July 2011
Biological remediation of polychlorinated biphenyls (PCB) in the soil and sediments by microorganisms and plants
It is a known fact that the environment is suffering from severe contamination as a result of various uncontrolled activities of man and chemicals in the biosphere. This acute and diffuse contamination of air, soil and water by metals, chemicals and metalloids causes wide environmental concerns, which if left unchecked will be detrimental to man and organisms. Biological methods for cleaning of the environment...
July 2011
An overview of Citrus aurantium used in treatment of various diseases
Citrus aurantium (bitter orange) is a plant belonging to the family Rutaceae, The most important biologically active constituents of the C. aurantium fruits are phenethylamine alkaloids octopamine, synephrine, tyramine, N-methyltyramine and hordenine. It is rich in vitamin C, flavonoids and volatile oil. Synephrine is a primary synthesis compound with pharmacological activities such as...
July 2011
Evaluation of the relative weed competitiveness of upland rice varieties in Sierra Leone
In Sierra Leone, weed management in upland rice production is a major constrain and yields are seriously reduced. Studies were conducted during the wet cropping season of 2007 and 2008 at Rokupr Agricultural Research Centre (RARC) in the upland ecology to assess the competitiveness of different rice varieties and to identify plant parameters responsible for their competitiveness. The results indicated that rice...
July 2011
Actinorhizal plants of Kumaun Himalaya and their ecological significance
Actinorhizal plants are important in having symbiotic association with actinomycete Frankia. Nitrogen (N) fixation by actinorhizal plants is a major source of fixed N in diverse and widespread ecosystems including forests, bogs, swamps, coastal dunes, landslides, glacial deposits, shrublands, prairies and deserts. They play important roles in wild land ecosystem function and are used in land...
July 2011
Molecular detection of a virus infecting carrot and its effect on some cytological and physiological parameters
An experiment was conducted to determine the physiological and cytological changes in carrot (Daucus carota L.) due to infection of cucumber mosaic virus. The virus isolate causing mottling was detected by reverse transcriptase polymerase chain reaction (RT-PCR) by showing amplification of the expected size of 650 base pair (bp)deoxyribonucleic acid (DNA) band. Regarding the physiological changes,...
July 2011
Studies on antimicrobial activities of some selected Ferns and Lycophytes in Eastern India with special emphasis on ethno-medicinal uses
The occurrences of antimicrobial activity of ferns were studied. The present paper deals with the antimicrobial activities of some ethno-medicinally important ferns which are very common in West Mednapore District as well as South West Bengal, against Gram-positive and Gram-negative bacterial pathogens. The plants were extracted with different solvents (70% Ethanol, methanol and acetone) and controlled by deionized...
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