on half-strength MS medium having 0.1 mg l-1 NAA. These in vitro grown plantlets were then successfully transferred to outside natural condition through successive phases of acclimatization. About 93% of the regenerated plantlets survived under ex vitro condition.
  M. Hasanuzzaman , A. Reza , F. Kabir , M.J. Uddin and M.A.K. Azad
  A total of 15 young rabbits (kits) of 35 days old were randomly allocated to same concentrate mixture (T2) in a completely randomized design. All the rabbits were offered ad-libitum green grass with same concentrate mixture. All the animals were kept in the same management. The feed intake, live weight changes and feed conversion efficiency was recorded. DM intake in three different groups (A, B, C) were 350.53?46.57, 403.62 ± 41.89 and 389.30 ± 53.71 (g/wk) which were not significant. The average daily gains in group A, B and C were 11.25 ± 8.71, 15.20 ± 8.33 and 14.43 ± 9.84 respectively and the differences among groups were not significant. The differences in growth velocity among different groups were not significant. Feed conversion efficiency were 4.45, 3.79 and 3.85 for group A, B and C respectively and the values were found non-significantly different. The result indicated that feeding of mother in terms of energy did not have any significant effect on DM intake, live weight changes, growth velocity and feed conversion efficiency upon their kits.
  M.A.K. Azad , M.N. Amin and F. Begum
  The proliferating axillary shoot cultures were established on MS medium supplemented with different concentrations of cytokinins and auxins, using nodal explants from the field grown mature plant of A. vasica. In vitro response of the explants to multiple shoot regeneration varied greatly with the position of the explanting branch on the donor plant. Highest frequencies of shoot formation and maximum number of shoots per explant were obtained on MS medium supplemented with 0.5 mg/l BA. The elongated shoots were rooted successfully on half strength of MS medium with 0.1-0.2 mg/l IBA or without any auxin. The complete plantlets thus regenerated in vitro were successfully transferred to the field.
  M.Z. Karim , M.N. Amin , M.A.K. Azad , F. Begum , M.M. Rahman , M.M. Islam and R. Alam
  Shoot multiplication of Chrysanthemum morifolium was achieved from the nodal and shoot tip explants of mature plant using MS medium with different concentrations and combinations of growth regulators. Maximum frequency of explants produced axillary shoot and the highest number of shoots per explant were obtained when MS medium fortified with 1.0 mg l-1 BAP.The combination BAP+GA3 was found effective result. But Kinetin (Kn) showed low performance for producing multiple shoots. The degree of shoot formation was affected by explant types and the exogenous hormonal regime in the medium.
  M.M. Rahman , M.N. Amin , M.A.K. Azad , F. Begum and M.Z. Karim
  Leaf segments from field grown mature plants of Elaeocarpus robustus Roxb. were used to initiate cultures for inducing callus and subsequent differentiation of shoot buds. Callus production was obtained within seven weeks and adventitious shoot formation was observed after five weeks of incubation on ½ MS medium supplemented with 0.5 mg l-1 BA + 0.1 mg l-1 NAA + 15% CW. Complete plantlets were obtained upon transfer of shoot cuttings on ½ MS with 0.1-2.0 mg l-1 IBA, NAA, IAA or without any auxin. The best and healthy rooting was observed on ½ MS medium supplemented 0.2 mg l-1 IBA. In vitro regenerated plantlets were transferred to potting soil and successfully established under natural condition with about 60% survival.
