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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.
Dr Mercy Oduyoye receives an honorary doctorate for changing how women are viewed in theology
2015-07-08
Dr Mercy Oduyoye.
Photo: Johan Roux |
Dr Mercy Amba Oduyoye received an honorary degree from the UFS Faculty of Theology in acknowledgement of the trailblazing work she has done in the field of African women’s theology. Known as the Mother of African Women’s Theology, Dr Oduyoye is the first black woman in Africa to have received a degree in theology. Ever since then, she has been changing views on gender in theology across the globe. Still at the office at the age of 82, Dr Oduyoye’s life work has centred on two areas: her work with churches, and her work with female theologians.
Women in religion and culture
Following the 2015 Winter Graduation Ceremony on the Bloemfontein Campus, during which Dr Oduyoye received her honorary degree from the University of the Free State (UFS), she presented a lecture on women in religion and culture at the Faculty of Theology. Dr Oduyoye gave a brief overview of her involvement in organisations since the early 1970s to eliminate patriarchal structures in theology, in order to produce a relationship of partnership between women and men. An area that lies especially close to Dr Oduyoye’s heart is that of storytelling, and the use of language. Therefore, a driving force behind her work has been the question: “How do we communicate what we believe as Christians?”
Writing in a way people can understand
This question led Dr Oduyoye on her journey to vernacularise theological language, and it became her mode of writing. “Very seldom will you find the classical or official theological language in my writing, because I’m writing as if I’m speaking to a youth group, a women’s group – or even my grandmother.” In this way, communication became her focal point to present Christianity in such a way that people can understand it, thus rendering it relevant to the situation in Africa.
Changes toward inclusive language
Dr Oduyoye has gone on to author four books and over eighty articles on theology from a feminist perspective. And after toiling for many years, Dr Oduyoye can now see the changes emerging – especially in the US – as Bibles, lectionaries, and hymns are increasingly adopting an inclusive language, giving women a presence and voice within the church.