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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

The UFS issues a statement regarding the outcome of recent court case

2014-09-15

A significant number of reports appeared in the media the past week regarding this alleged attack, which happened on the Bloemfontein Campus of the UFS on 17 February 2014.

Although the senior leadership of the UFS is always in favour of good and objective journalism, we find it unfortunate that some of the facts are reported in a misleading and/or inaccurate way by some of the local media.

It is important to us that the true facts are stated. Not only for the sake of those involved, but also for our staff, students, alumni and other important stakeholders.

Here are the facts:

1.   The university was not the complainant. The alleged incident was reported to the South African Police Service (SAPS) by the victim, Muzi Gwebu, and the charges were laid by the State.

2.   At no point did the university management in any of its public statements describe this incident as a case of racism; not once. Charges of racism, then and now, must be proven, not assumed to be true simply because someone alleges racism. That is our standard approach, then and now.

3.   Cobus Muller and Charl Blom were suspended by the university, not expelled – pending the results of the court case. Emotions were running high among members of the student body and, on grounds of the evidence available to the university management at the time, as well as concerns for student and campus safety, they were suspended pending the outcome of a court hearing. This is normal procedure. Suspension does not mean you are guilty; it means you have a case to answer, either according to the university's disciplinary procedures or in the courts. For these reasons the university management will not apologise for the suspension.

4.   The university awaited the outcome of the court case before deciding whether disciplinary action should also be taken against Cobus Muller and Charl Blom. In the light of both the South African Human Rights Commission (SAHRC) and the Regional Court rulings, the university management subsequently decided to lift the suspensions of both Muller and Blom from all campuses of the university with immediate effect.

Muzi Gwebu laid serious charges with the SAPS almost immediately after the incident, and the university management believed, on the evidence then available, that the students had a case to answer.

5.   As the Director of Public Prosecutions decides on who will be prosecuted and who not, there are no grounds for the university to pay the legal fees of any of the students in this case.

Finally:
The University of the Free State will not be fazed by inaccurate and distorted information, rumour and exaggerations. We are still striving to become a truly excellent university, with a focus on the academic, but also the human development of our students.

Issued by: Lacea Loader (Director: Communication and Brand Management)
Tel: +27 (0) 51 401 2584 | +27 (0) 83 645 2454
E-mail: news@ufs.ac.za

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