Browsing Biological Sciences by Title
Now showing items 145-164 of 733
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Desiccation tolerance and sensitivity of vegetative plant tissue.
(1995)There is a great deal of work currently being done in the field of desiccation tolerance. Generally workers studying desiccation-tolerant plant tissues have concentrated on the mechanisms of desiccation tolerance without ... -
Designing a dragonfly trail in the National Botanical Gardens, Pietermaritzburg.
(1999)Dragonfly assemblages and their biotope preferences in the National Botanical Gardens, Pietermaritzburg, South Africa were investigated. The information served as background for increasing public awareness and education ... -
Detecting parasites loads in urine diversion toilets.
(2009)In an attempt to supply sanitation to the growing communities in rural and peri-urban areas around Durban, the eThekweni Municipality has installed urine diversion (UD) toilets which have been modified to suit local ... -
Determinants of community composition and diversity in KwaZulu-Natal mesic grasslands : evidence from long-term field experiments and pot and plot competition experiments.
(2003)A predictive understanding of plant community response to various environmental influences (e.g. type, timing and frequency of disturbance, site productivity, fertilization, etc.) is a general goal of plant ecology. This ... -
Determinants of elephant spatial use, habitat selection and daily movement patterns in Hluhluwe-iMfolozi Park.
(2011)The ecological role of large herbivores is increasingly recognized due to their ability to influence ecosystem functioning and their impacts on faunal and floral assemblages. Knowledge on the determinants of spatial ... -
Determinants of grass production and composition in the Kruger National Park.
(2003)The dynamics and complexities of climate-soil-vegetation relations in the Kruger National Park are poorly known. Although primary production and composition of the grass layer are very important components of the Park's ... -
Development and testing of a remote controlled oesophageal fistula valve for goats.
(1993)A remote control sampling technique was developed for the collection of oesophageal fistula samples from goats. Number and size of samples can be varied and collected throughout the day without disturbing the animal's ... -
Development and utilization of a river system model to integrate human and ecological water requirements in a southeastern United States river basin.
(2016)Abstract available in PDF file. -
The development of an open space system for the Queensburgh municipal area.
(1994)This project was conducted with the view of extending the Durban Municipal Open Space System into surrounding municipalities. It was aimed at adopting a holistic approach to nature conservation by providing for the needs ... -
Development of beauveria brongniartii as a bio-Insecticide to control white grub (coleoptera: scarabaeidae) species attacking sugarcane in South Africa.
(2016)Abstract available in PDF file. -
The development of clone-unspecific micropropagation protocols for three commercially important Eucalyptus hybrids.
(2001)Micropropagation methods are often used to supplement existing clonal programmes for Eucalyptus species. However, genotypic differences among clones require the implementation of clone-specific protocols, an expensive and ... -
The development of cultivated dryland grass pastures for livestock production in the high rainfall areas of Rhodesia.
(1974)No abstract available. -
Development of in vitro culture and gene transfer techniques in sugarcane (Saccharum species hybrids).
(1992)In vitro cell and tissue culture systems were developed for sugarcane in order to utilise current transformation techniques to introduce genes to South African sugarcane varieties, which would be difficult, if not ... -
The development of in vitro rooting systems for cold-tolerant Eucalyptus grandis x nitens clones and the assessment of the hydraulic efficiency of roots produced by in vitro vs. cutting propagation.
(1999)Hybrid clones of the fast-growing Eucalyptus grandis and cold-tolerant E. nitens (GN clones) have been identified by the South African Forestry Industry as being highly suitable for plantations in cold-dry marginal areas. ... -
Development of micropropagation protocols for selected indigenous plant species..
(1995)The herbal medicine trade is thriving in KwaZulu Natal with an ever-increasing number of people harvesting and trading in indigenous plants, especially those species with medicinal and/or magical properties. The number of ... -
Development of novel antibacterial and antiviral transgene vectors and techniques for their application and analysis in sugarcane.
(2002)Sugarcane is challenged by a number of phytopathogenic bacteria and viruses that are best managed by the development of resistant varieties. Genetic engineering is a promising strategy in such breeding efforts, as it ... -
The development of protocols for the diagnosis and micropropagation of cold-tolerant Eucalyptus cultivars.
(1996)In South Africa, Eucalyptus trees are used for many processed wood products (e.g. paper) and in the mining industry. Priorities in Eucalyptus breeding programmes include selection of varieties that are fast growers, insect ... -
The development of regeneration and transformation systems for Eucalyptus spp.
(1994)In South Africa, Eucalyptus breeding programmes are aimed at the selection of fastgrowing varieties, with appropriate wood characteristics and/or resistance to pests and diseases. However, the slow growth rate, long ... -
The development of short-to-medium and long-term germplasm storage protocols for Eucalyptus spp.
(1998)Eucalyptus trees are a significant source of fuelwood, timber and raw material for the paper and pulp industry. In South Africa, Eucalyptus grandis and its hybrids are in high demand due to their fast growth and suitability ... -
The development of stocking rate models for three veld types in Natal.
(1990)The overall objective was to develop stocking rate models for three veld types. namely the Lowveld. the Southern Tall Grassveld and the Natal Sour Sandveld. in Natal. Sub-objectives were to determine ...