Browsing Doctoral Degrees (Genetics) by Title
Now showing items 35-54 of 59
-
Manipulation of pyrophosphate fructose 6-phosphate 1-phosphotransferase activity in sugarcane
(Stellenbosch : University of Stellenbosch, 2006-03)The main aim of the work presented in this thesis was to elucidate the apparent role of pyrophosphate fructose 6-phosphate 1-phosphotransferase (PFP) in sucrose accumulation in sugarcane. PFP activity in sugarcane ... -
Mannoprotein production and wine haze reduction by wine yeast strains
(Stellenbosch : Stellenbosch University, 2012-12)ENGLISH ABSTRACT: Wine protein haze formation is a major challenge for wine makers, and several wine clarifying agents such as bentonite are used in the industry to protect wine from this occurrence. However, clarifying ... -
Mapping and restructuring of an Ae. kotschyi derived translocation segment in common wheat
(Stellenbosch : University of Stellenbosch, 2010-12)ENGLISH ABSTRACT: The wild relatives are an important source of new genes for the genetic improvement of wheat. At Stellenbosch University the leaf and stripe rust resistance genes Lr54 and Yr37 were transferred from ... -
Mapping and survey sequencing of Dn resistance genes in Triticum aestivum L.
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT : Diuraphis noxia Kurdjumov (Russian Wheat Aphid; RWA) is a pest of wheat and barley that has spread from its home range in the fertile crescent to most wheat producing countries except Australia. Since ... -
Marker assisted breeding in sugarcane : a complex polyploid
(Stellenbosch : University of Stellenbosch, 2007-03)Association analysis was used to improve the efficiency of breeding sugarcane varieties for the negatively correlated traits of resistance to sugarcane smut and the eldana stalk borer. 275 RFLP and 1056 AFLP markers were ... -
Modulation of ascorbate peroxidase activity by nitric oxide in soybean
(Stellenbosch : Stellenbosch University, 2012-12)Salinity stress is one of the major environmental factors that lead to poor crop yield. This is due to overproduction of reactive oxygen species (ROS) which consequently lead to oxidative stress. Although these ROS may be ... -
Modulation of root nodule antioxidant systems by nitric oxide : prospects for enhancing salinity tolerance in legumes
(Stellenbosch : University of Stellenbosch, 2010-12)ENGLISH ABSTRACT: Salinity is one of the major limiting abiotic stresses on legume plant yield, leading to early senescence of root nodules. This occurs because of accumulation of reactive oxygen species (ROS) in plant ... -
Modulation of the Vitis vinifera cv. ‘Chardonnay’ microRNA and mRNA transcriptomes in response to aster yellows phytoplasma-infection
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Aster yellows (AY) phytoplasmas are part of a group of cell wall-less plant pathogenic bacteria responsible for a detrimental disease known as grapevine yellows (GY). The molecular mechanisms of AY ... -
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 ... -
The molecular analysis of the effects of lumichrome as a plant growth promoting substance
(Stellenbosch : University Stellenbosch, 2009-12)ENGLISH ABSTRACT: Through powerful signal molecules, rhizobacteria affect fundamental processes in plants. In recent years, a number of novel rhizobial molecules have been identified that positively affect plant growth and ... -
Molecular characterisation of South African isolates of grapevine fanleaf virus and a new, associated satellite RNA
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: Grapevine fanleaf virus (GFLV) is one of the oldest, most widespread and devastating viruses infecting grapevine, and occurs globally where Vitis vinifera is grown. In South Africa (SA) GFLV is predominant ... -
Molecular studies of galactan biosynthesis in red algae
(Stellenbosch : Stellenbosch University, 2013-12)ENGLISH ABSTRACT: Sulfated galactans (agarans and carrageenans) are accumulated in the cell wall of various red algae (Rhodophyta) species. These polysaccharides are of commercial importance in the food, pharmaceutical ... -
Molecular studies on phosphate homeostasis in higher plants
(Stellenbosch : University of Stellenbsoch, 2010-03)ENGLISH ABSTRACT: Phosphorus (P) is essential for the survival of all living organisms and forms part of several key biological molecules and processes. The basic biological function of all cells depends on the availability ... -
Nitric oxide-mediated signaling in legumes and its role in maize responses to salt stress
(Stellenbosch : University of Stellenbosch, 2011-03)Please refer to full text to view abstract. -
A novel marker technique : using miniature inverted-repeat transposable elements (MITEs) in combination with resistant gene analogues (RGAs)
(Stellenbosch : Stellenbosch University, 2001-12)ENGLISH ABSTRACT: Given the organisation of the maize genome as well as demands placed on the saturation of molecular linkage maps it would be desirable to identify informative molecular markers that is located or linked ... -
Population genetic structure and demographical history of South African abalone, Haliotis midae, in a conservation context
(Stellenbosch : University of Stellenbosch, 2009-03)ENGLISH ABSTRACT: South African abalone, Haliotis midae, has been the subject of major concern regarding its survival and conservation over the last decade or more. Being the only one of five endemic species with commercial ... -
Population genetics of Galeorhinus galeus, Carcharhinus brachyurus and Rhinobatos annulatus- implications for regional fisheries and elasmobranch conservation
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: Elasmobranchs (sharks, skates and rays) are highly exploited world-wide and more vulnerable than most teleosts due to their life history traits (e.g. late age at maturity, low fecundity and slow growth). ... -
Reproduction of the South African abalone, Haliotis midae
(Stellenbosch : Stellenbosch University, 2011-12)ENGLISH ABSTRACT: Currently, South African aquaculture is dominated by the cultivation of Haliotis midae, which is estimated as the most lucrative sector of the industry, with 934 t being export in 2008, totalling an income ... -
Signatures of selection in natural and cultured Abalone (Haliotis midae) : a population genomics study
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: The South African abalone, Haliotis midae, commonly known as perlemoen, is an economically important gastropod mollusc. Historically, this species maintained a lucrative fisheries sector; however with ... -
Small RNA profiling of grapevine leafroll-associated virus 3 infected grapevine plants
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT: One of the most important viral diseases of grapevine worldwide is grapevine leafroll disease (GLD). A number of viruses from the family Closteroviridae have been associated with this disease, though Grapevine ...
