Browsing Doctoral Degrees (Research Centre for Plant Growth and Development) by Issue Date
Now showing items 1-20 of 30
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Alkaloids from three South African Crinum species.
(2000)The alkaloid content of three Crinum species namely C. bulbispermum, C. macowanii and C. moorei was investigated. The ethanolic extracts of C. bulbispermum yielded seven compounds. The new alkaloids 8α-ethoxyprecriwelline, ... -
Evaluation of anthelmintic, antiamoebic and antibacterial activity in traditional South African medicinal plants.
(2001)Traditional medicine in southern Africa draws upon a vast selection of plants to treat gastrointestinal disorders such as diarrhoea and intestinal parasites. The evaluation of these plants for biological activity is ... -
Root-stimulating activity from various gelling agents used in tissue culture.
(2003)Extracts of gelling agents have been shown to stimulate rooting and this study was initiated to investigate the presence of root stimulating substances in gelling agents. After screening a number of gelling agents, four ... -
Anti-bacterial and anti-inflammatory activity of medicinal plants used traditionally in Lesotho.
(2003)A significant potion of the population in Lesotho relies on traditional medicine to meet its health care requirements. Traditional healers and herbalists were interviewed from Qacha's Nek (Highlands) and Mohale's Hoek ... -
Genetic transformation and micropropagation of Thapsia garganica L. - a medicinal plant.
(2003)No abstract available. -
Genetic modification in Pinus patula using transgenic technology.
(2006)Progress in tree biotechnology initially trailed behind agricultural crops due to their long life cycle, difficult tissue culture and regeneration protocols, and their abundance in natural forests. However, rapid global ... -
Micropropagation and pharmacological evaluation of Boophone disticha.
(2013)Boophone disticha (L.f.) Herb is one of the most widely distributed bulbous species in southern Africa. Of Africa’s many bulbous plants, it is widely known for its poisonous and medicinal properties. It is of considerable ... -
Flower abscission in potted Plectranthus.
(2013)Transport and post-harvest handling of flowers both cut and potted is one of the greatest challenges in the horticulture industry (REDMAN et al., 2002). Ethylene-induced flower abscission is responsible for the loss of ... -
Medicinal properties and in vitro responses of Mayenus senegalensis (Lam.) exell.
(2003)No abstract available. -
Differential gene expression in germinating and thermoinhibited achenes of Tagetes minuta L.
(2003)When imbibed at their optimum germination temperature of 25°C, achenes of Tagetes minuta L. germinate over a period of approximately 48 h. At temperatures of between 35°C and 39°C, the achenes do not germinate but enter ... -
In vitro propagation of enset (Ensete ventricosum (Welw.) Cheesman)
(2003)Enset (Ensete ventricosum) is an important food crop that is cultivated in Ethiopia. In vitro propagation: zygotic embryo culture, shoot tip culture, callus culture and somatic embryogenesis were investigated for this crop. ... -
Micropropagation of Hypoxis colchicifolia Baker, a valuable medicinal plant.
(2004)The large geophytic monocotyledon, Hypoxis colchicifolia Baker, has been identified for the importance of its corm extracts in the development of a potential non-toxic prodrug for the treatment of inflammation, certain ... -
A pharmacological study of some Nigerian medicinal plants.
(2005)Petroleum ether, dichloromethane, and 80% ethanol extracts of 15 plant species collected in Nigeria were screened for in vitro antibacterial, anti-inflammatory and antimalarial activities. Antibacterial activity was tested ... -
Cultivation of Combretum bracteosum (Hochst.) Brandis.
(2001)In maximizing South Africa's floral diversity, plant propagators have begun exploiting the rich array of indigenous plants, especially those with horticultural potential. Plants previously unavailable to the professional ... -
Crinum moorei : propagation and secondary metabolite production in vitro.
(2002)As an alternative to conventional methods of vegetative propagation, micropropagation attracts much attention, because the levels of multiplication are increased, somaclonal variation is limited and disease-free material ... -
An evaluation of plants used in eastern Nigeria in the treatment of epilepsy and convulsion.
(2002)Schumanniophyton magnificum and Glypheae brevis are important medicinal plants growing wild in the West African rain forest. They are used in folkloric medicine in the treatment of epilepsy and convulsion as well as for ... -
The effect of charcoal on tissue morphogenesis in vitro.
(2000)The effect of activated charcoal, autoclaving and culture media on sucrose hydrolysis in tissue culture media was investigated. Activated charcoal acidified an aqueous sucrose (5%) solution and culture media by about 1 ... -
Monocarpic senescence in Bidens pilosa L.
(2000)Senescence was examined in the economic weed Bidens pilosa, with the objectives to a) determine the effects of deflowering and defruiting on growth, chlorophyll content, photosynthesis and transpiration; b) to identify ... -
Stress related responses in soybean.
(2000)Environmental stresses such as drought, salinity and low temperature have been major selective forces throughout plant evolution and are important factors which limit crop plant distribution and agricultural productivity. ...