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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.
UFS hockey teams crowned as Free State hockey champions
2009-09-21
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The University of the Free State’s (UFS) men’s and women’s hockey teams were recently crowned as the Free State hockey champions during the championship that took place on the university's astro fields in Bloemfontein.
Kovsie women defeated Raiders (the defending champions) 6-0 and the Kovsie men’s hockey team successfully defended their title against Tweespruit. During a penalty shootout UFS Reds beat the team of the Central University of Technology (CUT 1) 8-7, thereby ending in the third position.
Very early on the Kovsie women’s hockey team showed that they wanted to break the five-year drought without a trophy and within the first ten minutes they took the lead with 2-0 against Raiders. Liza Dreyer scored her first two goals out of four and from that moment on the Raiders were with their backs against the wall. With the score of 4-0 at halftime it was clear that Kovsies would have a second trophy in their cupboard after their recent success during the USSA championships. After halftime, Odie Swart scored another goal from a penalty corner and Liza scored her fourth goal, to bring the end score to 6-0. Malisa Kala was the other Kovsie who scored a goal.
Odie Swart, captain of the Kovsies played her last match for the Kovsies with Cat van Zuydam. She excelled in the attack as well as in the defence.
The Kovsies men’s hockey team has now done it three out of three times! Within the first twenty minutes the Kovsies men’s hockey team defeated Tweespruit with brilliant hockey by scoring three goals. Luke Sanan (2) and Kurt Henzberg (1) scored the goals. All three the goals were well-executed field goals. The current Kovsie team is surely the best-rounded hockey team that the Free State has had over the last ten years. In the past three years the students played in more than 45 club matches and they did not lose one match!
With the joy also comes sadness. For Braam van Wyk it was his last match as coach of a Kovsie team. For the past 17 years Braam has been involved with Kovsie hockey, in which he led the girls to twelve victories in the Free State league. The last three years he managed the men’s team, who won the league for the past three consecutive years, indeed an achievement. With Braam, three other senior players of the past three years made their last appearance for Kovsies. They are Morne Odendaal, Renaldo Ogle and Braam van Wyk (jr.).
Literally during the last moments of their game against CUT 1, the UFS Reds, who were 1-4 behind, scored a goal, which brought the final score to 4-4. The Kovsie students won the penalty shootout with 4-3, thereby winning 8-7 and thus ending third in this year’s men’s Free State league.
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