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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 appoints Prof Francis Petersen as Vice-Chancellor and Rector

2016-12-02

Prof Francis Petersen

The Council of the University of the Free State (UFS) is pleased to announce that it has decided to appoint Prof Francis Petersen as Vice-Chancellor and Rector of the UFS.

Announcing the decision to appoint Prof Petersen today (Friday 2 December 2016) during the quarterly Council meeting on the Bloemfontein Campus, the Chairperson of the UFS Council, Judge Ian van der Merwe, said the university was fortunate to be able to appoint a candidate of such good quality to the position.

Prof Petersen, Deputy Vice-Chancellor: Institutional Innovation at the University of Cape Town (UCT), and Prof Lis Lange, Vice-Rector: Academic at the UFS, were in line for the position. The university’s Selection Committee expressed equal preference for both and the two candidates were therefore recommended to Council for the position.

“It has been a truly participatory and transparent selection process, which has assisted in the Council being able to make this decision. The higher-education sector has been through a difficult and challenging time during the past few months and the Council is thankful that a leader like Prof Petersen can head the university in 2017 and beyond,” said Judge Van der Merwe.

In his statement of intent, which was submitted earlier as part of the application for the post, Prof Petersen indicated that it is important to imagine the UFS’s location in South Africa and Africa, to realise the challenges within this context, now and in the future, so as to sharpen the university’s focus to become a more inclusive, academic excellent institution, embedded in a culture of innovation. “Therefore, the ideal of academic excellence must be supported by an institutional framework of diversity and inclusivity. The Academic Project should focus on a unique educational experience for every UFS student, the enhancement of student throughput-rate in academic programmes through dedicated academic support, graduate attributes, and curriculum change and renewal,” he said. He furthermore stated that research and innovation must focus on impact and international visibility. “It is thus not only the increase in research and innovation output, but the quality and impact thereof.”

Prof Petersen was previously the Dean of Engineering and the Built Environment at UCT. He brings to the position of Vice-Chancellor and Rector his extensive experience of management in both the industry and academic sectors. He has been the executive head of strategy at Anglo American Platinum and head of the Department of Chemical Engineering at the Cape Technikon (now Cape Peninsula University of Technology). He is a member of the UCT Council, non-executive director on the Board of Pragma Holdings, non-executive director on the Board of the Unlimited Group, and Chairman of the Board of Trustees of the Seedcap (Venture Capital) Trust. Among others, he previously served as member on the Board of the Council of Scientific and Industrial Research, the National Advisory Council on Innovation, and the Council of the Academy of Science of South Africa.

He graduated from Stellenbosch University with a BEng (Chem Eng), MEng (Metal Eng), and PhD (Eng) degrees and completed a short course on Financial Skills for Executive Management. He is a recipient of the Ernest Oppenheimer Memorial Trust Award for research excellence, and was visiting professor at the Cape Technikon and extraordinary professor in the Department of Chemical Engineering at Stellenbosch University. He is a regular reviewer of journals, and member of a range of editorial boards for international journals.

Prof Petersen is also a registered professional engineer with the Engineering Council of South Africa and a Fellow of both the South African Institute of Mining and Metallurgy, and the South African Academy of Engineers.

Prof Petersen succeeds Prof Jonathan Jansen, who stepped down as Vice-Chancellor and Rector of the UFS on 31 August 2016. An international executive search agency specialising in academic appointments has assisted the UFS Council in its search for top-quality candidates.

Released by:

Lacea Loader (Director: Communication and Brand Management)
Telephone: +27 51 401 2584 | +27 83 645 2454
Email: news@ufs.ac.za | loaderl@ufs.ac.za
Fax: +27 51 444 6393

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