Department of Genetics
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Monetary value of the impacts of filamentous green algae on commercial agriculture : results from two geographically different case studies
(South African Water Research Commission, 2016-07)This paper presents estimates of the monetary value of the impact of eutrophication (algae) on commercial agriculture in two different catchments in South Africa. A production function approach is applied to estimate the ... -
Microsatellite-based DNA fingerprinting of selected grapevine cultivars
(South African Society for Enology and Viticulture, 2018)Cultivar identification by ampelography is often difficult and is sensitive to environmental conditions, thus it can be problematic to distinguish between closely related cultivars. DNA fingerprinting offers an alternative ... -
Isolation and characterisation of novel enzymes producing fructo- and galacto-oligosaccharides through a metagenomic approach
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Prebiotic oligosaccharides and polymers are a form of dietary carbohydrate that are selectively fermented by the microbiota of the lower gastro intestinal tract and confer a health benefit to the host ... -
Genetic and phenotypic characterisation of commercial dusky kob (Argyrosomus japonicus) cohorts
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Dusky kob, Argyrosomus japonicus, is a large Sciaenid finfish that has been identified as an emergent aquaculture species in South Africa. Current production practices for dusky kob are based on mass ... -
Improving wheat grain yield by employing an integrated biotechnology approach
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Wheat is a widely cultivated crop as it forms a significant part of the world’s diet, especially within developing countries. However, food insecurity is increasing at a rapid rate and to meet this ... -
Genome and transcriptome sequencing of vitis vinifera cv pinotage
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Examining the genetic basis of natural phenotypic variation, and the transfer of this knowledge to a breeding program for improved crop cultivars or livestock races, is a major goal for biological ... -
Genome of Russian wheat aphid an economically important cereal aphid
(BioMed Central, 2017-12-28)Although the hemipterans ( Aphididae ) are comprised of roughly 50,000 extant insect species, only four have sequenced genomes that are publically available, namely ... -
Development of a hairy root bioreactor from Stevia rebaudiana to produce steviol glycosides
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH SUMMARY: Extracts from the leaves of Stevia rebaudiana, a plant native to South America, have been used as natural sweetener for centuries. With the global epidemic of obesity linked to increased prevalence of ... -
Characterisation of the glycoside hydrolase domain of a novel bi-functional metagenomic clone for use in the biofuel production industry
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: The current practice of 1st generation biofuel production is marred by several hurdles, namely concerns over food security and the moral dilemma created by using edible feedstocks as a biofuel ... -
Characterising the viral and microbial diversity in old and young grapevines
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: There is anecdotal evidence suggesting that old vines produce wines of higher quality than young vines. In South Africa, vines are generally regarded ‘old’ when they reach 35 years of age, while ‘young’ ... -
Biophysical characterization of the mineral composition of seeds with varying genetic background including transgenic sorghum with reduced amounts of the storage protein kafirin
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Cereals are globally recognised as a cornerstone of human nutrition, and as a result play a pivotal role in efforts to address food insecurity and malnutrition. In Africa, the highest rates of hunger ... -
Investigating the recovery phenotype phenomenon in Aster Yellows-infected Grapevine
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: South Africa is ranked as the seventh largest wine producing country in the world. Grapevine is one of the most important crops, which warrants extensive research on pathogens and diseases that impact ... -
Molecular fingerprinting and molecular characterization of the ARC's peach collection in South Africa
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Peaches and nectarines are important deciduous fruits in South Africa, both belonging to the species Prunus persica. The Agricultural Research Council (ARC) at Infruitec-Nietvoorbij in the Western Cape ... -
Genetic diversity and identification of putative recombination events in Grapevine rupestris stem pitting-associated virus
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Phylogenetic analysis for variant classification plays a key role in the characterisation of the aetiological role of viruses. The genomic regions selected to identify viral variants and the occurrence of ... -
Fingerprinting and molecular characterisation of ARC's apricot and plum collection
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: In South Africa apricot (Prunus armeniaca) and plum (Prunus salicina) production forms part of the economically important stone fruit industry, which is mainly situated in the Western Cape, Northern Cape ... -
A targeted investigation of Diuraphis noxia (Hemiptera: Aphididae) methylation
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT: Diuraphis noxia (Kurdjumov, Hemiptera: Aphididae – or Russian wheat aphid, RWA) is an economically important phloem-feeding pest of wheat and barley. The most effective method for controlling RWA ... -
In silico analysis of the grapefruit sRNAome, transcriptome and gene regulation in response to CTV-CDVd co-infection
(BioMed Central, 2017)Background: Small RNA (sRNA) associated gene regulation has been shown to play a significant role during plant-pathogen interaction. In commercial citrus orchards co-infection of Citrus tristeza virus (CTV) and viroids ... -
The use of high-through put small RNA sequencing reveals differentially expressed microRNAs in response to aster yellows phytoplasma-infection in Vitis vinifera cv. Chardonnay
(Public Library of Science, 2017)Phytoplasmas are cell wall-less plant pathogenic bacteria responsible for major crop losses throughout the world. In grapevine they cause grapevine yellows, a detrimental disease associated with a variety of symptoms. The ... -
Assessing the control potential of aldicarb against grapevine phylloxera
(South African Society for Enology and Viticulture, 1992)Aldicarb 15 G soil treatments in vineyards were evaluated for their phylloxera control potential. A post-harvest application was made on single vines and phylloxera populations on roots were quantified using a washing and ... -
Molecular analysis of plant growth promoted with low molecular weight compounds in relation to genetically altered photosynthetic carbohydrate partitioning in higher plants
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: Despite the impressive advances that have been made over the years in improving both plant growth and yields, there is little reason to become complacent about these developments, especially with regard ...
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