12 research outputs found
GENETIC DIVERSITY, CORRELATION AND PATH CO-EFFICIENT ANALYSIS IN SOYBEAN (Glycine max (L.) Merrill)
No full textA thesis
Submitted to the Faculty ofAgriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfilment of the requirenents
for the degree of
MASTER OF SCIENCE
IN
GENETICS AND PLANT BREEDINGA field experiment was conducted during December, 2011 to April. 2012 to study the
genetic variability, correlation, path coefficient analysis and genetic diversity for quantitative
traits in soybean ((ilycine max (L.) Merrill ) with 28 genotypes in randomized complete
block design with three replications. The genotypes were placed in a field experiment
conducted at the research farm of Shcr-e-Bangla Agricultural University. Dhaka- 1207.
Analysis of variance for each trait showed significant differences among the genotypes.
Phenotypic coefficients of variation (PCV) was close to genotypie coefficients of variation
((;CV) for all the characters except pod length and seeds per pod indicating that environment
had influence on the expression of these characters. High heritability associated with high
genetic advance percent of mean was observed for plant height, number of branches per
plant, pods per plant, seeds per plant and hundred seed weight which indicated that selection
for these characters would be effective. Seed yield per plant had highly significant positive
genotypic and phenotypic association with plant height, branches per plant, pods per plant,
pod length, seeds per pod, seeds per plant and hundred seed weight revealing that selection
based on these traits would ultimately improve the seed yield. Path coefficient analysis
revealed that seeds per plant and hundred seed weight had the highest positive direct effect
on seed. Hence, thrust has to be given for these characters in future breeding programme to
improve the yield in soybean. Multivariate analysis based on II characters indicated that the
28 genotypes were grouped into five distant clusters. The maximum contribution of
characters towards diversity was observed by days to first flowering, number of pods per
plant and seeds per pod. Thus, these traits may be given high emphasis while selecting the
lines for hybridization. The inter cluster distance was maximum between cluster II and
cluster IV. The highest intra cluster distance was found in cluster V. From the results it can
be concluded that the following genotypes viz., F-85-1 1347 (04). LG-92P-12-18 (08). RI4174-75
(023) and MTD45 I (G28) were identified as potential genotypes for higher seed
yield in soybean
Performance of Brinjal (Solanum melongena) Genotypes through Genetic Variability Analysis
No full textThe physiomorphological divergence was assessed in fifteen brinjal genotypes by using cluster mean analysis and mean difference to identify parental genotypes for future breeding program in order to develop new high yielding varieties in randomized complete block design with three replications. Plant height, days to first flowering, number of branch and number of fruits per plant have the highest percent of variations among the traits. The genotypes under the experiment were grouped into five clusters. The highest inter cluster distance was found between cluster III and IV followed by IV and V. According to relative contributions of the nine characters length of fruit and yield per plant have the prominent influence towards varietal improvement. Selecting genotypes from distant clusters probably provide promising recombinants and better segregants for future breeding platform
Therapeutic competence of dried garlic powder (Allium sativum) on biochemical parameters in lead (Pb) exposed broiler chickens
No full textThe study was conducted to assess the therapeutic competence of garlic (Allium sativum) in lead (Pb) exposed chickens. The experimental birds (n=350) were grouped into T0 (as control), T1, T2, T3 and T4. The birds of group T1 was provided with lead acetate at 100 mg/kg body weight. Group T2 had lead acetate at 100 mg/kg b.wt. + 1% garlic supplement, whereas group T3 was fed with lead acetate at 100 mg/kg b.wt. + 2% garlic supplement, and group T4 had lead acetate at 100 mg/kg b.wt. + 4% garlic supplement. The mean values (mg/dL) of uric acid, blood urea nitrogen, creatinine, cholesterol, triglycerides, low density lipoprotein, high density lipoprotein, and blood glucose in the birds of group T1 were significantly increased (p<0.01) on day 42 of post-treatment. Elevation of these parameters was suggestive for the pathological involvement of different organs like liver, kidney, muscles. Statistical analysis of variance indicated that lead acetate at 100 mg/kg b.wt. + 2% garlic supplement (T3) resulted significant (p<0.01) ameliorative effect on the biochemical parameters as compared to the group T2 and T4. In conclusion, potency of garlic in reversion of the values of the biochemical properties in Pb exposed chickens was close to the normal levels of the values
