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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.
New York academic pays visit to UFS
2010-08-02
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Prof. Teboho Moja, a professor of Higher Education at NYU, paid a successful visit to the UFS. Here are, from left: Mr John Samuel, Interim Director: International Institute for Studies in Race, Reconciliation and Social Justice, UFS; Dr Bryan Urbsaitis, Assistant-Director of Study Abroad, Pace University, USA; Prof. Moja; Prof. Jonathan Jansen, Rector and Vice-Chancellor, UFS; and Dr Olihile Sebolai, Directorate Research Development, UFS.
Photo: Arthur Johnson
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Prof. Teboho Moja, a professor of Higher Education from New York University (NYU), paid a fruitful visit to the University of the Free State (UFS). During her visit Prof. Moja, who is originally from South Africa, engaged with various stakeholders to further strengthen relations between the UFS and NYU.
Prof. Moja’s research focus is on the change in higher education and the implications of globalisation on higher education systems. As part of her visit to the UFS, Prof. Moja delivered a public lecture, entitled “Diversity oriented transformation for Teaching and Learning”. The lecture was presented by the Directorate Research Development and the International Institute for Studies in Race, Reconciliation and Social Justice.
Prof. Moja studied at the University of the Witwatersrand and obtained her Doctorate in Philosophy at the University of Wisconsin-Madison in the United States of America (USA).
In 1998 she became the first black woman to be appointed as chairperson of the council of the University of South Africa (UNISA). She is also an honorary professor at the University of Pretoria (UP).
On her visit to the UFS Prof. Moja was accompanied by Dr Bryan Urbsaitis from Pace University in New York and Ms Gina Canterucci from NYU. She also led a group of postgraduate students in International Education Studies. These students interacted with fellows from the Grow Our Own Timber Programme of the UFS. The interaction greatly contributed towards enhancing both student groups’ acuity on academic and social matters.
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