Browsing Botany by Title
Now showing items 1-20 of 261
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Above-ground allometry, biomass and nutrient content of acacia mearnsii across four ages and three sites in the Kwazulu-Natal Midlands.
(2005)Acacia mearnsii (black wattle) is one of the few tree crops of which both timber and bark are utilised, with branches sometimes being collected for fuel wood. There is a great potential for nutrient loss from plantations ... -
Abscisic acid and other hormonal effects on growth in Spirodela.
(1969)The effects of abscisic acid In particular, as well well as gibberellic acid and the cytoklnlns, 6-benzyladenine, kinetin, and 6-dlmethylal lalylamlnopurine, on the growth of Spirodela oligorrhiza were investigated. Abscisic ... -
Achene biology and the chemical control of Chromolaena odorata.
(1985)Abstract viewable in PDF document. -
The actions of, and interactions between, auxins and cytokinins and their effect on in vitro rooting of selected Eucalyptus clones.
(2011)Clonal propagation of Eucalyptus spp. and its hybrids allows for competitiveness in the commercial forestry industry through the propagation and preservation of superior/elite genotypes. Vegetative propagation through ... -
Adventitious rooting in stem cuttings of Eucalyptus grandis Hill ex Maid.
(1988)Adventitious rooting in stem cuttings of Eucalyptus grandis Hill ex Maid. was thought to be influenced by a putative inhibitor. In previous studies it has been usual to infer the presence of putative rooting inhibitors ... -
Alkaloids of Catha Spp.
(2001)The levels of the psychoactive alkaloids S-(-)-cathinone and its primary metabolite cathine, consisting of the diastereomers (+) -norpseudoephedrine and (-)- norephedrine were determined in Catha edulis (Vahl) Forssk. ex ... -
Aluminium-induced gene expression in sugarcane roots.
(2002)Due to the increasing prevalence and severity of Al phytoxicity in certain regions of the South African sugar industry, a research programme has been initiated at SASEX to elucidate the molecular mechanisms by which ... -
Analysis of historical flowering data, investigations into aspects of pollen biology and selected biotechniques to complement sugarcane breeding in South Africa.
(2016)Abstract available in PDF file. -
Another culture of Solanum genotypes.
(1995)Being the third most cultivated crop in South Africa, potatoes are of great economic importance. As potatoes originated from cooler areas in the world, they do not easily adapt to South African conditions. The main ... -
Anti-inflammatory and anti-bacterial activity of South African Erythrina species.
(2000)An investigation was undertaken to determine whether Erythrina species indigenous to South Africa contained the same type of compounds as Erythrina species not found in South Africa and to determine whether they displayed ... -
The application of microsatellites to sugarcane parentage determination and varietal identification.
(2002)The use of microsatellite markers has matured and become commonplace for plant genome analyses and is now poised for widespread practical application in sugarcane. Sequence Tagged Microsatellite Site (STMS) amplification ... -
The application of the heat pulse velocity technique to the study of transpiration from Eucalyptus grandis.
(1994)This thesis examines the application of the heat pulse velocity technique (HPV) to plantation-grown Eucalyptus grandis in the Eastern Transvaal, South Africa. The work addresses the application of the technique per se and ... -
Aspects of avian thermal physiology and frugivory of indigenous and invasive fruits in South Africa.
(2014)Indigenous and invasive plants have long been recognised as an important food source for avian frugivores worldwide. It has been suggested that seed germination success can vary amongst avian and plant species and that ... -
Aspects of seed propagation of commonly utilised medicinal trees of KwaZulu-Natal.
(1996)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. ... -
Aspects of structure, growth and morphogenesis in a new filamentous red alga (Ceramiaceae, Rhodophyta)
(1993)Pteroceramium, a descriptive name given to an undescribed winged species closely related to Ceramium, has uniaxial filamentous thallus construction with pseudodichotomous branching. Alternate branches become dominant. ... -
Aspects of the influence of temperature on the desiccation responses of seeds of Zizania palustris (Wild rice)
(1996)Seeds of wild rice (Zizania palustris var. interior) have been reported to show highest survival when dehydrated at 25 QC. It has also been reported that axis cells sustained least damage at this drying temperature. In ... -
Aspects of the invasion of southern tall grassveld by Aristida junciformis subsp. junciformis Trin. et Rupr.
(1998)Aristida junciformis subsp. junciformis Trin. et Rupr. is an indigenous, densely tufted, evergreen perennial grass associated with the degeneration of grasslands over large areas of South Africa. More than two hundred ... -
Aspects of the role of cytokinins in adventitious root formation.
(1996)The initiation and development of adventitious roots in cuttings are highly complex processes, influenced by both endogenous and exogenous factors. These vary from the environmental factors prior to the striking of the ... -
Aspects of the structure and functioning of the vegetation of the Hlatikulu Vlei.
(1996)Hlatikulu Vlei, situated in the foothills of the Natal Drakensberg, is one of the priority wetlands in KwaZulu-Natal, occupying an area of 733 Hectares. The importance of Hlatikulu Vlei lies in its functions to store ... -
Aspects related to the germination of Themeda triandra seed.
(1996)Themeda triandra is a grass species of economic importance in Southern and Eastern Africa, and Australia. The species is being lost from grasslands and savannas in these areas due to poor agricultural practice, rangeland ...