Ismat Jahan Anee, Shamimul Alam, Rowshan Ara Begum, Reza Md Shahjahan et al.
Abstract Background The constant global need for food has created a demand for colossal food production. Every day the world requires more food than it is capable of growing and harvesting. Antibiotics have been used in healthy food products to promote growth and prevent disease in food-producing an...
Shamimul Alam Sheikh, Katsuhiko Kondo, Yoshikazu Hoshi
Drosera dichrosepala was exposed to different doses of Gamma radiation. Fragmented and fused chromosomes were observed as a consequences. Diffused centromeres in every fragment chromosome was detected by centromeric banding (Cd-banding) and was supported by its typical disjunction and totally lack o...
Shahina Akter, Sheikh Shamimul Alam
The karyotypes of 3 varieties in Cicer arietinum L. viz. BS-6, BS-7 and BS-8 were compared after differential staining with orcein, CMA and DAPI. The total chromatin length of BS-6 and BS-8 were 66.20 μm and 61.30 μm whereas 86.00 μm had in BS-7. The centromeric formulae of BS-6 was 12m+4sm, that of...
Syeda Sharmeen Sultana, Sheikh Shamimul Alam
Two species of the genus Solanum viz. S. nigrum and S. villosum found in Bangladesh were cytogenetically investigated to confirm their taxonomic status. S. nigrum and S. villosum were found to possess 2n=24 and 2n=48 chromosomes, respectively. The centromeric formula 22m+2sm was found in S. nigrum a...
Rabeya Begum, Sheikh Shamimul Alam, Gerhard Menzel, Thomas Schmidt
BACKGROUND AND AIMS: Dendrobium species show tremendous morphological diversity and have broad geographical distribution. As repetitive sequence analysis is a useful tool to investigate the evolution of chromosomes and genomes, the aim of the present study was the characterization of repetitive sequ...
M. A. K. Azad, Benukar Biswas, N. M. Alam, Sk. Shamimul Alam
Thirty yellow inbred lines of normal maize were evaluated for thirteen parameters at the experimental field of Hajee Mohammad Danesh Science and Technology University during 2010-11 to study the genetic divergence using multivariate analysis. The thirty inbreds fell into six distinct clusters. The i...
Masuda Khatun, Sheikh Shamimul Alam
Two wild jute species, namely Corchorus trilocularis and C. pseudo-olitorius, were investigated after staining with orcein, CMA and DAPI. In addition, activities of 3 isozymes viz. esterase, acid phosphatase and peroxidase were studied. These 2 spp. were found to possess 2n=14 chromosomes. Satellite...
Md. Yahia Zaman, Sheikh Shamimul Alam
Two F1 hybrids namely TIA and PARROT and an open pollinated cultivar viz. TAJ-88 of Momordica charantia L. (bitter gourd) were cytogenetically investigated. The 3 cultivars were found to possess 2n=22 metacentric chromosomes. However, a plant specimen of cultivar TIA had 2n=44 chromosomes. The extre...
Rabeya Begum, Falk Zakrzewski, Gerhard Menzel, B. Weber et al.
BACKGROUND AND AIMS: The cultivated jute species Corchorus olitorius and Corchorus capsularis are important fibre crops. The analysis of repetitive DNA sequences, comprising a major part of plant genomes, has not been carried out in jute but is useful to investigate the long-range organization of ch...
Naznin Hiron, Nazmul Alam, Fakhruddin Ali Ahmed, Rabeya Begum et al.
Hibiscus cannabinus var. HC-2 (2n=2x=36) and H. sabdariffa var. HS-24 (2n=4x=72) were cytogenetically and biochemically studied to elucidate their genomic homology. Both the species possessed only metacentric chromosomes. The range of chromosome length of these 2 species was 1.43–3.80 μm. Both the s...
Nasrin Sultana Jessy, Rokeya Begum, Masuda Khatun, Sheikh Shamimul Alam
The karyotypes of 4 Haworthia species viz. H. papillosa Haw., H. fasciata Haw., H. limifolia Marloth and H. reinwardtii Haw. were compared after differential staining with orcein, CMA and DAPI. In H. papillosa and H. fasciata 2n=14 chromosomes were found. H. limifolia and H. reinwardtii possessed 2n...
Masuda Khatun, Syeda Sharmeen Sultana, Hosne Ara, Mohammad Nurul Islam et al.
Karyotypes of 3 wild Corchorus spp. of Tiliaceae, namely C. tridens, C. fascicularis and C. pseudo-capsularis, were investigated after differential staining with orcein, CMA and DAPI. In addition, the activities of 3 isozymes, esterase, acid phosphatase and peroxidase in these 3 species were compare...
Sheikh Shamimul Alam, Atikur Rahman
The fluorescent banded somatic karyotypes of Corchorus capsularis, C. olitorius and C. trilocularis showed 14 more or less equal sized metacentric chromosomes each. The orcein stained interphase nuclei revealed the presence of a big nucleolus surrounded by a clear non-staining zone. Moreover, the nu...
Meher Nigar Mahbub, A. N. M. Rubaiyath Bin Rahman, Sheikh Shamimul Alam
Karyotype analysis of 3 released varieties in Vigna radiata L. viz. Barimung-2, Barimung-3, Barimung-5 has been carried out after staining with orcein, CMA and DAPI. These varieties were found to possess 2n=22 chromosomes. Four terminal CMA-positive bands were found in Barimung-2, 3 such bands in Ba...
Yunus Ahmed, Md. Mahfujur Rahman, Md Shafiul Alam, Mohammad Islam Miah et al.
Md Shafiul Alam, Md Ismail Hossain, Md. Alamgir Hossain, Md Shamimul Haque Choudhory et al.
Fault current level in inverter based distributed generation (IBDG) integrated grid system increases manifold due to high level of IBDG penetration. Nevertheless, for having less detrimental effect of fault in the system fault current must be kept within specified limit as per new grid code. This pa...
Mousona Islam, Sheikh Shamimul Alam
One released (HC-95) and 2 wild (CPI-72126 and KE-1) germplasms of Kenaf (Hibiscus cannabinus L.) were studied to characterize their karyotypes. These germplasms were found to possess 2n=36 chromosomes. Except 2 sub-metacentric chromosomes in CPI-72126 and 1 in HC-95, all the chromosomes of these ge...
Mahmuda Khandaker, M. I. Hoque, Sheikh Shamimul Alam
Differential staining with orcein, CMA and DAPI were used to characterize the karyotypes of three cultivated varieties of Lens culinaris Medik viz. Barimasur-2, Barimasur-3, Barimasur-4. In Barimasur-2 and Barimasur-3, 2n=14 chromosomes were found. Whereas in Barimasur-4, 2n=15 chromosomes were obse...
Sheikh Shamimul Alam, Sharmin Selina Azhar, R. H. Sarker, M. A. Zaman
Although Crinum pratense and C. defixum have similar karyomorphology i.e. 2n=22 chromosomes, diffuse type of interphase nuclei and continuous type of prophase chromosomes when stained with orcein, yet a major variation, such as two CMA-positive bands in C. pratense and one in C. defixum at mataphase...
Reza Md Shahjahan, Afroja Karim, Rowshan Ara Begum, Mohammad Shamimul Alam et al.
The electrophoretic banding pattern of esterase isozymes were examined in eighteen different tissues of Nile tilapia after staining with α and β naphthyl acetate as substrate. The tissues were anterior-, mid-, tailmuscle (ventral and tip region), buccal muscle, stomach, fore-, mid-, hind-gut, live...