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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 takes lead in improving quality of training in economics in schools

2006-06-20

The fourth international workshop for trainers in the National Council on Economic Education’s (NCEE) outreach programme for Africa, Latin America, Asia and the Middle East will be presented in Bloemfontein from 18-24 June 2006.

“Because of the rapid success we achieved in the Free State with similar workshops in Economics education that were presented by the NCEE the past year, we have now invited representatives from education departments and universities of five other provinces to attend the international workshop for trainers,” said Prof Klopper Oosthuizen, lecturer at the University of the Free State’s (UFS) Department of Agricultural Economics and initiator of the cooperative agreement with the NCEE.

The UFS and the Free State Department of Education are the NCEE’s first partners in Africa who received this training. “The attendance of the five provinces and universities is the first step in the extension of the programme to the rest of the country,” said Prof Oosthuizen.

The NCEE is based in the United States of America (USA) and the workshop forms part of the council’s effort to improve the quality of the training of Economics teachers and lecturers across the world.

“South Africa is urgently in need of efforts to improve the integration of black people into the market economy. An understanding of how markets work is one of the pillars of democracy. Equipping young people with economic understanding and skills will help empower them for responsible roles as individuals and citizens,” said Prof Oosthuizen.

According to Prof Oosthuizen representatives from the education departments of the Northern Cape, Western Cape, Eastern Cape, KwaZulu-Natal and North West will also be attending the international workshop for trainers. Representatives from the Universities of Rhodes, of KwaZulu-Natal, North West and the Durban University of Technology as well as the Cape Peninsula University of Technology will also attend the workshop.

During this workshop teachers and lecturers in Economics will receive certificates.

Various subjects will be covered during the workshop such as world trade patterns, cost and benefits of free trade, exchange rates and international finance. The training will be done by representatives from the NCEE by using methods such as direct instruction and role play.

The NCEE is also in the process of training teachers and learning facilitators in the Free State in an effort to improve the quality of Economics classes in secondary schools.

“A group of 84 teachers and learning facilitators were trained in December 2005, 50 were trained in January 2006 and the last group of 40 will be trained at the UFS Main Campus in Bloemfontein from 26 June - 1 July 2006,” said Prof Oosthuizen.

During this seminar the teachers will be trained in issues such as broad social goals in an economy, economic decision making, government’s role in a market economy and fiscal policy. The training will also be done by representatives from the NCEE.

The NCEE has been working together with international partners since 1992 to strengthen their Economics teaching systems. They have already succeeded in increasing literacy in Economics at schools in the USA and more than 20 East Block countries. More than 1,5 million learners in the East Block countries have already been served by this initiative. Since 2004 the NCEE’s focus has moved away from the East Block countries to Africa, Asia, Latin America and the Middle East.

“Our future plans include strengthening the growing partnership between the UFS, the Free State Department of Education and the NCEE. We also want to establish a council and centres for economic education which will serve as an umbrella for our joint efforts,” said Prof Oosthuizen.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
20 June 2006

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