Now showing items 31-40 of 239
Aspects of seed propagation of commonly utilised medicinal trees of KwaZulu-Natal.
Due to over-exploitation of commonly-used medicinal plants, mainly from KwaZuluNatal, because of ever-increasing human population growth, many of the useful medicinal plants are becoming depleted in their natural habitats. ...
Phytosociology of the Namib Desert Park, South West Africa.
The geology, topography, soils and climate of the Namib Desert Park south of 23 S. Lat. are described briefly. The vegetation was investigated using the techniques of the Zurich - Montpellier school of phytosociology. ...
The effect of H2O2 on the photosynthetic biochemistry of Pisum sativum.
To study the short-term effect of hydrogen peroxide on plant metabolism aminotriazole (2 mM), a catalase inhibitor was applied through the transpiration stream of pea seedlings and the gas exchange characteristics, ...
The effect of sun and shade on the leaves of four coastal tree species.
Mimusops caffra, Euclea netetensis, Olea woodiana and Peddiea africana are tree species associated with different successional stages in a coastal dune forest. Saplings of these tree species were established in four different ...
Towards improved livestock production off sweet grassveld.
No abstract available.
Transformation of potatoes with the potato leafroll virus coat protein gene.
Potato leafroll virus (PLRV) is one of the most destructive potato viruses in South Africa. In order to establish resistance against PLRV in commercial potato cultivars, the coat protein (CP) gene of the virus was ...
Nitrogen fixation and cycling in Natal valley bushveld Acacia species.
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 ...
A regulatory role for proline metabolism in Arabidopsis thaliana (L.) Heynh.
Many plants accumulate organic osmolytes in response to the imposition of environmental stresses that cause cellular dehydration. Of these, proline is the most extensively studied. Conclusive demonstration that this imino ...
Molecular characterisation of the gene encoding [Delta 1]-Pyrroline-5- Carboxylate Reductase isolated from Arabidopsis thaliana (L.) Heynh.
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. ...
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 ...