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Browsing Theses and Dissertations (Plant Science) by Type "Dissertation"
Now showing items 1-20 of 141
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(University of Pretoria, 2021-12-08)Alien invasions are a global concern, with impacts on native biodiversity. Invasive species may be introduced to new regions for many reasons, with ornamental horticulture being one of the major pathways for the entry of ...
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(University of Pretoria, 2006-08-11)Please read the abstract/summary in the section, 00front/07back, of this document.
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(University of Pretoria, 2022)Cercospora zeina the causal agent of grey leaf spot of maize causes up to 67% yield losses when susceptible maize cultivars are planted. Variations in the levels of aggressiveness of C. zeina isolates have been reported ...
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(University of Pretoria, 2000)Please read the abstract in the dissertation.
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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, 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, 2011-09-21)Diabetes mellitus (DM) represents a series of metabolic conditions associated with hyperglycemia and caused by defects in insulin secretion, and/ insulin action. Exposure to chronic hyperglycemia may result in microvascular ...
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(University of Pretoria, 2004-04-01)There are 500 Helichrysum (Asteraceae) species world wide of which 245 occur in South Africa.The South African species display great morphological diversity and are, therefore classified into 30 groups (Hilliard, 1983). ...
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(University of Pretoria, 2006-06-02)Many South Africans continue to use traditional medicine in their daily lives as an alternative form of health care, also as part of their cultural heritage. Medicinal plants are proving to be an important source of novel ...
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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, 2012)The phytochemical investigation of an ethanol extract of Artemisia afra, led to the isolation of six known compounds, Acacetin (1) 12α,4α-dihydroxybishopsolicepolide (2), Scopoletin (3) α-amyrin (4), Phytol (5) and a ...
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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, 2010-09-04)The ethanol extract of A. phylicoides was investigated for its antioxidant activity using the DPPH scavenging method. The extract showed good antioxidant results with a EC50 value of 10.64 ± 0.0842 µ/ml. The extract was ...
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(University of Pretoria, 2022)Ethnopharmacological relevance: Pappea capensis (Sapindaceae), traditionally used by VhaVenda people in South Africa to treat malaria, was evaluated for antiplasmodial activity and cytotoxicity. Materials and methods: ...
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(University of Pretoria, 2013)South Africa has one of the richest and diverse floras in the world with over 30000 species of higher plants. There are approximately 3000 species of medicinal plants in South Africa. The discovery of active compounds in ...
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(University of Pretoria, 2005-05-19)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2007-10-15)Please read the abstract (Summary) in the section 00front of this document
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(University of Pretoria, 2006-06-05)Please read the abstract in the section 00front of this document
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(University of Pretoria, 2021)Themeda triandra Forssk. (Poaceae) is a polymorphic species, with some forms that grow to heights of over 2m and others that grow only up to 30cm. They have leaf colours varying from yellow-green to blue-green and even ...
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(University of Pretoria, 2022)Ethnopharmacological relevance: Sexually transmitted diseases (STDs) is a major global concern of an ever-growing population. The daily rate of infectious STDs increases by an estimate of one million infections. The ...
Now showing items 1-20 of 141