Browsing Masters Degrees (Plant Pathology) by Title
Now showing items 12-31 of 71
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The characterization of the basidiomycetes and other fungi associated with esca of grapevines in South Africa
(Stellenbosch : University of Stellenbosch, 2010-12)ENGLISH ABSTRACT: Esca is a disease affecting grapevines and is potentially devastating as there are economic losses due to a decrease in yield, wine quality and berry quality. Vineyards also need to be replaced earlier ... -
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 ... -
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 ... -
Dectection and quantification of soilborne pathogens in grapevine nurseries
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Black-foot disease (BFD) and crown and root rot (CRR) are important decline diseases of grapevines, worldwide. These diseases occur in both nurseries and vineyards. Black-foot disease is caused by species ... -
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 ... -
Determining the resistance or susceptibility of grapevine rootstocks used in South Africa towards fungal trunk disease pathogens
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Grapevine fungal trunk diseases are responsible for reduced grapevine production world-wide. Trunk diseases are caused by endophytic, xylem-inhabiting pathogens associated with a wide range of symptoms. ... -
Diversity and detection of Kenyan and Nigerian populations of Fusarium oxysporum f. sp. strigae
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: The Genus Striga contains some of the most destructive plant-parasitic weed species in the world. These include S. hermonthica and S. asiatica, which attack important staple food crops in sub-Saharan ... -
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, ... -
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., ... -
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 ... -
ELISA detection of Apple chlorotic leafspot virus (ACLSV) and Apple mosaic virus (ApMV) in comparison to RT-PCR detection and the determination of genetic variation of these virus species in South Africa
(Stellenbosch : Stellenbosch University, 2014-12)ENGLISH ABSTRACT: Apple chlorotic leaf spot virus (ACLSV) and Apple mosaic virus (ApMV) are responsible for reduced yield in the South African deciduous fruit industry. These two diseases are regulated by the South African ... -
Epidemiology and control of Pseudocercospora angolensis fruit and leaf spot disease on citrus in Zimbabwe
(Stellenbosch : Stellenbosch University, 2005-12)ENGLISH ABSTRACT: Fruit and Leaf Spot Disease (FLSD) of citrus, caused by Phaeoramularia angolensis, is found only in 18 countries in Africa, the Comores Islands in the Indian Ocean and Yemen in the Arabian peninsula. ... -
Etiology and management of Neofabraea lenticel decay (bull’s eye rot) of apples in the Western Cape of South Africa
(Stellenbosch : Stellenbosch University, 2019-12)ENGLISH ABSTRACT: Postharvest lenticel decay of apple and pear fruit caused by Neofabraea malicorticis, N.perennans. N. vagabunda and N. kienholzii is a disease more commonly known as Bull’seye rot. In South Africa, only ... -
Evaluation of maize breeding populations for resistance to Fusarium verticillioides and fumonisin contamination
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH SUMMARY: Maize is an important crop cultivated all around the world. It is the main source of carbohydrates for over 200 million people in Sub-Saharan Africa. Daily consumption rates can reach up to 500 g per person ... -
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, ... -
Fungicide resistance and control of citrus green mould
(Stellenbosch : Stellenbosch University, 2014-04)ENGLISH ABSTRACT: Please refer to full text for abstract -
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 ... -
Fusarium graminearum species complex (FGSC) composition in South African wheat and maize grown in rotation
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Fusarium graminearum is an important pathogen of economically important cereal crops. Recently, the morpho-species has been reclassified as a species complex consisting of 16 phylogenetic species, called ... -
Genetic characterization and fungicide resistance profiles of Botrytis cinerea in rooibos nurseries and pear orchards in the Western Cape of South Africa
(Stellenbosch : Stellenbosch University, 2012-03)ENGLISH ABSTRACT: Botrytis cinerea Pers. Fr. [teleomorph Botryotinia fuckeliana (de Bary) Whetzel] causes serious losses of over 200 crops worldwide, including rooibos seedlings and pears. This pathogen is characterized ... -
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 ...
