Masters Degrees (Plant Pathology)
Recent Submissions
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Singular and combined effect of postharvest treatments on viability and reproductive ability of phyllosticta citricarpa infections.
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Citrus is one of the most important fruit crops globally and is currently being produced in over 100 countries. South Africa is one of the biggest shipping exporters of fresh citrus, with approximately ...
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Further optimisation of in-line aqueous application of imazalil to control citrus green mould caused by Penicillium digitatum
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: South Africa has a successful citrus export industry. A threat to fresh citrus fruit is the fungal pathogen Penicillium digitatum causing green mould. Imazalil (IMZ) is the most important fungicide to ...
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Optimisation of postharvest drench application of fungicides on citrus fruit
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: South Africa is the 2nd largest exporter of fresh citrus, after Spain, worldwide. Delays to the packline, i.e. degreening, can result in substantial postharvest decay such as green mould caused by Penicillium ...
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A host-pathogen study of Fusarium Verticillioides in resistant and susceptible maize inbred lines
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT: Maize (Zea mays L.) is an important crop worldwide and forms the staple diet of many African countries including South Africa. Fusarium ear rot (FER) of maize is caused by a fungus, Fusarium verticillioides, ...
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Fungicide resistance and control of citrus green mould
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Please refer to full text for abstract
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The role of sucker wounds as portals for grapevine trunk pathogen infections
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Grapevine trunk diseases are responsible for reduced wine and table grape production world-wide. Trunk disease infections are caused by xylem-inhabiting pathogens which include species of Botryosphaeriaceae, ...
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Risk assessment of the Acacia cyclops dieback pathogen, Pseudolagarobasidium acaciicola, as a mycoherbicide in the South African strandveld and limestone fynbos
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Acacia cyclops, an invasive weed in South Africa, was initially imported to stabilize the sand dunes in the southern Cape. The spread of A. cyclops is a major threat to the fragile biodiversity of the ...
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The effect of garlic extracts on the control of postharvest pathogens and postharvest decay of apples
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Apples are an important export commodity for the South African market, and postharvest losses that occur as a result of decay due to infection with pathogenic fungi such as Botrytis cinerea Pers., ...
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The role of arthropods in the dispersal of trunk disease pathogens associated with Petri disease and Esca
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: Petri disease and esca are devastating grapevine trunk diseases and compromise the sustainability of viticulture world-wide. Despite being extensively studied, knowledge of inoculum sources and mechanisms ...
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Simptomatologie en anatomie van gleufstam ('legno riccio') by die wingerdstok (Vitis)
(Stellenbosch : Stellenbosch University, 1973-12)ENGLISH ABSTRACT: no abstract available
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Biochemiese veranderinge in druiwemos veroorsaak deur Botrytis cinerea en Rhizopus nigricans
(Stellenbosch : Stellenbosch University, 1964-12)ENGLISH ABSTRACT: no abstract available
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Bars van tafeldruiwe met spesiale verwysing na Queen of the Vineyard
(Stellenbosch : Stellenbosch University, 1956-12)ENGLISH ABSTRACT: no abstract available
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n Studie van Botrytis cinerea met verwysing na die effek van swaeldioksiedtoedienings, verskillende tye na bespuiting van druiwekorrels met konidia, op die intensiteit van vaalvrot
(Stellenbosch : Stellenbosch University, 1972-12)ENGLISH ABSTRACT: no abstract available
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Comparative studies on genetic variability and fungicide resistance in Tapesia yallundae
(Stellenbosch : Stellenbosch University, 1998-12)ENGLISH ABSTRACT: Eyespot is an important disease of spring wheat (Triticum aestivum L.). Four species of Ramulispora are associated with this disease, of which Tapesia yallundae and T. acuformis. are common. This thesis ...
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Colletotrichum diseases of Proteaceae
(Stellenbosch : Stellenbosch University, 2004-03)ENGLISH ABSTRACT: This thesis consists of four chapters that present research findings on Colletotrichum diseases associated with Proteaceae worldwide. The first chapter is a review of literature regarding the taxonomy ...
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The expression of yeast antifungal genes in tobacco as possible pathogenesis-related proteins
(Stellenbosch : Stellenbosch University, 2003-12)ENGLISH ABSTRACT: The resistance of plants to infection by phytopathogenic microorganisms is the result of multiple defence reactions comprising both constitutive and inducible barriers. While disease is the exception, ...
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The detection of cherry leaf-roll nepovirus and the use of molecular markers for germplasm identification in walnuts (Juglans regia L.)
(Stellenbosch : Stellenbosch University, 2003-12)ENGLISH ABSTRACT: The aim of this study was to combine two common diagnostic tools: serological kits and genetic fingerprinting to identify cherry leaf-roll nepovirus (CLRV), and to establish a marker system to characterize ...
