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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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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 ...

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 ...

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). ...

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 ...

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 ...

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 ...

ENGLISH ABSTRACT: Apple stem grooving virus (ASGV) is globally associated with latent infection in commercial apple trees. Little is known about this plant-­‐virus interaction. This study made use of next-­‐generation ...