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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.
UFS research project aims to stimulate reflection on theological studies
2017-06-20
The first book in the ‘UFS Theological
Exploration’ academic series, called Theology
and the Post(Apartheid) Condition, has just
been released.
Photo: Supplied
The first study book with the title Theology and the Post(Apartheid) Condition, which is part of a new academic series by the Faculty of Theology and Religion at the University of the Free State, is now available. Volume 1, compiled by Professor Rian Venter as editor, is the first book in the ‘UFS Theological Exploration’ academic series, which the faculty plans to release.
Transformation
Professor Venter says the transformation of processes and practices in communicating and creating knowledge has become an urgent task for public universities in a democratic South Africa. Much reflection has already gone into the methods and scope of transformation in higher education.
Although the faculty has done work on the implications of this for theology, there is one area of investigation that has not received much attention. It concerns the role of theological disciplines such as Old and New Testament, Missiology and Systematic Theology and Practical Theology, and specifically the relationship between academic disciplines and societal growth. The book focuses on these challenges and contains the intellectual undertakings of the contributors who are all lecturers, research fellows and post-graduate students linked to the faculty.
The questions
The key questions addressed are: what are the contours of the (post)apartheid condition and what are the implications for responsible discipline practices in theology. Professor Venter says the chapters in the book are logically arranged and moves from wider to more specific concerns. The first three chapters suggest broad perspectives on the challenges for theology in higher education, chart the changes, and make some suggestions for the future.
A dynamic field of study
The book states that theology has already experienced profound and radical changes over the past decade, which is known to us. All the chapters demonstrate these fundamental shifts, which have taken place in all theological sub-disciplines. Professor Venter says the contributions in the book illustrate that theology is a dynamic field of study, and is pursued with enthusiasm and commitment. Not all disciplines in theology are investigated for the book. However, the studies reflect the interests of the theologians in the Faculty of Theology at the UFS. Professor Venter hopes that the volume might stimulate further reflection of a similar nature by other theologians.
New insights
Through the ‘UFS Theological Exploration’ research series, the faculty hopes to stimulate new insights and new developments in academic progress and overall human growth. Series editor Professor Francois Tolmie says it is a fact that strong university research is necessary to achieve academic progress and advance human prospering. He says the faculty's research series will make a valuable contribution to these causes. Professor Tolmie says the ‘UFS Theological Explorations’ contains research of the highest academic standard which has been peer-reviewed to make significant educational contributions to core theological issues in South Africa and overseas.