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The holy grail of potatoes

02 January 2025 | Story Gerda-Marie van Rooyen | Photo Supplied

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.

News Archive

UFS congratulates Wayde van Niekerk and other students for their national and international accomplishments

2015-09-17

Kovsies showing the world that success is inevitable
Photo: Johan Roux

Students from the University of the Free State (UFS) have not only conquered South Africa (SA), they have also left footprints in the world. During 2014 and 2015, our students have performed well in various fields.

A special celebratory event was held at the Bloemfontein Campus on Tuesday 15 September 2015. Members of the Rectorate, Student Representative Council (SRC), Grey College Secondary School personnel and former principal, Mr Johan Volsteedt, as well as UFS staff members and students gathered at the Callie Human Centre to congratulate those students who have recently represented the university with excellence atnational and global levels. Also present were representatives from the Department of Sports Arts Culture and Recreation (SACR) in the Free State and the Free State Sport Confederation (FSSC).

Sports leadership has proven to be one of Kovsies’ areas of expertise. From Wayde van Niekerk making international headlines as the 2015 Men’s 400m World Sprint Champion, to Nicole Walraven who was named as the SA under-21 Hockey 2015 Player of the Year, speaks the language of winners.

Wayde believes that his achievements are also for his family, friends, mentors, and the university community to rejoice in.“What I achieved is our achievement,” he said “the person I am today is because of the people around me.” Also supporting him at this event was MsAns Botha, his coach together with his family and friends.

Andricia Hinckemann’s commitment to promote environmental sustainability in light of the global warming crisis earned her the Miss Earth SA 2015 second princess status.

The UFS Debating Society also joined the ranks as highfliers when announced as South African National Universities Debating Champions for 2015. The UFS team competed in nine preliminary rounds. Devon Watson and NkahisengRalepeli from the UFS had to fight their way through nine preliminary rounds to the finals. Competing in the category English as a First Language, Devon and Nkahiseng brought yet another championship title home.

Success is music to our ears here at Kovsies, Veritas and Marjolein showed us that music can also symbolize success. These residence serenade groups took first and second place, respectively, at the 2015 ATKV National University Sêr competition.

Other students who have the world in their hands and are striving to make it a better place include Rolene Strauss (Miss World 2015), Elzane van der Berg (Deaf Miss South Africa 2014), the Shimlas (2015 Varsity Cup champions),KovsieNetball (2014 Varsity Netball champions and winners of 2014 National Premier League), KovsieTennis (2014 USSA Champions) and Varsity Sevens Champions 2015.

Prof Jonathan Jansen, Vice-Chancellor and Rector of the university remarked upon the inevitable nature of success amongst our university’s students. “Whether they are in athletics, netball, or debating, Kovsie students do well in every aspect of their lives.”

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