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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.
UFS staff among proud PhD graduates
2013-06-28
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Prof Dave Lubbe with his two daughters, Leandi Steenkamp (left) and Nandi Lubbe.
Photo: Stefan Lotter
An exceptional moment at this year's graduation ceremony was when the two daughters of an academic, Prof Dave Lubbe of the Centre for Accounting, obtained their master's degrees. "It is indeed a highlight in my career that my daughters received their master's degrees cum laude at the same graduation ceremony, under my supervision!"
Prof Lubbe's two daughters, Nandi Lubbe and Leandi Steenkamp, both received their MCom with distinctions in Accounting. They completed their degrees under the supervision of Prof Lubbe and Nandi also won the Dean's medal as the best M student in the Faculty of Economic and Management Sciences. |
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Julia Ramabenyane Mamosebatho and Emmie Smit. Julia, of the Faculty of Education: School for Social Sciences and Language Education, received her PhD in Curriculum Studies. Her thesis was on The facilitative role of Grade 1 teachers in the development of reading skills in Sesotho. Emmie, from the Office of the Dean: Education, did her thesis on Appreciating the University of the Free State's transformation: A juxtaposed journey with Alice to Wonderland. With this, she obtained her PhD in Higher Education Studies.
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Merridy Wilson-Strydom and Deidre van Rooyen. Merridy obtained her PhD in Higher Education Studies. Her thesis A framework for facilitating the transition from school to university in South Africa: A capabilities approach, is a comprehensive and ambitious research project that was accomplished with great academic mastery. With her thesis, Civic culture and local economic development in a small town, Deidre obtained her PhD in Development Studies.
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| The Institute for Groundwater Studies (IGS) boasted with five students who received their doctor’s degrees at this Winter Graduation. They are, from the left, front: Vierah Hulley, Chris Moseki, Ferdie Linde, Abdon Atangana and Jacob Nyende. Back is Prof Jopie Botha, Prof Gerrit van Tonder and Dr Danie Vermeulen. |
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Modulathoko Irvin Mabokgole received his master's degree in Mathematical Statistics and Actuarial Science. He also received the Senate Medal for best master's student at the university. |
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Dave Mills obtained his master's degree in Practical Theology.
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Manie Moolman received his PhD in Higher Education Studies. With his thesis, Competence directives for enhancing the employability of hospitality management graduates in South Africa, he addresses one of the most important challenges facing higher education training in hospitality management, namely the training of employable graduates. |
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Jo-Marí Visser obtained her PhD in Criminal and Medical Law. With her thesis First generation forensic evidence and its influence on legal decision-making: A South African perspective, she investigates forensic evidence and the collection thereof at the crime scene. |
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Maralize Conradie received her master's degree in Commercial Law. The subject of her thesis is A critical analysis of the right to fair labour practices. |
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Jan Beukes received his PhD in Music – Performing Arts. This lecturer at the Odeion School of Music's thesis is titled: Oorwegings by die realisering en dokumentering van 'n duet- of duo-orreltranskripsie van Fauré se Requiem (op. 48). |