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The holy grail of potatoes

02 January 2025 | Story Gerda-Marie van Rooyen | Photo Supplied

Scientists are actively pursuing the successful breeding of diploid hybrid potatoes from inbred lines. This is expected to revolutionise potato breeding as it holds the key to rapid genetic progress. It will introduce new varieties for commercialisation through seed. Currently, existing potato variants have a gene that renders self-pollinated seeds infertile.

Prof Linus Franke, an academic in the Department of Soil, Crop and Climate Sciences at the UFS, is leading the research in South Africa. “This technology allows the production of genetically uniform potato seed that is easy to transport and largely disease-free.” He says this differs from conventional breeding whereby only vegetative propagation is possible due to tetraploid varieties in potatoes. It also risks carrying pests and diseases from one generation to the next – leading to the accumulation of pests and diseases with each round of multiplication.

Seed innovation

Prof Franke explains that Solynta BV, a seed company based in the Netherlands that produces potato varieties that can be grown from seed, has included South Africa in their research efforts because it is one of Africa’s largest producers and exporters. Through his academic relationship with Wageningen University and Research, a Dutch institution renowned for its agricultural endeavours and food production, the UFS became involved in researching hybrid potatoes grown from seed.

Diploid seeds containing two sets of chromosomes allow easier gene manipulation to increase predictability and speedier genetic progress. The breeding approach enables the incorporation of tolerance to pests, diseases, abiotic stresses (cold, heat, drought) and other desired genetic traits.

Although Prof Franke is optimistic about this research, he is not blind to disadvantages. “Potato seeds are tiny and have little energy reserves, making it harder to grow potatoes from seed than from tubers.” He says potatoes from seed will take longer to cultivate than tubers, as farmers need to grow plantlets from seeds first, adding six weeks to the growing period. “It is possible that commercial farmers can grow potatoes directly from seed. Alternatively, perhaps more likely, specialised growers will produce tubers of potatoes from seed; these tubers are then sold as seed tubers to other potato farmers, who then continue their normal practices of producing potatoes for the market from tubers.”

Financial benefits

Prof Franke says farmers have reason to get excited. “Seed potatoes will reduce input costs, as varieties with enhanced tolerance to pests and diseases require less pesticides. Planting one hectare of potatoes requires three to four tonnes of potato tubers, but only one 25 g packet of potato seeds.” Since potatoes are a more valuable commodity than maize, this technology might also increase farmers’ income potential.

News Archive

UFS establishes links with the University of Ghent

2007-11-15

The University of the Free State (UFS) recently formalised its co-operation ties with the University of Ghent in Belgium. The two universities signed a memorandum of understanding during the Accenta Trade Fair, an annual event that incorporates activities such as business seminars, cultural events and exhibitions.

The signing of the memorandum of understanding took place via a live video conference linking the two institutions of higher learning.

“It was a wonderful moment because, after signing the memorandum of understanding on the Main Campus in Bloemfontein, the Rector and Vice-Chancellor, Prof. Frederick Fourie, actually showed us his signature on the screen while we were in Ghent”, said Prof. Koos Bekker of the Department of Public Management at the UFS, who was part of the delegation from the Free State.

The delegation consisted of the Premier, Ms Beatrice Marshoff, and several MECs and senior officials from the Free State provincial government, as well as the mayor, councillors and senior officials of the Mangaung Local Municipality. Several staff members of the UFS were also part of the delegation.

According to Prof. Bekker, the two universities will co-operate in various areas in terms of the memorandum of understanding.

“In the short term the collaboration will be focused on bio-fuels, public management and the digital divide, while discussions in other areas such as health services and organised crime are also under way,” he said.

As part of the memorandum of understanding, the following collaborative efforts are also envisaged:

Mr Lyndon du Plessis, a lecturer in the Department of Public Management, will be enrolled for a Ph.D. at both universities as from September 2008.

A research project involving both universities, the Mangaung Local Municipality and the City of Ghent, will be undertaken.
An investigation will be conducted by both universities regarding the possibility of writing a book on performance management in the public sector (negotiations with the publisher in this regard are under way).

An exchange programme involving students and staff from both universities will be established.

Academics from the UFS delivered papers during one of the forums that formed part of the Accenta Trade Fair programme in Ghent. Prof. Koos Bekker and Mr Lyndon du Plessis from the Department of Public Management delivered papers on strategic planning in practice on the first day of the event, which was devoted to scientific seminars. On the second day Prof. Lucius Botes, Director of the Centre for Development Support at the UFS, delivered a paper on economic development issues, and on the third day Prof. Gustav Visser, Associate Professor in the Department of Geography at the UFS, delivered a paper on tourism.

Papers on bridging the digital divide were presented during the video conference by academics in both Bloemfontein and Ghent.

As guests of honour at the Accenta Trade Fair, the Free State delegation was allocated the main exhibition floor space, covering 1 092 m². The Main Exhibition Hall covers a total surface area of 40 000 m². The Accenta Trade Fair attracts an average of 100 000 visitors annually. The UFS also participated as an exhibitor at the Trade Fair.

This visit was a follow-up of the previous visit, during which the Free State delegation was hosted by the City of Ghent and the provincial government of East Flanders for planning purposes from 14 to 24 April 2007.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt.stg@ufs.ac.za
14 November 2007

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