In-vitro displacement interaction of atenolol and amlodipine on binding with bovine serum albumin when co-administered
No full textThe binding of atenolol (selective β1-blocker) and amlodipine (calcium channel blocker) to bovine serum albumin (BSA) was studied by equilibrium dialysis method in order to have an insight into the binding chemistry of these two to BSA. Free atenolol concentration was increased due to addition of amlodipine which reduced the binding of the compounds to BSA. However, the free fraction was increased to a level as it was expected from direct competitive displacement while the free atenolol concentration was increased according to increasing the amlodipine concentration when only the BSA was present. The result obtained when the binding site was blocked by sufficient amount of amlodipine was that the increment of free concentration of atenolol was prominent. When no amlodipine was added the free concentration of atenolol was only 28% whereas this release was 93 % to 98.01% when amlodipine was added with increasing concentration
Effect of Nitrogen Levels and Weed Management on Yield Performance of BRRI Hybrid Dhan3 Under AWD Irrigation System
No full textExperiment was carried out at the Agronomy field of Bangladesh Rice Research Institute, Gazipur, during the period from December 2014 to May 2015 to investigate the response of different levels of N and methods of weeding on weed abundance and grain yield of BRRI hybrid dhan3 under alternate wetting and drying (AWD) irrigation condition. The treatments consisted of five N levels viz.,0, 60, 120,180 and 240 kg N ha-1 and four different weed control methods viz., Pre-emergence herbicide followed by 1HW, Pre-emergence followed by post emergence herbicide, Weed free by 3 hand weedings and Unweeded (control). The experiment was laid out in factorial RCB design with three replication. Pre-emergence application of prefer 18WP (Bensulfuran Methyl + Acetachlor) and post emergence herbicide Dhaman 300wp (Bispyribac sodium 18% + Bensulfuran methyl 12%) followed by one hand weeding effectively control all weeds (78-93%). In the experimental field, sedges and grass weeds were highly dominant over treatments. Based on summed dominance ratio (SDR), the most dominant weed species could be arranged in the order of Echinochloa crus-galli > Scirpus juncoides > Cynodon dactylon > Cyperus difformis > Marselia minuta > Monochoria vaginalis. Interaction of nitrogen levels and weeding methods had significant response on yield and yield components of hybrid rice. The highest (7.61 t ha-1) grain yield was obtained from the combination @ 180 kg N ha-1 with weed free treatments. Comparable higher grain yield was obtained from the combination of pre emergence herbicide of bensulfuranm methyl + acetachlor) + one hand weeding with 180 kg N ha (7.48 t ha-1) and the combination of pre + post-emergence herbicide (Bispyribac sodium 18% + Bensulfuran methyl 12%) with 180 kg N ha-1 (7.56t ha-1). The estimated optimum dose of nitrogen for Pre EH, Post EH and 3HW (weed free) were 173, 189.1 and 189.4 kg N ha-1 respectively for BRRI hybrid dhan3 under AWD irrigation system.Bangladesh Agron. J. 2017, 20(1): 13-24</jats:p
Plant–water relations in subtropical maize fields under mulching and organic fertilization
No full textThe plant–water relationship of maize under conservation practices needs to be assessed to quantify the effectiveness of the practices in conserving soil water for crop production. This study evaluated in three trials how straw and plastic film mulching and organic manure application could potentially change water fluxes in the root zone and increase maize yield. A mathematical model HYDRUS-1D was calibrated against the observed soil water content and drainage data to predict the water fluxes in the root zone soil. The model simulated soil water dynamics in the root zone with satisfactory performance (RMSE of 0.6–2.3%, CD of 0.37–1.41, NSE of 0.18–0.88, and R2 of 0.62–0.91) during both the calibration and validation periods. The model predicted the observed drainage in a lysimeter with only a 5.5–11.7% bias and actual evapotranspiration (ETc) with a 2.6–6.7% bias for the control conditions in all three trials when the model was provided with measured plant growth, soil properties, and weather data. Both measurement and modeling confirmed that mulching augmented soil water storage by reducing ETc, i.e., 0.24–0.37 mm d-1 by straw mulching and 0.05–0.24 mm d-1 by plastic mulching during the trials. Manure application did not affect the ETc rate and resulted in the highest grain yield (6.8–8.3 Mg ha˗1) followed by plastic mulching (6.1–8.1 Mg ha˗1) and straw mulching (5.3–7.5 Mg ha˗1). Manure application increased the harvest index by optimally allocating biomass because of a steady supply of water and nutrients. The straw mulch, plastic mulch, and manure treatments increased grain yield by 13%, 24%, and 35%, respectively, compared to the control condition. Large-scale implementation of these practices would lessen blue water scarcity in agriculture