  F. Begum , M.N. Amin , S. Islam , M.A.K. Azad and M.M. Rehman
  Cotyledon explants from in vitro grown seedlings were cultured on half-strength of MS medium with different growth regulators for in vitro indirect regeneration of shoots. Optimum callus formation, when cotyledon explants were cultured on MS containing 1.0 mg l-1 BAP with 5.0 mg l-1 NAA. After that the calli were used for shoot regeneration by transferring them  half-strength MS medium supplemented with only cytokinin. Maximum percentage of shoot regeneration was obtained on half strength MS medium in the presence of 1.0 mg l-1 BAP from callus in three varieties [Var.-1 (pink colour), Var.-2 (white colour) and Var.-3 (red colour)] of pummelo. For rooting, shoot cuttings were cultured on half strength MS salts with 0.1-1.0 mg l-1 NAA, IBA or IAA. The best and healthy rooting was observed on 0.1 mg l-1 NAA. The plantlets of three varieties were successfully established on soil. About 95% of plantlets survived under ex vitro condition.
  M.E. Kabir , M.A. Karim and M.A.K. Azad
  It is established that salinity disturbs mungbean plant growth by creating nutrient imbalance and disturbance in plant water relations. This study was undertaken to observe whether external application of K mitigates the harmful effect of salinity. Mungbean plant (var. BARI mung 3) was grown in pot at three levels of K viz. 14, 40 and 60 kg ha ha-1 under 0 and 75 mM NaCl saline conditions. Salinity decreased seriously relative water content and water retention capacity, while increased water saturation deficit and water uptake capacity. Salinity also decreased xylem exudation rate and leaf water potential. Application of higher amount of K improved the plant water relationship in mungbean plant. Salinity disturbed dry matter distribution in different plant parts as well decreased total dry matter. Similarly yield and yield contributing characters were also seriously affected by salinity, except number of seeds per pod. Application of different levels of potassium did not influence on dry matter production. However, yield and yield contributing characters were improved to some extent with the increasing levels of K. Salinity decreased significantly the uptake of N, P, K and Ca, while increased Na uptake several fold. Mg accumulation was unchanged due to salinity. K doses had no significant influence on nutrient uptake by mungbean plant, though the uptake of most of the nutrients showed an increasing tendency with the increased levels of K application. It was concluded that application of higher levels of K improves water relations as well as growth and yield of mungbean under mild level of saline conditions.
  M.A. Jalil , M.A.K. Azad and A.M. Farooque
  An experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh during the period from December, 1995 to examine the effects of different mulch materials on potato yield. There were seven mulching treatments viz., no mulch with no irrigation (control), no mulch with irrigation, natural mulch with irrigation, rice straw water hyacinth, black polythene and white polythene. The mulching treatments were applied on two potato varieties viz., Lal Pakri and Cardinal. The experiment was laid out in randomized complete block design with three replications. The black polythene mulch took minimum time (12 days ) to reach 80% emergence. Variety Lal pakri took longer time (97.33 days) to attain maturity than the Cardinal (87.91 days) and white polythene mulch enhanced early maturity (89.17 days), while natural mulch + irrigation treatment took longer time, (96.33 days). The maximum yield was obtained from water hyacinth mulching (47.70 t ha-1 for Cardinal and 28.4 t ha-1 for Pakri) and the lowest was in the control (38.54 and 19.79 t ha-1 for Cardinal and Lal Pakri, respectively). Water hyacinth mulch was found to be economically best mulching treatment.
  M.M. Rahman , M.N. Amin , R. Ahmed , M.A.K. Azad and F. Begum
  Regeneration of multiple shoots via callus induction and organogenesis were achieved in native-olive (Elaeocarpus robustus). Callus induction and shoot buds regeneration were obtained from internode explants of Elaeocarpus robustus on their sufficient medium. The best organic callus was found on modified MS (MMS1) medium supplemented with 0.5 mg L1 BA+0.5 mg L1 2,4-D. Development of adventitious shoots occurred when the calli were subcultured on MMS1 medium supplemented with BA and NAA. Maximum frequency (80%) of calli induced adventitious shoots with highest number of 14.05 ± 1.56 shoots per callus were obtained when the medium was fortified with 1.0 mg L1 BA+0.1 mg L1 NAA. Plantlets developed roots when in vitro developed microcuttings were implanted on modified MS (MMS2) medium with 0.2 mg L1 of IBA. Within six weeks of transfer, 65% rooting was achieved on this medium. Rooted shoots (plantlets) were gradually acclimatized and successfully established under natural condition with about 50% survival rate.
