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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

Law students rated among the top in the world

2007-04-18

The UFS team that competed in the moot arbitration competition in Austria was, front from the left: Sunette Visser and Dee Leboela; back from left: Lucian Companie, Vicky Olivier and Deman Smit.

UFS Law students rated among the top in the world

A team of eight students from the Faculty of Law at the University of the Free State (UFS) has put the university among the top universities in the world when it was ranked 46th out of 177 universities that recently took part in the Willem C. Vis International Commercial Arbitration Moot competition in Vienna, Austria.

Universities from more than 55 countries took part in the competition and 1 800 arguments were delivered over a period of seven days. The UFS team competed against countries such as Switzerland, Russia, Lapland and France.

The team did exceptionally well in all the arguments and was complimented on oral performance and litigation skills. “In the final round, one of the arbitrators, who is a practising international trade lawyer and arbitrator, said that the team’s oral arguments were of exactly the same standard as that of practising international trade lawyers in real arbitrations,” said Prof. Elizabeth Snyman-Van Deventer, coach of the team and lecturer at the Department of Mercantile Law.

To put the cherry on top, one of the team members, Deman Smit, received an individual oralist award and an honourable mention as one of the best speakers. His score of 138 out of 150 placed him within three (3) points of the international individual winner.

The Dean of the Faculty of Law, Prof. Johan Henning said: “The fact that Deman missed out on receiving the top speaker award by a couple of points is a striking example of the world class students this faculty is delivering. It also shows that the faculty needs not to stand back for law faculties such as those of Harvard, Freiburg, Munchen, Stanford and Sorbonne.”

The Willem C. Vis International Commercial Arbitration Moot is an annual competition organised by the Institute of International Commercial Law at the Pace University School of Law in New York, United States of America. The goal of the competition is to foster the study of international commercial law and to train students in methods of alternative dispute resolution.

“The Faculty of Law also sees this competition as part of our development strategy to develop skilled arbitrators for commercial disputes. There is a need in Africa for commercial lawyers to facilitate international trade. This programme is also in line with the development strategies of the African Union,” said Prof. Snyman-Van Deventer.

The UFS team comprised of: Dee Leboela, Smit, Lucien Companie, Vicky Olivier, Sunette Visser, Qaqamba Vellem, Hanno Bekker and Lucy Nthotso.

Media release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
18 April 2007

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