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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 academic discusses Dutch, Afrikaans and African languages

2006-05-22

During the colloquium presented in Belgium by the Province Antwerp were from the left Prof Pol Cuvelier (University of Antwerp), Prof Theo du Plessis (Director: Unit for Language Management at the UFS), Mr Ludo Helsen (Permanent Deputy: Province of Antwerp) and Mr Jean-Pierre Rondas (Flemish radio journalist).

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UFS academic discusses Dutch, Afrikaans and African languages at international conference

Prof Theo du Plessis, Director of the Unit for Language Management at the University of the Free State (UFS), was the main speaker at a colloquium titled “Routes: Where to now? - Een traject van het Nederlands naar het Afrikaans en de Afrikatalen”, which was recently presented by the Province Antwerp in Belgium.

The aim of the colloquium was to discuss the future cooperation in the field of language between the Province Antwerp and South Africa.

The Province Antwerp is already involved with projects in South Africa. One of these projects is the Multilingual Information Development Programme (MIDP), a partnership project between the UFS and the Free State Province that is mainly funded by the Province Antwerp.

The project has been running since 1999 and was recently in the news with the presentation of a symposium on multilingualism and exclusion on the Main Campus of the UFS. It is hoped that the Routes colloquium will indicate new stages on which can be added to the already successful cooperation in the area of language.

Prof Du Plessis’s presentation titled “Nederlands, Afrikaans en die Afrikatale – kan samewerking slaag? Die geval MIDP in die Vrystaat”, investigated the successes that have been made with the MIDP. He discussed two possible approaches to cooperation in the areas of language, that of a sentimentalistic approach against an instrumentalistic approach.

Cooperation in the first approach makes language the aim. In the second approach language is used as a means to a greater aim. According to Prof du Plessis the first approach is driven by a romantisised idea about the relation between the Flemish and Afrikaans speaking people, which may unfortunately polarise the position of Afrikaans in South Africa even further.

He argues that, given the time that we are in, the second approach will deliver more constructive results as language can among others be used for to further democracy in South Africa. This can happen by cooperation in the institutionalising of multilingualism in our society. The more languages are used in education, law and government administration, the more we can be assured a successful democracy.

The Routes colloquium was facilitated by the well-known Flemish radio journalist, Jean-Pierre Rondas. About twenty South African and Flemish language specialists took part in the colloquium. Dr Fritz Kok, outgoing chief executive officer of the ATKV took part in the opening ceremony and Dr Neville Alexander from the University of Cape Town and well-known activist for multilingualism in South Africa was also one of the main speakers.

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