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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.
Department at the UFS receives special visitors
2008-02-26
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From the left are: Prof. Hans Ausloos, Prof. Bénédicte Lemmelijn, and Prof. Fanie Snyman (Head of the Department of Old Testament at the UFS). Both Prof. Ausloos and Prof. Lemmelijn are professors in the Old Testament within the Bible Science Investigation Unit of the Katholieke Universiteit Leuven in Belgium.
Photo: Lacea Loader
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Department at the UFS receives special visitors
The Department of Old Testament in the Faculty of Theology at the University of the Free State (UFS) has for the first time received a visit from two guest professors from the Katholieke Universiteit Leuven (KU) in Belgium who are presenting undergraduate lectures.
What makes the visit even further unique is that the guest professors are a married couple who specialise in the Old Testament.
“Proff. Hans Ausloos and Bénédicte Lemmelijn are visiting the faculty for about a month to present undergraduate programmes. They are part of a co-operative agreement between the UFS and the KU Leuven. This is also a good way of giving our students exposure to European experts,” says Prof. Snyman, Head of the Department of Old Testament at the UFS.
The couple and their three children, Matthias (10), Elke (8) and Ruben (6), are staying in Prof. Daan Pienaar’s house for the duration of their stay. Prof. Pienaar is a retired professor in Biblical Science at the UFS. The children are at school in Universitas Primary School for the duration of the family’s stay in Bloemfontein. “The headmaster was very kind and provided them with school uniforms out of the school’s second hand clothing shop, of which they will not part easily as they do not wear school uniform in Belgium,” says Prof. Lemmelijn.
Proff. Lemmelijn and Ausloos cannot stop talking about the charm of the university’s Main Campus. “In Leuven the university is part of the city and the university buildings are situated amongst the city buildings. We do our shopping while the students move from one class to the other! Here, the university is a town on its own and the students are given the opportunity to socialise in a protected environment,” says Prof. Lemmelijn.
The couple is also just as impressed with Bloemfontein. “The safety issue in South Africa is accentuated in such a way in Europe that we are astounded by the peaceful and friendly atmosphere of the city. We are also surprised with the shopping centres that are under one roof. In Belgium the shops are situated far apart,” says Prof. Lemmelijn.
The couple finds the living costs – especially food – to be quite expensive. “Some basic food is even more expensive than it is in Belgium,” says Prof. Ausloos.
Over and above their commitment to lecture, the couple is also busy with research on the Greek translation of the 12 Small Prophets in co-operation with Prof. Snyman.
“This is the first time that lecturers from the KU Leuven visit the Department of Old Testament for such a long time and are part of the normal curriculum. It is interesting to note that the teaching modules between the two departments resemble each other in such a way that lectures which are presented in Leuven are also repeated here,” says Prof. Snyman.
Both Proff. Ausloos and Lemmelijn are professors in the Old Testament within the Bible Science Investigation Unit of the KU Leuven. They publish articles internationally on the editorial and text criticism of the Old Testament and are involved with international investigative programmes such as the Hexapla Project and Septuaginta-Deutsch. Prof. Ausloos is director of the Leuvense Centre for Septuagint Studies and Textual Criticism and Prof. Lemmelijn is an associate in the centre. Together they have published several financed investigative projects on the characterising of the translation technique of the Greek Bible translation.
Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za
25 February 2008
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