| 1. |
- Ahmed, Bulbul, et al.
(författare)
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A review on natural sweetener plant - Stevia having medical and commercial importance
- 2011
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Ingår i: Agronomy Journal. - : Croatian society of agronomist. - 0002-1954. ; 73:1-2, s. 75-91
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Forskningsöversikt (refereegranskat)abstract
- Stevia is a perennial herb that belongs to the Asteraceae family. It is a natural sweetener plant and estimated to be 300 times sweeter than cane sugar. The leaves of stevia are the source of diterpene glycosides, viz. stevioside and rebaudioside. Stevioside is regenerated as a valuable natural sweetening agent because of its relatively good taste and chemical stability. Now it is being cultivated in Japan, Taiwan, Philippines, Hawaii, Malaysia and overall South America for food and pharmaceutical products. Products can be added to tea and coffee, cooked or baked goods, processed foods and beverages, fruit juices,
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| 2. |
- Ahmed, Bulbul, et al.
(författare)
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Establishment of an Indirect Genetic Transformation Method for Arabidopsis thaliana ecotype Bangladesh
- 2011
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Ingår i: Journal of Central European Agriculture. - : Journal of Central Europian Agriculture (JCEA). - 1332-9049. ; 12:3, s. 519-528
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Tidskriftsartikel (refereegranskat)abstract
- Arabidopsis thaliana is a small flowering plant belonging to the Brassicaceae family, which is adopted as a model plant for genetic research. Agrobacterium tumifaciensmediated transformation method for A. thaliana ecotype Bangladesh was established. Leaf discs of A. thaliana were incubated with A. tumefaciens strain LBA4404 containing chimeric nos. nptII. nos and intron-GUS genes. Following inoculation and co-cultivation, leaf discs were cultured on selection medium containing 50 mg/l kanamycin + 50 mg/l cefotaxime + 1.5 mg/l NAA and kanamycin resistant shoots were induced from the leaf discs after two weeks. Shoot regeneration was achieved after transferring the tissues onto fresh medium of the same combination. Finally, the shoots were rooted on MS medium containing 50 mg/l kanamycin. Incorporation and expression of the transgenes were confirmed by PCR analysis. Using this protocol, transgenic A. thaliana plants can be obtained and indicates that genomic transformation in higher plants is possible through insertion of desired gene. Although Agrobacterium mediated genetic transformation is established for A. thaliana, this study was the conducted to transform A. thaliana ecotype Bangladesh.
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| 3. |
- Hridoy, Md Rafiul Sabbir, et al.
(författare)
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A Web Based Belief Rule Based Expert System for Assessing Flood Risk
- 2017
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Ingår i: iiWAS'17. - New York : ACM Digital Library. - 9781450352994 ; , s. 434-440
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Konferensbidrag (refereegranskat)abstract
- Natural calamities such as flooding, volcanic eruption, tornado hampers our daily life and causes many sufferings. Flood is one of the most catastrophic among the natural calamities. Assessing flood risk helps us to take necessary steps and save human lives. Several heterogeneous factors are used to assess flood risk on the livelihood of an area. Moreover, several types of uncertainties can be associated with each factor. In this paper, we propose a web based flood risk assessment expert system by combining belief rule base with the capability of reading data and generating web-based output. This paper also introduces a generic RESTful API which can be used without writing the belief rule based expert system from scratch. This expert system will facilitate the monitoring of the various flood risk factors, contributing in increasing the flood risk on livelihood of an area. Eventually, the decision makers should be able to take measures to control those factors and to reduce the risk of flooding in an area. Data for the expert system has been collected from a case study area by conducting interviews.
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| 4. |
- Rahman, Motiur, et al.
(författare)
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A Biotechnological Approach for the Production of Red Gerbera (Gerbera Jamesonii Bolus)
- 2014
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Ingår i: Nova Journal of Medical and Biological Sciences. - Canada : Nova Explore Publications. - 2292-793X .- 2292-793X. ; 2:1, s. 1-6
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Tidskriftsartikel (refereegranskat)abstract
- An in vitro propagation of a red Gerbera (Gerbera jamesonii) variety was achieved by culturing flower bud, leaf segments and flower stalk segments of 80 days old field grown plants on Murashige and Skoog (MS) medium supplemented with different concentration (1.0-6.0 mg/l) of 6-benzyl adenine (BA) in combination with single concentration (1.0 mg/l) of α-naphthalene acetic acid (NAA). Lower concentration of BA (1.0 and 2.0 mg/l) with NAA induced the explants to form callus. On the other hand when the explants were cultured in higher concentration (5.0 mg/l) of BA produced shoots and 5.0 mg/l BA with 1.0 mg/l NAA was found to be the best for shoot proliferation of the three explants optimum response was obtained from flower buds. Further multiplication of shoots occurred upon transfer of shoot clumps to BA containing MS medium. Regenerated shoots were rooted in MS medium with indole-3-acetic acid (IAA) or indole-3-buteric acid (IBA) and maximum frequency (81%) of rooting with highest number (4) of roots per shoot was achieved in MS medium fortified with 0.3 mg/l IBA. The rooted shoots were acclimatized and successfully established in soil under natural environment with maximum 84% survivability.
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