Browsing Botany by Title
Now showing items 48-67 of 261
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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 ... -
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 ... -
Development of strategies towards the cryopreservation of germplasm of Ekebergia capensis Sparrm. : an indigenous species that produces recalcitrant seeds.
(2011)The conservation of germplasm of indigenous plant species is vital not only to preserve valuable genotypes, but also the diversity represented by the gene pool. A complicating factor, however, is that a considerable ... -
Differing responses of embryonic axes of four recalcitrant-seeded species from temperate and tropical provenances to the procedures involved in cryopreservation.
(2016)Abstract available in PDF file. -
Do herbivores facilitate seed germination and seedling recruitment of woody plants?.
(2014)Woody plant encroachment is a phenomenon whereby trees and shrubs invade grasslands or increase in an already wooded area, resulting in lower yields of herbaceous plants and a reduction in the carrying capacity of rangelands. ... -
Dormancy and germination of the Manketti nut, Ricinodendron rautanenii.
(1982)The distribution of Ricinodendron rautanenii trees is confined to a fairly distinct band across southern Africa. This stretches from South West Africa in the west, through Botswana and Zimbabwe, to Mozambique in the ... -
Ecophysiology of encroaching Acacia mellifera in intra- and inter-specific interactions.
(2010)The long-term economic viability and ecological integrity of savanna rangelands is being undermined by increasingly dense woody thickets at the expense of palatable herbaceous cover. This process is known as shrub- or ... -
The effect of 6-Benzyladenine on adventitious shoot formation by Lycopersicon. species in vitro.
(1993)Lycopersicon esculentum Mill. cv. Rodade was developed in South Africa for the fresh produce market. This cultivar is also of major importance for South African tomato breeding programmes because of its resistance to ... -
Effect of auxin on 6-(benzylamino)purine metabolism in suspension cultures.
(1993)A review of the literature indicated that the purine cytokinin 6-(benzylamino)purine (SA) may be converted to a wide range of metabolites. Although the functional significance of these metabolites remains obscure, cytokinin ... -
The effect of elevated atmospheric CO2 on the growth and physiology of Chromolaena odorata.
(2008)Rising atmospheric CO2 (Ca) concentrations have generated concern among scientists, mainly because of CO2’s role as a greenhouse gas and its influence on plant growth and development. Previous research has suggested that ... -
The effect of elevated CO2 levels on the growth of two Acacia species.
(2001)Climate change, induced by increases in the concentration of greenhouse gases in the atmosphere, can affect the growth and community structure of ecosystems in two ways. Firstly directly through changes in atmospheric ... -
The effect of elevated glutathione reductase and superoxide dismutase activities in stressed transgenic tobacco.
(1996)Life as we know it would be impossible in the absence of oxygen. However, too much oxygen can be toxic to the aerobic organisms which depend on it for their very existence. This apparent paradox arises as a result of ... -
The effect of Gamma radiation (60Co) on the postharvest physiology of Musa acuminata collar cv. Dwarf Cavendish.
(1991)Bananas are climacteric fruits and show climacteric patterns with respect to both their ethylene production and respiration rates during the ripening process. Treatment with ethylene accelerated the ripening process, ... -
The effect of H2O2 on the photosynthetic biochemistry of Pisum sativum.
(1990)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 provenance on the response of the recalcitrant seeds of Trichilia dregeana to drying and chilling.
(2011)One of the factors that affect the post-harvest behavior of seeds is provenance. Different geographical locations are characterised by different environmental conditions, hence, plant materials harvested from different ...