December 2014
Effects of lycopene on hydroponic growth and productivity of Amaranthus hybridus L. under aluminium toxicity induced stress
Aluminium (Al) toxicity is an important stress factor for plants in acidic environments. Currently, there exists a dearth of research information on sustainable approaches that can mitigate the problem of Al toxicity in sub Saharan Africa. It is often assumed that since plants have the ability to synthesize their native antioxidants, they may not need supplementation to cope with stresses. To challenge this assumption,...
December 2014
Response of stay-green quantitative trait locus (QTL) introgression sorghum lines to post-anthesis drought stress
An experiment was carried out to evaluate the response of sorghum stay-green quantitative trait locus (QTL) introgression lines under induced post-flowering drought stress. The QTL introgression was done in 2006 to 2008 from known stay-green lines to the locally adapted varieties through marker assisted backcrossing. The field experiment was carried out in 2009/2010 and involved two irrigation levels and 14 genotypes...
December 2014
Synergistic action of Azospirillum brasilense combined with thiamethoxam on the physiological quality of maize seedlings
Plant growth promoting substances, either from biological or chemical origin, are widely used in modern agriculture. In this context, this study evaluated the physiological quality of maize seed treated with thiamethoxam and inoculated with Azospirillum brasilense. Initially, we tested bacterial growth on medium with increasing concentrations of thiamethoxam. We also evaluated the physiological quality of seeds through...
December 2014
Optimization of in vitro regeneration and microcorm induction in elephant foot yam (Amorphophallus paeoniifolius)
Elephant foot yam (Amorphophallus paeoniifolius) is a vegetatively propagated stem tuber crop. In this investigation we describe a highly competent and reproducible in vitro propagation of the plant from corm bud, petiole and young leaf explants. Friable callus was initiated from all the explants on modified MS medium (half the concentration of NH4NO3 and KNO3) supplemented with 0.5 mg l-1 each of benzyl amino purine...
December 2014
Antioxidant activity, phenols and flavonoids contents and antibacterial activity of some Moroccan medicinal plants against tomato bacterial canker agent
Medicinal and aromatic plants (MAP) belonging to 16 species, currently used in southern Moroccan traditional medicine, were evaluated here, firstly, for the action of their aqueous extracts against the bacterial canker agent of tomato in vitro. Then the phenolic contents, flavonoids contents and antioxidant capacities of these MAP extracts were estimated. Results obtained show that tested species exhibited biological...
December 2014
Biological active compounds from actinomycetes isolated from soil of Langkawi Island, Malaysia
Actinomycetes which were categorised as beneficial microorganisms have long been studied for their potential in producing secondary metabolites either for pharmaceutical or agricultural industries. In this study, 160 isolates of actinomycetes had been isolated using soil suspension method. All the 160 isolates were later tested for their potential to secrete secondary metabolites such as cellulases, mannanases,...
December 2014
Production and evaluation of instant emulsion base (“nchaâ€) from oil palm biogenic waste
Instant emulsion base (“ncha”) was produced from oil palm biogenic waste by extraction, concentration and encapsulation. Traditional products which were prepared and commercial product served as controls. The formulated instant product and the controls were analyzed for compositions, selected physico-chemical, microbial and organoleptic properties. Instant formulated product (IP) showed significantly...
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