Now showing items 1-10 of 15
In vitro propagation of Scilla natalensis planch.
In South Africa, large quantities of Scilla natalensis are harvested from wild populations and sold as traditional medicine, which is reducing the density, distribution and genetic diversity of wild populations. The ...
An investigation into the biology and medicinal properties of Eucomis species.
Eucomis (Family Hyacinthaceae) are deciduous geophytes with long, narrow leaves and erect, densely packed flower spikes. The bulbs are greatly valued in traditional medicine for the treatment a variety of ailments, and ...
A taxonomic reassessment of the subtribe Asciepiadinae (Asclepiadaceae) in Southern Africa : Vol. 2.
This study extends an earlier M.Sc. research project on the narrow-leaved species of the genus Asclepias L. (30 species) to cover the entire subtribe Asclepiadinae sensu K. Schum. in southern Africa- (182 species in 23 ...
Population genetics of the striped-mouse, Rhabdomys Pumilio (Sparrman, 1784)
The striped-mouse, Rhabdomys pumilio, is widely distributed throughout southern Africa within a variety of habitats and rainfall regimes. It is found at sea level in the Eastern and Western Cape regions and at altitudes ...
Vitamin B-6 deficiency : biochemical and physiological changes with special emphasis on zinc status
Abstract available on PDF file.
Comparision of two promoters driving transgene expression in water-stressed sugarcane.
For the expression of transgenes in plant cells, appropriate promoter sequences have to be introduced upstream of the gene to ensure efficient transcription. Tissue- or signal-responsive promoters are in high demand in ...
Effect of perennial water on soil, vegetation and wild herbivore distribution in southeastern Zimbabwe.
The effects of artificially supplied perennial water on soil properties, vegetation dynamics and the distribution of large herbivores was investigated in southeastern Zimbabwe. Data collection took place between March ...
A system for supporting wetland management decisions.
In South Africa, the loss of wetlands and their associated benefits has been considerable. A need was identified for a system that, using available information, would assist in achieving a balance between local, mainly ...
Impact of stocking rate, livestock type and livestock movement on sustainable utilisation of sourveld.
Data collected between 1992/93 and 1996/97 from two long-term grazing trials were used to investigate the interaction between grazing animals and veld grass. In the first trial, the impacts of stocking rate and time of ...
Micropropagation of Acacia mearnsii (de willd)
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 ...