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The role of the mediterranean fruit fly, Ceratitis capitata, in Botrytis bunch rot of grape
(Stellenbosch : Stellenbosch University, 2002-03)ENGLISH ABSTRACT: Botrytis bunch rot of grape is caused by Botrytis cinerea Pers. :Fr. Conidia of the pathogen, which is dispersed by wind, water droplets and by insects, can penetrate the intact grape berry cuticle, ...
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Infection pathways of Botrytis cinerea on selected wine grape cultivars
(Stellenbosch : Stellenbosch University, 2002-12)ENGLISH ABSTRACT: An understanding of the infection pathways of Botrytis cinerea in grape bunches will help to combat this devastating pathogen of grape. Many studies have been done to determine the possible infection ...
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Infection by dry, airborne Botrytis cinerea conidia and fungicide efficacy on different parts of grape bunches and vinelets
(Stellenbosch : Stellenbosch University, 2002-03)ENGLISH ABSTRACT: The evaluation of fungicide efficacy in commercial vineyards can be influenced by the sporadic occurrence of Botrytis cinerea at various positions on vines, differences in bunch structure during bunch ...
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A study on the etiology and epidemiology of black root rot of strawberries in the Western Cape
(Stellenbosch : Stellenbosch University, 2002-12)ENGLISH ABSTRACT: Historically root diseases have been a production-limiting problem for the strawberry industry worldwide. In the Western Cape Province of South Africa the most serious root disease is black root rot, ...
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The effect of haloxyfop-R-methyl ester and imazamox herbicides, tine or no tillage and nine different medic cultivars on the seed and dry matter production as well as the quality of medic pastures
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: The aim of this study was to determine the effect of a grass herbicide, a broadleaf herbicide with some grass control capabilities, method of tillage (tine and no-tillage) at planting of wheat as well ...
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Suppression of Botrytis cinerea by antagonists in living, moribund and dead grapevine tissue
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: Several attempts have been made to reduce Botrytis cinerea grey mould in vineyards and in storage by means of biological control. However, the so called "silver bullet" approach in utilising a single ...
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Resistance to Botrytis cinerea in parts of leaves and bunches of grapevine
(Stellenbosch : Stellenbosch University, 2001-03)ENGLISH ABSTRACT: Knowledge of the presence of Botrytis cinerea in morphological parts of bunches and leaves of grapevine would help to find a reliable, sensitive, and specific assay to verify the actual occurrence of ...
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Assessment of inoculation techniques to evalute apple resistance to Phytophthora cactorum
(Stellenbosch : Stellenbosch University, 2001-03)ENGLISH ABSTRACT: Phytophthora cactorum (Lebert & Cohn) Schrot. is the primary cause of crown, collar and root rot diseases of apple (Malus domestica Borkh.) trees worldwide. This pathogen is most destructive in commercial ...
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The characterization and control of Phomopsis cane and leaf spot on vine
(Stellenbosch : Stellenbosch University, 2000-12)ENGLISH ABSTRACT: Phomopsis cane and leaf spot disease of grapevine is an economically important disease in many of the vine-growing areas of the world. Four different Phomopsis spp. have previously been associated with ...
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Characterization and control of Phaeomoniella chlamydospora in grapevines
(Stellenbosch : Stellenbosch University, 2000-12)ENGLISH ABSTRACT: Petri grapevme decline, also known as black goo, slow die-back and Phaeoacremonium grapevine decline, causes significant losses of young vines worldwide. Species of Phaeoacremonium, Phaeomoniella ...
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Genetic diversity in Plasmopara viticola in South Africa
(Stellenbosch : Stellenbosch University, 2007-03)ENGLISH ABSTRACT: Downy mildew, caused by the obligate pathogen Plasmopara viticola, is a very destructive grapevine disease. The asexual phase (sporangia) of the pathogen has long been viewed as the life cycle stage ...
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Quarantine status of selected fungal pathogens on Malus, Prunus and Vitis species
(Stellenbosch : Stellenbosch University, 2006-04)ENGLISH ABSTRACT: Invasions of alien species into non-native environments pose one of the largest, but least addressed international threats to biodiversity, both within natural ecosystems and agricultural settings. It ...
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The ecology of Botrytis cinerea on grape in the Western Cape Province
(Stellenbosch : Stellenbosch University, 2004-03)ENGLISH ABSTRACT: Botrytis cinerea Pers.: Fr., a pathogen of grapevine (Vitis vinifera L.), moves mainly through conidia by air currents in vineyards which are deposited intermittently on the surfaces of leaves, ...
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