  S.M.A. Khalid , M.R. Amin , M. Mostofa , M.J. Hossain and M.A.K. Azad
  The present study shows that the overall prevalence of gastro-intestinal nematodes in sheep was 58.18% in Mymensingh. Sheep were infested with Strongyloides spp. (7.7%), Haemonchus spp. (18.18%), Trichuris spp. (5.45%), Oesophagostomum spp. (9.09%) and mixed infection (14.18%). Twenty sheep were selected from fifty five sheep for this study which was heavily infected with gastro-intestinal nematodes marked by McMaster method. Sheep were treated with Vermic® (ivermectin) @ 0.23 mg kg-1 body weight. A significant (p<0.01) reduction of EPG count was found on 7th, 14th, 21st and 28th day of Vermic® (90.51, 89.85, 87.91 and 86.38%) treated sheep. The EPG count of untreated control group were significantly (p<0.01) increased about 7.88, 11.45, 20.15 and 30.26% on 7th, 14th, 21st and 28th day, respectively. After treatment with Vermic®, Total Erythrocyte Count (TEC), Hemoglobin (Hb) content and Packed Cell Volume (PCV) were increased significantly (p<0.01 and p<0.05) in sheep. On the other hand Total Leukocyte Count (TLC) was decreased significantly (p<0.01 and p<0.05) in all treated sheep. The body weight was increased significantly (p<0.01 and p<0.05) in Vermic® treated group. On the other hand body weight was decreased in untreated control group. Vermic® may be used as a broad spectrum anthelmintic against gastro-intestinal nematodiasis in sheep.
  M.A.K. Azad , M.A. Hashem and M.M. Hossain
  Study was conducted to gain a better understanding on the impact of tiger attacks on people by tigers from the Sundarbans as well as different zoo in Bangladesh. From the study it was observed that the highest number of tiger attacks occurred in Shatkhira and lowest in Khulna range, the largest concentration (94%) of attacks took place between 10-12 AM and least (10%) at 9 PM to 3 AM as well as it is clear that people in the age group 15-29 are the least vulnerable, while people that are 60 or over are much vulnerable to tiger attacks, where as Mawalis are the most (51%) as well as Bawalis are the second most (20%) vulnerable to tiger attacks. From the study it also appears that 52% of the victim’s are attacked during collecting fuel wood, timber or other raw materials and around 20% of the victim’s are found during fishing, among them 68% of the victim’s suffered from their decrease income and expenditure and around 28% of the victim’s suffered from stopping their income source. From the study it is concluded that an awareness campaign and motivation is needed as well as diversified income stability to create for the victim’s in the Sundarbans.
  M.Z. Alam , M.S. Rahman , M.E. Haque , M.S. Hossain , M.A.K. Azad and M.R.H. Khan
  The study was conducted to investigated the effect of irrigation and irrigation on growth and yield of wheat (cv. Kanchan). The results revealed that both the irrigation and nitrogen gave significant (p<0.05) effect on all studied growth parameters such as plant height (90.09 and 90.42 cm), number of tillers plant-1 (3.21 and 3.20), leaf area index (LAI) (1.37, 1.55 at 60 DAS and 3.73, 4.77 at 75 DAS), crop growth rate (CGR) (282.10, 333.13 mg day-1 plant-1 at 60-75 DAS and 158.99, 177.35 mg day-1 plant-1 at 75-90 DAS) and relative growth rate (RGR) (0.108, 0.1098 mg mg-1 day-1 at 60-75 DAS and 0.021, 0.022 mg mg-1 day-1 at 75-90 DAS). Among the yield contributing characters the number of effective tillers plant 1 (2.89 and 2.92), number of non effective tillers plant-1 (0.52 and 0.67), number of non-fertile spikelets spike-1 (2.44 and 2.51), grain yield (2.69 and 2.50 t ha-1) and harvest index (46.55 and 45.25%) were significantly influenced by irrigation as well as nitrogen level. The increments of grain yield mainly due to increase in number of effective tillers plant-1.
