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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 Council adopts guidelines for the development of a new Language Policy

2015-12-04

The Council of the University of the Free State (UFS) adopted the following guidelines from the report by the Language Committee regarding the development of a new Language Policy for the UFS, based on the core values of inclusivity and multilingualism:

that English becomes the primary medium of instruction in undergraduate education and, as largely exists already, in postgraduate education.
that the UFS embeds and enables a language-rich environment committed to multilingualism, with particular attention to Afrikaans, Sesotho, isiZulu, and other languages represented on the three campuses.
that an expanded tutorial system be available to especially first-year students in Afrikaans, Sesotho, isiZulu and other languages, in order to facilitate the transition to English instruction.
that the parallel-medium policy continues in particular professional programmes, given the well-defined Afrikaans markets that, at the moment, still makes such language-specific graduate preparation relevant.
that the language of administration be English.
that the English-medium language policy be implemented with flexibility and understanding, rather than as a rigid rule disregarding the circumstances.

These guidelines were adopted at the Council meeting which took place on the Bloemfontein Campus on Friday 4 December 2015.

“This important and emotive matter was discussed in a high-quality, open debate and I am satisfied with the way the decision was reached,” says Judge Ian van der Merwe, Chairperson of the UFS Council.

The decision by Council comes after a mandate was given to the University Management on 4 June 2015 to conduct a review of the institutional Language Policy. A Language Committee was subsequently established by the University Management Committee (UMC) to undertake a comprehensive review of the existing parallel-medium policy and to make recommendations on the way forward with respect to the university's Language Policy.

The Language Committee conducted a comprehensive consultation process on the future of the Language Policy with all university stakeholders. This included multiple dialogue and submissions sessions, as well as an opinion poll on all three campuses.

Guided by the Council resolution of 4 December 2015, the UFS management will now proceed to design a Language Policy that would be presented to the UMC and Senate for voting purposes again, which vote would be formally presented to Council at one of its governance meetings in 2016. The Institutional Forum, a statutory body that represents all university stakeholders, would also advise Council at that stage, per its mandate, on the new Language Policy.

In the event that a new Language Policy is accepted by Council in 2016, the earliest possible date for implementation would be January 2017.

http://www.ufs.ac.za/templates/news-archive-item?news=6567 (26 November 2015)
http://www.ufs.ac.za/templates/news-archive-item?news=6540 (28 October 2015)
http://www.ufs.ac.za/templates/news-archive-item?news=6521 (20 October 2015)
http://www.ufs.ac.za/templates/news-archive-item?news=6469 (30 August 2015)
http://www.ufs.ac.za/templates/news-archive-item?news=6444 (25 August 2015)

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