Department of Botany / MSc(Botany)

MSc (Botany) / Department of Botany / See the attached abstract below

MSc (Botany)

MSc (Botany) / Department of Botany / Understanding the uses of indigenous plants that are of economic importance to local communities is very much important in rural development strategies. The Marula (Sclerocarya birrea) Anacardiaceae family is widely used. More information on this tree species would enhance its value in agricultural landscapes, by helping farmers improve their livelihoods and ensuring environmental sustainability. Understanding how a community uses a resource and what influences the level of its use is crucial for developing a framework for its sustainable use based on local demands. Sclerocarya birrea is a species with multiple uses, which is recognized as commercially, medicinally and culturally important in Africa. Almost all parts of this species are useful. The study presented the findings of a survey of the indigenous knowledge, uses and management of S. birrea in Matshena village, Limpopo Province, South Africa. Different people of various ages were interviewed using a semi-structured questionnaire. Thirty percent of respondents indicated that they utilize the marula for beer and juice-making, the highest use category. In the sampled area the population of S. birrea is dominated by larger trees with no seedlings and juveniles. This is a sign of a population that will not be viable, since there are no younger individuals to replace the older trees when they die.

MSCAGR ( Plant Production) / Many high valued tree species of medicinal significance in the Limpopo Province, South Africa exhibit seed dormancy, and also contain aromatic oils which inhibit rooting of their stem cuttings. These plant species are under pressure due to human over-exploitation. The main objective of this study was to investigate effects of rooting hormones on the rooting ability that will help in domesticating some of the selected high valued medicinal plants, Elaeodendron transvaalense (bushveld saffron), Brackenridgea zanguebarica (yellow peeling plane), and Warburgia salutaris (pepper-bark tree). Stem cuttings of these plant species were prepared and treated with various concentrations (500, 1000 and 2000 ppm) of IBA, IAA and NAA in different growth media (Natural soil, farm soil and hygromix) at a nursery house. 180 experimental units were sown and arranged in Randomized Complete Block Design (RCBD), each treatment replicated five times and then monitored for a period of three months. Data were only obtained from Brackenridgea zanguebarica as other species dried up two weeks after sprouting. The two variables measured from the experiments were sprouted stems and number of leaves. The data obtained were subjected to analysis of variance and least significant difference (LSD) at 5% probability level was used to compare treatment using STATISTICA software analysis package. The hormone, hormone concentration, growth media and their interactions had effect on sprouted stems and number of leaves produced on Brackenridgea zanguebarica cuttings, with no record of rooting ability. IBA (500 ppm and 1000 ppm) and control (without rooting hormone) showed high significant results with natural soil and farm soil in terms of leaf production compared to the hygromix, which is significantly lower from others. IBA at the various concentrations (500, 1000 and 2000 ppm) and the control gave the highest percentage sprouted stem on both natural soil and farm soil as compared with other hormones at the same / NRF

MSc (Botany) / Department of Botany / Since time immemorial plants have traditionally been used for various purposes in many parts of the world including Vhembe district, Limpopo province of South Africa. The use of C. abbreviata plants at Matsa village of Vhembe district also contributes significantly to the livelihood of the community. However, little work has been made in the past to properly document and promote the knowledge. The purpose of the present study was to record and analyse the ethnobotanical knowledge of C. abbreviata within the people of Matsa village around Nzhelele in Vhembe district. Semi-structured questionnaires were administered on 50 informants from different households selected randomly to gather data regarding the local name of C. abbreviata, the uses and its availability. Significantly higher number of medicinal use was reported by elderly people including both men and women as compared to middle-aged, younger people. Other use categories included firewood, furniture and joinery production and shade for people in the area. Awareness on the importance of the species should therefore be created amongst the people, especially the young ones. Understanding the ethnobotanical knowledge of indigenous species within an area is crucial towards development of its management plan. / NRF