  M.A.K. Azad and M.G. Rabbani
  An investigation was carried out to study the floral biology of different Carica species. Early flowering was occurred in C. cauliflora both male and female flowers after transplanting of the seedlings and male flower emerged earlier compared to female flower of different Carica species. The tallest rachis of male inflorescence was obtained from C. papaya cv. Shahi. The male flower buds of C. papaya cv. Ranchi took the highest time from initiation to dehiscence and the maximum time was required from initiation to receptivity in C. papaya cv. Shahi. The anthers dehiscence of all species were increased with the increasing the temperature up to 12 p.m. during the study. The maximum female flower opening was observed in C. cauliflora at 8-9 a.m. The opening of flowers Shahi and Ranchi were gradually increased from 6 to 8 a.m. and declined after 8 to 11 a.m. The cent percent fruit set was recorded in C. cauliflora on the day of anthesis and the fruit sets were decreased with increasing the anthesis period up to 5 days after anthesis. No fruit set was found at 6 days after anthesis.
  M.A.K. Azad , M.R. Rahman , Z. Rahman , M.A. Kader , M.M. Haque and M.J. Alam
  An experiment was conducted to evaluate the water quality, growth and production of fishes at different species compositions in polyculture using tilapia (Oreochromis niloticus), pangas (Pangasius hypophthalmus), mrigal (Cirrhinus mrigala) and silver carp (Hypophthalmichthys molitrix). The experiment was conducted for a period of 90 days from September 8, to December 7, 2002 at the Fisheries Faculty Field Laboratory of Bangladesh Agricultural University, Mymensingh. There were three treatments each with three replications. In all the treatments, the stocking density was 100 fish/decimal at different species compositions. All the ponds were subjected to same regime of feeding and fertilization. Fortnightly random sampling was done to adjust the feeding rate. In this experiment, mrigal showed the highest SGR (% per day) value (3.74) in T2. Tilapia showed the second highest (3.65) SGR (% per day) in T1. Specific growth rate (% per day) of pangas was comparatively lower in all treatments. Mean survival rates of various species ranged from 90.63 to 91.10%. Comparatively, tilapia showed the highest survival rate where pangas showed the lowest. T1 showed the highest survival rate but there was no significant variation among the treatments. Weight gain (g) of tilapia, pangas, mrigal and silver carp were 89.18, 30.61, 85.75 and 91.71 g in T1, 63.95, 37.24, 86.86 and 65.63 g in T2 and 70.84, 47.65, 70.42 and 72.87 g in T3, respectively. The highest and the lowest weight gain were found in T1. Silver carp attained maximum weight gain (91.71 g) in T1 where pangas showed the lowest (30.61g) in the same treatment. Among the treatments, the highest production was found in T1 (1974.02 kg/ha/90 days) which was significantly higher than other treatments. The production in T2 and T3 were 1405.59 and 1522.01 kg/ha/90 days but there was no significant variation between T2 and T3. Considering the above, pangas showed the lowest growth performance and production in all treatments compare with other species. From the findings of the present study, it can be said that polyculture of pangas with tilapia is not suitable, but it may be suitable with carps and for this further research is necessary.
  A. Haque , M.J. Alam , M. Hasanuzzaman , M.N. Islam and M.A.K. Azad
  Three types of rasogolla were prepared from cow milk chhana and buffalo milk chhana named as A (100% cow milk chhana). B (100% buffalo milk chhana) and C (50% cow + 50% buffalo milk chhana). Quality of those was evaluated by physical and chemical tests. Rasogolla made from cow milk chhana gained the highest organoleptic score. In addition the addition of 50% buffalo milk chhana with 50% Cow milk chhana Produced rasogolla nearly similar to A type rasogolla.
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