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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

Message of appreciation from the UFS acting Vice-Chancellor and Rector: Prof Nicky Morgan

2017-01-04

Dear Colleagues, Students, Parents/Guardians, Alumni, and Friends of the university

The University of the Free State (UFS) successfully completed the 2016 academic year, with the official examination ending on 14 December 2016. We have also completed the last of our graduation ceremonies, and are now preparing to accommodate the additional and ad hoc examinations in the coming weeks.

This comes after the university has successfully readjusted its academic programme in October 2016, subsequent to the disruption of activities and programmes for almost a month. All of this could not have happened without the extraordinary support and dedication of the staff and majority of the students at the UFS.

I would like to thank all our staff, parents/guardians, alumni, and friends of the UFS for the role they played during these challenging months in order to ensure that we could end the academic year successfully. If it was not for your understanding and uncompromising support, we would not have been able to complete the curricula, continue with the exams, and end the year in this way.

However, we all know that this was not an easy task. The sheer dedication and drive of our academic staff to adapt the mode of teaching and assessment of modules must be applauded, as it took courage and perseverance. Not only did they manage to complete the curricula, they also managed to do the assessment almost completely online. The incredible role of our administrative and support staff – including our security personnel – should also be acknowledged with deep appreciation.

This has been a learning experience for all, which has provided us with a solid base for academic recovery in the future.

During its quarterly meeting on 2 December 2016, the UFS Council expressed appreciation to all staff, students, and the university management for the successful completion of the 2016 academic year.

To all our alumni and donors who continued to support the UFS this year – thank you for your commitment, loyalty, and continued contribution.

Looking forward to 2017
The UFS announced on 7 December 2016 that it will be increasing tuition and housing and residence fees for 2017 by 8%. The approved increase in fees is in line with the recommendations by the Minister of Higher Education and Training, Dr Blade Nzimande, on 19 September 2016. The increases were approved by the UFS Council on 2 December 2016, with the understanding that it would be paid by the Department of Higher Education and Training by means of the fee adjustment grant for qualifying students with a combined family income of not more than R600 000 per annum.

The university management is aware of the economic realities in South Africa, as well as the financial pressure households are experiencing. The long-term financial sustainability of the UFS, as well as the financial constraints which impact teaching and learning, research, and community service, continues to remain of utmost importance to the Council and to the senior leadership of the UFS.

The university management stated its pro-poor approach to student funding on several occasions; that academically deserving students from poor and working class families should receive substantial financial support. For this reason – also because it does not place a burden on poor and working-class families – an increase in tuition fees aligned with the DHET proposal was submitted to Council for approval. The presidents of the Bloemfontein and Qwaqwa Campus Student Representative Councils were present and participated in the discussion on fees – also when Council approved the increase.

I am thankful to report that more applications for admission were received for 2017 (42 568) in comparison to 2016 (29 284), and we are excited to welcome first-year students to our campuses in January 2017. See 2017 calendar of events and information.

The necessary safety measures have been taken and contingency plans are in place when students return in 2017. The university management will continue to work with the South African Police Service to ensure stability on the campuses and the uninterrupted continuance of the Academic Project.

In conclusion, I would like to wish you a restful and safe Festive Season. Thank you once again for your crucial role in making the University of the Free State still one of the universities of choice in the country.

Best regards

Prof Nicky Morgan
Acting Vice-Chancellor and Rector
University of the Free State

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