Effect of tulsi (Ocium sanctum) leaves extract as a growth promoter in broiler productio
No full textThis study was conducted to determine the efficacy of tulsi (Ocimum sanctum) leaves extract as a growth promoter in broilers from January to June 2013 under Dept. of Pharmacology, Bangladesh agricultural University, Mymensingh-2022, Bangladesh. Fourty number of day old broiler chicks were taken and after seven days divided into two groups A and B. The B group was supplemented with tulsi leaves extract @ 1ml/litre in drinking water. Weekly observations were recorded for live body weight gain up to 5th weeks and blood test was performed at 17th and 35th days age of broiler to study hematological changes between control A and treatment B group. No significant difference in hematological changes was observed in both treatment and control group in 1st week of age but significant change in body weight gain was observed on 35th day. They are 1500 g (control) and 1650 g (treated). The cost of production and economic study was carried out and it was observed that net profit in control group was 5.33 T.K/Kg broiler and in treatment group was 13.33 T.K/Kg broiler. Bacterial sensitivity test was positive in case of Escherichia coli and produced zone of inhibition 0.5 cm and other was negative.Asian J. Med. Biol. Res. June 2017, 3(2): 226-232</jats:p
SAINT: self-attention augmented inception-inside-inception network improves protein secondary structure prediction
No full textSalinity-induced fluorescent dissolved organic matter influence co-contamination, quality and risk to human health of tube well water, southeast coastal Bangladesh
No full textSalinity in the drinking water of coastal Bangladesh results from a severe socio-economic, environmental and human health safety crisis. In this paper, we analyzed 120 tube well water samples from southeast coastal Bangladesh for eight trace metals (TMs). Contamination, quality and risk of TMs to human health of tube well water influenced by salinity-induced fluorescent dissolved organic matter (FDOM) were assessed using multiple pollution indices, GW quality index (GWQI), traditional health risk, and PARAFAC models. The mean values of EC, Fe, Cd, Cr, and As surpassed the limit set by local and international standards with significant spatial variations. The results of the GWQI showed that 52.5% of the samples were within the moderate-poor quality range in the study region. PARAFAC modeling identified three groundwater FDOM constituents with a coupling of humic acid (HA), fulvic acid (FA), and degraded fulvic acid (DFA)-like substances. Moreover, the positive correlations among EC, TMs, HA, FA, and DFA proved that salinity-induced FDOM had significant contributions to the dissolution potential of contaminants in the aquifer, hence increased the mobilization of TMs. Health risk models suggested that children are more susceptible to the non-carcinogenic and carcinogenic risks than adults at the community level. The carcinogenic risks of Cd, As, Pb, and Cr via oral exposure pathway indicated the highest carcinogenic risks for both adults and children. The findings also indicated that the salinity-derived FDOM-TMs complex is the key driver to groundwater co-contaminations and elevated health impacts. Besides, high concentrations of Fe and As are the key causal issues for sustainable water safety. Thus, strict water management and monitoring plans require preventing these contaminants for sustainable community well-being in the coastal region
Isolation and Identification of Mycobacterium from Extrapulmonary Specimen at NTRL, NIDCH
No full textObjective of the study was to see the frequency of isolation of Mycobacterium among different extrapulmonaryspecimens. The study was carried out at NTRL (National Tuberculosis reference laboratory), NIDCH Bangladeshduring January 2008-June 2009.This study was carried out retrospectively by analyzing NTRL laboratory data. Atotal of 514 extra-pulmonary specimens from different treatment centre of Dhaka was analyzed. Clinical specimens,such as lymph node aspirate, pleural fluid, urine, stool, gastric lavage, pus, ascitic fluid, cerebrospinal fluids, etc wascollected. Lowenstein-Jensen media was used for culture and antimicrobial susceptibility testing. Mycobacteria wereisolated from 113 extra-pulmonary specimens. Male and female ratio was almost equal among positive cases. Thecommonest source of isolation was lymph nodes(frequency 55.8%) and lymph node aspirate( frequency 68.4%)pleural fluid (frequency10.6%).Anti-microbial susceptibility of the isolates to the four first line anti-tuberculosis drugs,rifampicin, isoniazid, streptomycin and ethambutol was tested, susceptibility rate was 100%.The results suggest that,,emphasis should be placed on laboratory diagnosis and treatment of extra-pulmonary tuberculosis.Keywords: Pulmonary tuberculosis; extrapulmonary; Microbial Sensitivity Test; Laboratory Technics and Procedures;BangladeshDOI: 10.3329/jom.v11i2.5454J MEDICINE 2010; 11 : 128-130</jats:p
