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Now showing items 21-30 of 74
Determination of the quality of environmental water using GC-MS based faecal sterol analysis
(North-West University, 2014)
Faecal indicator bacteria have traditionally been used in the detection of faecal pollution in water, but due to concerns about the lack of reliability of these indicators, alternative methods have been developed. One of ...
Phenotypic and biochemical characterisation of the causal agent of bacterial leaf streak of maize
(North-West University, 2015)
Maize is the staple food for a majority of people in Southern Africa, but plant diseases are responsible for at least 10% of crop production losses. Bacterial leaf streak (BLS) of maize was first reported in South Africa ...
Investigation of the microbial diversity and functionality of soil in fragmented South African grasslands along an urbanization gradient
(2010)
The diversity of microorganisms and the influence of their enzymatic activities in soil are critical to the maintenance of good soil health. Changes in these parameters may be the earliest predictors of soil quality changes, ...
DNA barcoding of different earthworms' species and their response to ecotoxicological testing
(North-West University, 2015)
The ecotoxicological literature reveals that countless researchers worldwide rely upon informally identified commercial earthworm stocks for laboratory bioassays. The primary aim of this study was to investigate laboratory ...
The role of gut microbes on the efficacy of Bt maize against lepidopteran stem borers
(North-West University, 2015)
The evolution of pest resistance to Cry proteins threatens the long-term use of Bt crops. Busseola fusca developed resistance to Bt maize in South Africa but the mechanism of resistance is not well understood. According ...
Community structure of gut microbes in Busseola fusca (Lepidoptera : Noctuidae)
(North-West University, 2015)
Bt-maize is engineered to express insecticidal toxins derived from the bacterium Bacillus thuringiensis and has been shown to be very effective against pests like Busseola fusca.However, resistance of this pest against ...
Diversity and characteristics of yeasts in water sources of the North West Province
(North-West University, 2012)
Yeasts form an important part of many ecosystems and significantly contribute to biodiversity. However, yeast biodiversity in the North West Province remains largely unexplored. The aim of this study was to determine the ...
Surface water quality of the North West Province based on physico–chemical properties and faecal streptococci levels
(North-West University, 2012)
Water resources in the North West Province are characterised by an overall scarcity due to non–perennial rivers being the dominating water sources. However, increases in water demand from all social, environmental and ...
The incidence of mycotic and mycotoxigenic Fusarium in a peri-urban food-garden environment
(North-West University, 2007)
The present study was conducted in Phokeng, a peri-urban residential area outside Rustenburg in the North-West Province. To supplement their restricted diet, households of low socio-economic status often maintain food ...
Diversity of gut–microorganisms in Bt–resistant and Bt–susceptible larvae of the maize stem borer (Busseola fusca) (Lepidoptera : Noctuidae)
(North-West University, 2012)
Maize is one of Africa’s main food sources. It is therefore important to protect this crop
against pests such as the maize stem borer Busseola fusca. Genetically modified Bacillus
thuringiensis (Bt) maize has been shown ...