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02 January 2025
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Story Gerda-Marie van Rooyen
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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.
Ecofeminism a possibe solution to impending famine
2016-05-12
Dr Inge Konik (right) is pictured with her postdoctoral supervisor, Prof Bert Olivier, Senior Research Professor at the Department of Philosophy.
Photo: Valentino Ndaba |
In view of the environmental and social problems faced in South Africa today, researchers such as Dr Inge Konik are hard at work mapping these issues and seeking long-term solutions. Dr Konik, a lecturer in the Department of Journalism, Media and Philosophy at the Nelson Mandela Metropolitan University (NMMU) shared her views in a presentation on 6 May 2016. She spoke about revaluing indigenous ways of life and subsistence-focused lifeways, linking this to materialist ecological feminism, or ecofeminism for short.
Dr. Konik’s presentation, hosted by the Department of Philosophy at the Bloemfontein Campus of the University of the Free State (UFS), was entitled: “Transversal reflections on ecological feminism and ubuntu.” The research underpinning the presentation derived from Dr Konik’s doctoral thesis which was supervised by Ariel Salleh (University of Sydney) and Andrea Hurst (NMMU).
Dr Konik’s research suggests that ecofeminism - which is a convergence between environmentalism and feminism - may hold the answers to the question of how we may work against environmental and social injustices. She also proposed that society look back toward subsistence communities of the past, and those currently being marginalized in our industrial societies, and linked the values evidenced in the practices of these communities to the African philosophty of ubuntu. In order to solve complex contemporary challenges Dr Konik suggests that we combine these seemingly disparate theoretical frames - ubuntu and ecofeminism - by applying a transversal approach, which involves openness to dialogue between traditions.
“My focus was on ecological feminism and critical theory and very specifically on South Africa, given the challeges South Africa faces - the environmental and social challenges and what kind of frameworks would be helpful,” said Dr Konik, who will officially become a postdoctoral research fellow at the department as of July 2016.
Prof Pieter Duvenage, Head of the Departement, stated that compelling research outputs are anticipated from Dr Konik as a fellow.