Browsing Botany by Title
Now showing items 59-78 of 261
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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 ... -
The effect of seaweed concentrate on plant growth.
(1990)The application of seaweed concentrates to plants has been shown to enhance growth and improve yield parameters. How these natural products elicit their beneficial responses is still unclear. While many of the growth ... -
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 antifungal treatments on some recalcitrant seeds.
(2017)Abstract available in PDF file. -
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 ... -
Endogenous and exogenous factors involved in sorghum germination with reference to malting.
(1997)In Africa, the grain sorghum (Sorghum bicolor (L.) Moench), is malted to provide the most important ingredient in brewing, malt, which is used primarily for the production of traditional (opaque) sorghum beer. Malting ... -
Establishing genetic diversity of Rwanda highland banana using random amplified polymorphic DNA markers.
(2006)The characterization of the banana germplasm collection from Rubona - Rwanda was investigated using morphological and cytological characteristics of the genomic groups. Genetic diversity was assessed using Random Amplified ... -
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 ...