Browsing Masters Degrees (Botany) by Title
Now showing items 33-52 of 130
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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 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 ... -
The effect of sun and shade on the leaves of four coastal tree species.
(1992)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 ... -
The effect of vesicular-arbuscular mycorrhiza on the growth of two indigenous grass species Themeda triandra and Trachypogon spicatus grown on coalmine spoil topsoil.
(1997)The main project was an assessment of the effect that colonization by five different Vesicular-arbuscular mycorrhiza (VAM) cultures have on the growth of the indigenous-grasses Themeda triandra and Trachypogon spicatus, ... -
Effects of nitrogen nutrition on salt stressed Nicotiana tabacum var. Samsum in vitro.
(1992)The responses of Nicotiana tabacum L. var. Samsun to alterations in the nitrogen (N) supply under saline conditions in vitro were monitored. The aim was to test the hypothesis that nitrate-nitrogen supplementation to ... -
Effects of pruning and fertilizer on growth, phytochemistry and biological activity of Sutherlandia frutescens (L.) R.Br.
(2017)Sutherlandia frutescens (L.) R.Br. (Fabaceae), commonly known as cancer bush, is a herb with a long history of traditional use by a variety of cultures. The plant mainly grows in the dry parts of southern Africa, mostly ... -
The effects of sheep grazing on the recovery of succulent Karoo vegetation.
(1995)Vegetation monitoring, recording the recovery or change in plant cover over time, for several Karoo shrubs was undertaken to evaluate the Savory Grazing System on a farm in the Succulent Karoo. This evaluation was ... -
Effects of some of the procedural steps of cyropreservation on cryo-recalcitrant zygotic embryos of three amaryllid species producing desiccation-sensitive seeds.
(2013)Cryopreservation is the most promising method for the long-term conservation of germplasm of plants producing desiccation-sensitive seeds. While such seeds are generally termed recalcitrant in the context of conventional ... -
Establishment of an indirect organogenesis protocol for Eucalyptus grandis species and hybrids.
(2004)The prospect of integrating transgenic eucalypts with conventional breeding programmes is of value to the Plantation Forestry and Forest Products Industries. However, significant progress in this regard has still to be ... -
The establishment of in vitro screening methods for evaluating the susceptibility of sugarcane (Saccharum spp. hybrids) to the fungal disease, smut (causal agent : Ustilago scitaminea H. and P. Sydow) and the stalk borer, Eldana saccharina Walker (Lepidoptera : Pyralidae).
(2010)The fungal disease smut (causal agent: Ustilago scitaminea H. & P. Sydow) and stalk borer Eldana saccharina Walker place major constraints on sugarcane agriculture in South Africa. The best approach for management is the ... -
Ethnobotanical study of plants from Pondoland used against diarrhoea.
(2012)Diarrhoea and related diseases are the most common causes of death in children, especially from developing countries, killing about 1.5 million children under the age of five yearly. In South Africa, diarrhoea is the third ... -
Ethnopharmacology and phytochemistry of some selected medicinal plants in KwaZulu Natal.
(2006)In this ethnopharmacological study to isolate, purify, identify and test crude and isolated compounds from organic and aqueous extracts from stem and leaves of Protorhus longifolia and Sclerocarya birrea, stem bark of ... -
Evaluation of recirculating hydroponic systems for eucalyptus cutting production.
(2002)In South Africa, Eucalyptus grandis and hybrids of this genus are planted over 196000 ha of Mondi Forests land. The temperate and cold tolerant species (E. grandis, and E. grandis X E. nitens) occupy 142000 ha and the ... -
Genetic analysis of Chaerephon pumilus (Chiroptera: Molossidae) from southern Africa.
(2008)Chaerephon pumilus, the little free-tailed bat, (family: Molossidae) has a distribution throughout most of sub-Saharan Africa and the eastern region of Madagascar. The vast geographical distribution of this species is ... -
Host specificity of the hemiparasitic mistletoe, Agelanthus natalitius.
(2009)Mistletoes are a group of hemiparasitic plants that grow on a wide variety of host trees and differ in their degree of host specificity, ranging from specialists to generalists. Mistletoes can also be locally host specific ... -
How do alien plants invade : an analysis of the historical spread and potential distribution of the invasive alien plant Chromolaena odorata in and around Hluhluwe Game Reserve.
(2009)Alien plant invasions and human-induced land transformations are the two most important factors contributing to loss of biodiversity, and Chromolaena odorata (C. odorata) is one of the world’s worst invader plants. It ... -
In vitro bulb induction in Eucomis zambesiaca Baker.
(2009)Eucomis L’ Hér. is a genus of 10 species that fall within the Hyacinthaceae family. Eucomis zambesiaca Baker is a summer-blooming bulbous geophyte occurring from northern South Africa to Malawi. Eucomis species are used ...