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Theses and Dissertations (Plant Science): Recent submissions
Now showing items 41-60 of 219
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(University of Pretoria, 2014-04)Twenty southern African plants were selected based on traditional use. The ethanol extracts were tested for their antimicrobial activity against P. acnes (ATCC 11827) [Propionibacterium acnes (Gilchrist) Douglas and Gunter ...
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(University of Pretoria, 2014-04)Tuberculosis is one of the world’s deadliest diseases. It is caused by the bacterium Mycobacterium tuberculosis. Two groups of samples: Quinones and Garlic polysulfide mixtures were assessed for their antituberculosis ...
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(University of Pretoria, 2014-04-30)The use of plant extracts or derivatives in the field of medicine, nutraceuticals and cosmeceuticals has occurred for a long time. This is due to the diversity of compounds present in plants. The cosmetic industry has a ...
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(University of Pretoria, 2014)Ethanol extracts of twenty Southern African plants were prepared and tested for their in vitro cytotoxic activity against various cancerous and non-cancerous cell lines. The cancerous cell lines included human melanoma ...
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(University of Pretoria, 2015)Ethnopharmacological relevance: Medicinal plants still play an integral part in the livelihood of people in the rural areas. The aim of this study was to document information about the medicinal plants used by Shangaan ...
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(University of Pretoria, 2015)The defence response of maize (Zea mays) to its foliar pathogen, Cercospora zeina, is not well characterized at the molecular and genetic level. C. zeina causes grey leaf spot (GLS), and high infection levels result in ...
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(University of Pretoria, 2015)Tuberculosis (TB) is an infectious disease, mostly affecting lungs or abdominal area. The causative agent of TB is a bacterium called Mycobacterium tuberculosis; it is the second leading cause of death in the world. Plants ...
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(University of Pretoria, 2015)Blue light and the perception thereof plays a fundamental role in the survival of all organisms in changing environments. Cercospora zeina, is the causal agent of grey leaf spot (GLS) disease of maize plants in Southern ...
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(University of Pretoria, 2020)Inflammation and pain are major clinical signs of sexually transmitted infections (STIs) such as gonorrhoea, chlamydia, trichomoniasis, bacterial vaginosis and more recently, Mycoplasma genitalium. Delayed treatment of ...
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(University of Pretoria, 2020)Tylosema esculentum, T. fassoglense, and T. angolense are legume species found across southern Africa that produce highly nutritious seeds and tubers. These species have significant agricultural potential but are severely ...
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(University of Pretoria, 2019)Although the unidirectional impacts of benefactor species on associated beneficiary species have been well-established, beneficiary feedback effects (i.e. the impact of beneficiaries on their benefactors) and benefactor-mediated ...
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(University of Pretoria, 2019)Exserohilum turcicum is the hemibiotrophic causal agent of Northern leaf blight of maize and sorghum. Despite the global importance of this yield-limiting pathogen, knowledge regarding genes contributing to disease development ...
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(University of Pretoria, 2019)Cassava is staple to millions in Africa, yet cassava brown streak disease (CBSD) greatly threatens cassava production. This study reports the mechanism of cassava’s resistance to CBSD using Ugandan cassava brown streak ...
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(University of Pretoria, 2018)Higher education faces the challenge of high student attrition, which is especially disconcerting if associated with low participation rates, as is the case in South Africa. Recently, the use of learning analytics has ...
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(University of Pretoria, 2016)Epsilon toxin (Etx) produced by Clostridium perfringens type D is responsible for a fatal Enterotoxemia (Pulpy Kidney Disease) in economically significant livestock such as sheep and goats. The only practical means of ...
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(University of Pretoria, 2017)The Euphorbia L. genus has over 2000 species and is regarded as the largest genus of flowering plants. Euphorbia damarana is a small tree belonging to the Euphorbiceae family which grows in the eastern parts of Namibia. ...
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(University of Pretoria, 1978)Lake Chrissie represents a shallow, brackish, inland water body which can be described as a lake on the basis of its size and permanent character. A relatively small amount of algological sutdies have been done on inland ...
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(University of Pretoria, 2017)Background: Sexually transmitted diseases (STD's) have a major impact on sexual and reproductive health worldwide. Each year, the World Health Organization (WHO) estimates 448 million new cases of curable STD's are diagnosed. ...
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(University of Pretoria, 1969)Citrus black spot caused by Guignardia Citricarpa Kiely, is the most serious fungal disease affecting citrus in the Republic of South Africa. The disease is also reported from Swaziland, Rhodesia and Mozambique and in ...
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(University of Pretoria, 2015)South Africa is one of the most biologically diverse countries in the world, and harbours one of the richest floras. Vast areas of the country remain under-collected, and a large proportion of species are taxonomically ...
Now showing items 41-60 of 219