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02 January 2025 | Story Gerda-Marie van Rooyen | Photo Supplied
Prof Linus Franke
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.

News Archive

Award-winning architect firm presents the 29th Sophia Gray Memorial Lecture and Exhibition
2017-09-07

  Description: Arch break Tags: Sophia Gray Memorial Lecture and Exhibition, Elphick Proome Architects, South African Institute of Architects

At the Sophia Gray Bursary Fund breakfast, were from the left:
Henry Pretorius, head of the UFS Department of Architecture,
AJ Corbett, and Boipelo Morule, third-year student
in Architecture and Prof Francis Petersen, UFS Rector
and Vice-Chancellor, 
at the UFS
Photo: Stephen Collett

The laureates of this year’s Sophia Gray Memorial Lecture were George Elphick and Nicholas Proome from the award-winning architecture firm, Elphick Proome Architects (EPA). Over the past 28 years this Durban firm has received 26 awards and its work has been published in 26 magazines.  

From bedroom to boardroom
EPA is involved in major corporate architecture as well as several residential projects. It believes that good design is produced from careful study and research combined with sound technical knowledge and artistic judgement. At the 29th Sophia Gray lecture, presented by the Department of Architecture at the University of the Free State, EPA addressed the Bloemfontein community, stating that architecture was about people, space and light. 

For EPA, architecture is the form of art with the most impact on society. “Ultimately, our architecture needs to be enjoyed and be hard to forget,” it said. 

In its three decades of practice, most of EPA’s built work has been executed in South Africa. It has also completed projects beyond South African borders, including Mozambique, Kenya, Ghana, and France. 

The lecture was followed by the opening of the 29th Sophia Gray Memorial Exhibition at Oliewenhuis Art Museum.

New PhD in Architecture with Design announced
A highlight at this year’s lecture was the announcement by Henry Pretorius, the head of the department, of a new and innovative doctoral programme, the PhD in Architecture with Design. From 2018, students with a MArch (professional) or MArch can enrol for this postgraduate qualification.

“The programme recognises the intelligence and ingenuity of design. Its primary objective is to harvest and study the implicit orientations, operations, and achievements of design, and to enlist creativity in the formation of new knowledge. The degree facilitates analytical reflection, stimulates creative action, and opens new insights into the unique logic of design,” said Pretorius.

“Although design-based research has gained international momentum in recent years, similar research has not been done in South Africa until now.”

Contribution to the Sophia Gray Bursary Fund 
During a breakfast function, the department also announced another initiative, the Sophia Gray Bursary Fund. Prof Francis Petersen, Rector and Vice-Chancellor at the UFS, said that the type of architecture in developing countries was different from places such as New York and other big cities in developed countries. For a transformed profession we need architects from different cultures and demographics in the system. The bursary fund was a fantastic starting point for this to happen. 

The Sophia Gray Bursary Fund initiative is part of a greater call to alumni and friends of the department to be actively involved in the department’s continuous development and future endeavours towards imagination, care, and excellence.
AJ Corbett, founder and director of TCN Architects in East London, made the first contribution towards the fund. 

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