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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 hosts the biggest HIV/AIDS event in its history

2007-10-05

The Chief Directorate: Community Service at the University of the Free State (UFS), in partnership with the Free State Department of Education, will host the biggest HIV/AIDS focus event in the history of the university.

The event will take place on Wednesday, 10 October 2007 on the Main Campus in Bloemfontein and the theme will be: Management of HIV/AIDS in the Workplace.

According to the Chief Director of Community Service at the UFS, the Rev Kiepie Jaftha, this event forms part of a wider role of his directorate to raise the level of awareness about the impact of HIV/AIDS within the university and the higher education sector in South Africa. It will also enhance the executive management’s buy-in and ownership of this role and incorporate the flow of HIV/AIDS information and activities into the core business of the UFS.

The focus will be on getting the executive management, middle management, aspiring managers and those who are affected by the decisions of the management, on board in the university’s endeavour to manage and create HIV/AIDS awareness in the workplace.

Most importantly, community members will also form an essential part of this event as the UFS strives to get them also involved in HIV/AIDS education and awareness.

“We hope to release the valve of denialism and stir the excitement amongst people, to encourage them to get involved in creating awareness within their workplaces, institutions and society,” said the Rev Jaftha.

To that effect, the Director of the Africa Centre for HIV/AIDS Management at the University of Stellenbosch, Prof. Jan du Toit, will deliver a keynote address. There will also be a mini-musical production called Lucky, the Hero, directed by the well-known stage performer and director of Educational Theatre and creative arts for the Africa Centre for HIV/AIDS Management, Prof. Jimmie Earl Perry.

The 25 tables for the event have been sold at a cost of R1 500 each and the beneficiaries thereof will be a local non-governmental organization (NGO), namely the Lebone Land Care Centre. The UFS has a long-standing relationship with the Lebone Land Care Centre, where students are sent as part of the implementation of their community service learning modules to enhance their practical skills. Now the university intends to formalise this partnership.

“I admire the holistic manner of approach the Lebone Land Care Centre uses towards caring for people who are infected and affected by HIV/AIDS and the way they make people realise that they can still live a meaningful life and add dignity and value to society,” enthused Rev Jaftha.

The NGO will also receive an award from Spar, one of the biggest supermarket groups in South Africa.

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

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