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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

US ambassador impressed by the UFS class of 2010

2010-01-19

Mr Donald Gips

“Students should learn to look beyond themselves to break up the barriers that keep them apart as human beings.”

This was the message of the USA ambassador to South Africa, Mr Donald Gips (pictured), to the first-year students who had enrolled at the university for the first time, during the grand opening of the Get Success@UFS Week at the University of the Free State (UFS) in Bloemfontein.

“Take the advantage of the opportunities you have here to grow outside yourselves, to prove the value of diversity and make this university a place where you will grow as an individual; and also contribute back to the community,” he said.

He said the UFS was a beautiful campus undertaking an incredible mission to change the face of South Africa.

“It is incredible and exciting to listen to the energy and to see the enthusiasm of all the students here to make this one of the best universities in the country and setting an example to the world,” he said.

On transformation at higher education institutions, Ambassador Gips said that, just like in the USA, transformation was incredibly difficult.

“It is an ongoing project that everyone has to keep working towards,” he said. “But I am quite convinced that being here today and watching the students and professors tackle this challenge, this university will succeed.”

Addressing the new students, the Rector and Vice-Chancellor of the UFS, Prof. Jonathan Jansen, quoted from one of the famous speeches by the great Martin Luther King Jr. and asked the question: “What is or can be the content of your character?”

He implored the students to judge fellow students by the content of their character and not by the colour of their skins.
“If we succeed with you, our country will succeed. If we succeed with you, our university will succeed,” he said

Prof. Jansen said it was the first time in the history of the UFS that students were integrated as human beings.

“This is the most integrated group of students the UFS has ever had,” he said.
He appealed to them to live their dreams, learn to embrace others, study seriously, make a difference; and guide their leaders.

The purpose of the Get Success@UFS Week is to acquaint the first-year students with the UFS and the academic opportunities that are available to them. The aim is to:
help students succeed academically;
help students to adjust to and get involved in the university environment;
assist parents and other family members in understanding the complexity, demands and services in the University environment; and
provide an opportunity to learn more about incoming students through formal and informal means.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
19 January 2010

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