Browsing Botany by Title
Now showing items 116-135 of 261
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Mating systems, insect pollination and chemical ecology of grassland Protea species (Proteaceae)
(2012)Major transitions between vertebrate and insect pollination systems have occurred many times during the angiosperm radiation and are associated with evolutionary modifications in floral traits. In the large ancestrally ... -
Mechanisms of desiccation tolerance in cryptogams.
(2002)In this study adaptations of bryophytes and lichens to desiccation stress were examined. The aim was to test whether desiccation tolerance in the selected species is constitutive or if desiccation tolerance could be ... -
Medicinal properties and growth of Merwilla natalensis.
(2003)Merwilla natalensis (Planchon) Speta is ranked as one of the most commonly sold medicinal plants at most of the informal medicinal plant markets found throughout South Africa. The increasing demand for medicinal plants ... -
Medicinal properties and micropropagation of Cussonia species.
(2000)Cussonia species (commonly known as Cabbage trees) are indigenous to South Africa and are used in traditional medicine to treat an assortment of diseases. Due to their attractive growth form, they are assets in ... -
The micromorphological and essential oil status of the foliar secretory structures of Ocimum obovatum E. Mey. ex Benth. subsp. obovatum (Lamiaceae)
(2011)Ocimum obovatum E. Mey ex Benth. var. obovatum is a traditionally used medicinal plant that grows along the KwaZulu-Natal coast and the western Cape of South Africa. The plant is noted for its hair restoration properties, ... -
Micromorphology and phytochemistry of the foliar secretory structures of Stachys natalensis Hochst. and development of an in vitro propagation protocol.
(2014)Many members of the genus Stachys have been used as ornamental plants, or as edible foods and, in a number of cultures, as traditional medicine. One such species, Stachys natalensis Hochst., is a perennial, straggling shrub ... -
Micropropagation and medicinal properties of Barleria greenii and Huernia hystrix.
(2009)The crisis of newly emerging diseases and the resistance of many pathogens to currently used drugs, coupled with the adverse side-effects of many of these drugs have necessitated the continuous search for new drugs that ... -
Micropropagation and secondary metabolites of Sclerocarya birrea.
(2009)Sclerocarya birrea (marula, Anacardiaceae) is a highly-valued indigenous tree in most parts of sub-Saharan Africa because of its medicinal and nutritional properties. The marula tree is adapted to the semi-arid conditions ... -
Micropropagation of Acacia mearnsii (de willd)
(1999)Multiple shoots were produced from nodal explants of thirty-day-old in vitro grown seedlings and from pretreated three, five- and nine-month-old greenhouse grown Acacia mearnsii plants, respectively. Explants were ... -
Micropropagation of date palm (Phoenix dactylifera L.) and papaya (Carica papaya L.)
(2000)Date palms (Phoenix dactylifera L.) and papayas (carica papaya L.) are two commercially important plantation crops. Their economic potential in South Africa and worldwide is increasing. However, due to disease, pests and ... -
Micropropagation of tulbaghia species.
(2011)Tulbaghia (Alliaceae) is a genus of plants with medicinal, ornamental and nutritive value. Different plant parts such as roots, bulbs, leaves and flowers are used in the treatment of a variety of conditions. The bulbs of ... -
Molecular basis of anthocyanin production in callus and cell cultures of Oxalis reclinata.
(1996)Oxalis reclinata Jacq., is a dicotyledonous plant. O. reclinata belongs to the family Oxalidaceae. This plant produced callus which accumulated red coloured anthocyanin pigments when cultured in vitro. The levels of ... -
Molecular characterisation of the gene encoding [Delta 1]-Pyrroline-5- Carboxylate Reductase isolated from Arabidopsis thaliana (L.) Heynh.
(1995)In Arabidopsis thaliana (L.) Heyhn, the size of the pool of free proline increases up to 27-fold in response to osmotic stress. The magnitude of this accumulation is dependent upon the rate of imposition of the stress. ... -
Molecular characterization of acid phosphatase in the lichen Cladonia portentosa.
(2011)Acid phosphatases (apase) are important hydrolytic enzymes that function in the acquisition, production; transport and recycling of inorganic phosphate (Pi), thus making a significant contribution towards nutrients dynamic ... -
A molecular study of y-Aminobutyric acid synthesis in Arabidopsis thaliana under abiotic stress.
(1997)y-Aminonbutyric acid (GABA) is a ubiquitous non-protein amino acid found ill many plants and organisms. GABA accumulation in plants has previously been reported as result of stresses such as water deprivation, high ... -
The morphology and chemical composition of the trichomes of Withania somnifera (Solanaceae)
(2014)For centuries, plants have been used in the cosmetic, culinary and medicinal industries. Recently however, the use of plants in the medicinal industry has increased due to the widespread awareness of the harmful effects ... -
Mosquitocidal activity against Anopheles arabiensis of plants used as mosquito repellents in South Africa.
(2014)Ten plant species that are used as mosquito repellent in South Africa, Aloe ferox (leaves), Atalaya alata (leaves), Balanites maughamii (bark), Clausena anisata (leaves), Croton menyaarthii (leaves), Lippia javanica (leaves), ... -
'n Plantekologiese opname van Boschberg en sy omringende gebiede met spesiale verwysing na die weidingsfaktor.
(1972)No abstract available. -
Niche modelling the distributions of large Acacia nigrescens and Sclerocarya birrea trees.
(2011)MaxEnt modelling uses only the known locations of a species to predict the overall distribution of a species. Large trees are important for the functioning of savanna ecosystems, bringing nutrients to the surface, providing ... -
Nitrogen fixation and cycling in Natal valley bushveld Acacia species.
(1995)Five species, Acacia karroo, A. robusta, A. nilotica, A. sieberana and A. tortilis, were inoculated with Rhizobium and grown in potted sand in a temperature controlled greenhouse. After six months, results showed a ...