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Project Number: 11728
Project leader: Pietersen, G
Effective control of leafroll in commercial vineyards of red cultivars relies very heavily on visual detection of the disease in individual vines in autumn, prior to roguing…
Project Number: PPRI 16-27
Project leader: Pietersen, G
Grapevine leafroll associated virus 3 (GLRaV-3) does not produce symptoms and is generally considered to be poorly detected by ELISA and PCR in Vitis rootstocks. In…
Project Number: PPRI 13-16
Project leader: Jooste, A E C
Research worldwide and in South Africa, shows the existence of six clear molecular variants of GLRaV-3. The transmission dynamics of mixed variant infections in local…
Project Number: P04000106
Project leader: Knoetze, R
Root-knot nematodes feed on roots of grapevines, thereby restricting their ability to absorb water and nutrients, resulting in low vigour and much reduced yield. Although…
Project number: P04000280
Project leader: Knoetze, R
This study will aim to detect, identify and characterise soils that maintain specific suppressiveness to ring nematodes, leading to the identification of improved agricultural practices to conserve and enhance these soils.
Project number: GenUS GP 20-01
Project leader: Pietersen, G
In this project, researchers wish to determine whether nuclear material used within the South African wine grape industries are free of viruses/viroids, and if not, to identify those viruses still present in such material as a first step towards eliminating or managing them, in accordance with the fundamental objectives of a certification scheme.
Project number: GenUS GP 19-01
Project leader: Pietersen, G
The aim of this study is to assess the usefulness of commercial ELISA kits against grapevine fleck virus for routine use in the certification scheme of the Vine Improvement Association.
Project number: FShip Breeding
Project leaders: Lashbrooke, J; Vivier, M and Burger, P
The early stages of this project involve the establishment and implementation of specific methods and workflows (e.g. genotyping and phenotyping platforms) so that marker assisted selection could be implemented in our local grapevine breeding programme.
Project number: UWC BB 20-01
Project leader: Bladergroen, B J
In this project, an unconventional, unprecedented, inventive, ground-breaking and robust technology will be tested on winery effluent. Previous research has shown it is a promising alternative to current available technology.
Project number: IWBT 2020-01
Project leader: Vivier, M
Through the study of the natural responses that grapevines have when they are under stress (from pathogens or abiotic stress such as drought), intrinsic mechanisms that the plant uses for stress protection have been identified in previous local research. This includes compounds naturally produced by grapevines in response to stress. This project intends to confirm the ability of these natural compounds that form part of the innate defence system of plants, to protect grapevines against stresses when directly applied to grapevine plant organs.
Project number: Pathsol 20-01
Project leader: Pietersen, I
The ultimate aim of this project is to provide affordable and reliable Grapevine virus A and B, and Grapevine fleck ELISA kits for detection of all Grapevine viruses within the One-Vitis certification scheme.
Project number: GenUS GP 20-02
Project leader: Pietersen, G
The purpose of this project is to determine whether Grapevine Pinot Gris Virus occurs in the field in grapevines in South Africa.
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