Establishment of a suitable regeneration protocol for rapid propagation of Piper nigrum L. through in vitro culture
Jahangirnagar University Journal of Biological Sciences
by Md Raihan Iqbal Raju, Merina Junaki, Mohd Talim Hossain
1y ago
An experiment was performed to establish a suitable regeneration protocol for the rapid propagation of Piper nigrum L. using nodal segments and leaf tissues as explants through direct and indirect organogenesis. After surface sterilization, several types of explant were inoculated onto gelled MS medium containing various concentrations and combinations of growth regulators for callus and direct shoot induction. The highest callus induction frequency was 92% and 84% in the case of leaf tissues and nodal segments, respectively, in gelled MS medium containing 2.0 mg/l 2,4-D. Multiple shoots (6.43 ..read more
Visit website
Karyotype comparison and characterization of two cauliflower cultivars from Bangladesh
Jahangirnagar University Journal of Biological Sciences
by Ashma Ahmed Warasy
1y ago
Two cauliflower cultivars were karyotyped for correct characterization after orcein staining. Both cultivars have a simple chromocenter type of interphase nuclei and a gradient type of prophase chromosomes, indicating that they descended from a common ancestor. In addition, both strains were found to have 2n=18 chromosomes with an almost identical range of chromosome lengths. In terms of overall length, the white snow cultivar is almost 7 m shorter than the fresh market cultivar, indicating the presence of chromatin length diversification between specimens. In none of the cases was there a not ..read more
Visit website
Molecular characterization of endophytic fungi-Daldinia eschscholtzii from Aloe vera plants in Bangladesh
Jahangirnagar University Journal of Biological Sciences
by Md Sabbir Ahmmed, Md Maniruzzaman Sikder, Nuhu Alam
1y ago
Aloe vera (L.) Burm. f. is a plant of health, beauty and medicine that is widely used in Bangladesh with high demand. An experiment was performed to find out the association of endophytic fungus with Aloe vera leaves and to assess their growth behavior on different culture media, temperatures and pH. The endophytic fungus-Daldinia eschscholtzii (Ehrenb.) Rehm. was identified based on the morphological and molecular characterization using the ITS-rDNA sequence. Various solid culture media were used to assess the fungal growth, and temperature regimes i.e., 15℃, 20℃, 25℃, 30℃, 35℃ were investiga ..read more
Visit website
Population, habitat use pattern and feeding behaviour of Irrawaddy squirrel (Callosciurus pygerythrus Geoffroy, 1831) in Jahangirnagar University campus
Jahangirnagar University Journal of Biological Sciences
by Jenia Samsad, M Monirul H Khan
1y ago
The study was conducted to know the population, habitat use pattern and feeding behaviour of Irrawaddy Squirrel (Callosciurus pygerythrus) in Jahangirnagar University Campus from October 2016 to September 2017. The population density had slightly varied in different months; it was the highest in May (997.58/km2) and the lowest in January (612.98/km2). The mean population density was 841.34/km2 (SD= 135.98). The visibility was the highest at 0900h (15.71%) and the lowest at 1100h (7.07%). The monthly variation was the highest in May (9.88%) and the lowest in January (6.07%), which was probably ..read more
Visit website
Quality assessment of ciprofloxacin tablets - an antimicrobial drug marketed in Bangladesh
Jahangirnagar University Journal of Biological Sciences
by Taslima Akter, Mohammed Monir Uddin, Md Ataur Rahman, Md Saiful Islam, Md Rafiquzzaman
1y ago
Ciprofloxacin is a syntheticfluroquinolone derivative. It is prescribed as a potent antibiotic to treat bacterial infections. An attempt was made to assess the quality of six brands of ciprofloxacin tablets marketed in Bangladesh. Various physicochemical tests, viz., weight variation, hardness, friability, disintegration, dissolution and assay for the content of the active ingredient, were performed in accordance with the methods described in the United States Pharmacopoeia 38 (USP 38). UV-Vis spectrophotometric technique was used for dissolution test while High Performance Liquid Chromatograp ..read more
