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02 January 2025
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Story Gerda-Marie van Rooyen
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Photo Supplied
Leading the research in South Africa is Prof Linus Franke from the Department of Soil, Crop and Climate Sciences.
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.
Spring graduation ceremony
2008-09-15
| Law awards largest number of doctorates |
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The Faculty of Law at the University of the Free State (UFS) this week awarded four doctorate degrees during the spring graduation ceremony, which took place on the Main Campus in Bloemfontein. This is the largest number of doctorates awarded by the faculty during one graduation ceremony. Here are, from the left: Dr Tjaart Maré, Dr Ilze Keevy, and Dr Pierre Rabie. Dr Daniel Mekonnen was absent when the photo was taken. Photo: Leonie Bolleurs
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| UFS awards degrees |
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The University of the Free State's (UFS) spring graduation ceremony took place on the Main Campus in Bloemfontein this week. Altogether 840 diplomas and degrees were awarded. Here are, from the left: Mss Mamokete Marokane, who obtained a B.Com. Human Resource Management degree, Elzaan Jacobs, who obtained a B.Com. Accounting degree, and Mmanyefolo Mosia, who also obtained a B.Com. Accounting degree. Photo: Leonie Bolleurs
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The University of the Free State's (UFS) spring graduation ceremony took place on the Main Campus in Bloemfontein this week. Altogether 840 diplomas and degrees were awarded. Here are, from the left: Mr Roger Potgieter, M.B.A. degree, Ms Amanda Share, M.B.A. degree, Zarita Naudé, B.Com. Accounting, and Mr Kobus van den Berg, M.B.A. degree. Photo: Leonie Bolleurs
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| UFS awards extraordinary degree |
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Prof. Ivan Horak, extraordinary professor at the University of the Free State's (UFS) Department of Zoology and Entomology, this week became the third person in the history of the UFS to receive the D.Sc. degree. The degree was awarded to him during the spring graduation ceremony which took place on the Main Campus in Bloemfontein. Here are, from the left: Prof. Jo van As, Head of the Department of Zoology and Entomology, Prof. Horak, and Ms Ellie van Dalen, Lecturer at the UFS Department of Zoology and Entomology.
Photo: Leonie Bolleurs
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| UFS awards doctorate degrees |
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Altoghether 29 doctorate degrees were awarded this week during the University of the Free State's (UFS) spring graduation ceremony on the Main Campus in Bloemfontein. During the chancellor's dinner are, from the left: Dr Anabela Da Silva, a student from Mozambique who obtained a Ph.D. in Plant Breeding, Prof. Maryke Labuschagne, UFS Department of Plant Sciences and promoter of Dr Da Silva, Dr Edward Jurua, a student from Uganda who obtained his Ph.D. in Astro Physics, and Dr Pieter Meintjes, from the UFS Department of Physics and promoter of Dr Jurua.
Photo: Gerhard Louw
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| Spring graduation ceremony |
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Dr. Meshach Aziakpono (middle) is one of the students of the University of the Free State (UFS) who obtained a Ph.D. (Economics) during the spring graduation ceremony on the Main Campus in Bloemfontein. Here he is with Prof. Phillipe Burger (left), Head of the Department of Economics at the UFS and mentor of Dr Aziakpono, and Prof. Stan du Plessis (right), Department of Economics at Stellenbosch University and co-mentor of Dr Aziakpono.
Photo: Gerhard Louw
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