Visit website
Occurrence of Enterobacteriaceae in medicinal plants sold in local markets of Savar, Dhaka
Jahangirnagar University Journal of Biological Sciences
by SM Rokon Ud Doula, Nazia Afrin, Rasheda Yasmin Shilpi
1y ago
Medicinal plants can be contaminated with a large diversity of potentially pathogenic bacteria. Ten medicinal plant samples Plantago psyllium, Terminalia bellirica, Terminalia chebula, Phyllanthus emblica, Ocimum basilicum, Glycyrrhiza glabra, Withania somnifera, Andrographis panicula, Bombax ceiba were collected from Amin Bazar and Savar of Savar area to study the presence and abundance of Enterobacteriaceae family bacteria in the herbal plant samples. A total of fifty five (55) bacterial isolates have been isolated from different medicinal plant samples using spread plate method on nutrient ..read more
Visit website
Chromosomal study of Xanthomonas atrovariens 'Variegatum Monostrum' a member of Araceae
Jahangirnagar University Journal of Biological Sciences
by Ashma Ahmed Warasy
3y ago
Abstract not available Jahangirnagar University J. Biol. Sci. 9(1 & 2): 133-137, 2020 (June & December ..read more
Visit website
Assessment of molecular and clinical characteristics in blood transfusion dependent HbE/β-thalassemia patients
Jahangirnagar University Journal of Biological Sciences
by Nazneen Naher Islam, Mohabbat Hossain, Shuvo Chandra Das, Sabrina Alam Seuti, Mahmood A Chowdhury
3y ago
Hb E/β-thalassemia is one of the most common forms of hemoglobinopathies worldwide. This life-threatening genetic disorder is not completely curable. This study aims to investigate the correlation of mutations with clinical manifestations among the transfusion dependent Hb E/β- thalassemia patients using molecular, hematological and biochemical methods. A total of 60 blood samples were collected from regular blood transfusion-dependent HbE/β-thalassemia patients. Mutations within HBB gene were analysed by Sanger sequencing, BLAST 2.0, HbVar database and Alibaba 2.1. Clinical data were analysed ..read more
Visit website
Three new Angiospermic (Orchidaceae) records from Bangladesh
Jahangirnagar University Journal of Biological Sciences
by Mohammed Kamrul Huda, Mohammed Mozammel Hoque, Md Owahidul Alam
3y ago
Coelogyne schwadtkii Danell., Cleisostoma williamsonii (Rchb.) Garay. and Phalaenopsis difformis (Wall. ex Lindl.) Kocyan & Schuit. of the family Orchidaceae collected from southeast part of the country have been reported here as new angiospermic records for Bangladesh flora. Detailed critical examination of the specimens of these species has been made to confirm their taxonomic identification. Detailed taxonomic description with flowering time, ecology, geographical distribution, illustration and photographs of each species has been provided. Jahangirnagar University J. Biol. Sci. 9(1 &am ..read more
Visit website
Floristic composition and plant species diversity in and around the brickfield areas of Savar-Dhamrai region of Dhaka district
Jahangirnagar University Journal of Biological Sciences
by Saiful Islam, Shayla Sharmin Shetu, Md Abdur Rahim, Saleh Ahammad Khan
3y ago
This study has confirmed the occurrence of a total of 181 species of vascular plants under 133 genera and 51 families and estimates the plant species diversity in and around the brickfield areas of Savar-Dhamrai region of Dhaka district. Of these, six species were pteridophytes, 175 were Angiosperms, and 144 species were economically important. Five families, composed of six species, belonged to Pteridophyta, 40 families, consist of 128 species, to Magnoliopsida (dicotyledons) and six families, comprised of 47 species, to Liliopsida (monocotyledons). Total of 161 species were herbs, 14 were sh ..read more
Visit website

Follow Jahangirnagar University Journal of Biological Sciences on FeedSpot

Continue with Google
Continue with Apple
OR