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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 seals cooperation with National Institute for Higher Education

2006-03-20

At the signing of the agreement were seated from the left Prof Magda Fourie (Vice-Rector: Academic Planning at the UFS) and Dr Pearl Nkosi (Head: Academic Planning at the NIHE). Standing from the left were Dr Kopano Taole (acting head of the NIHE) and Mr Vernon Collett (Registrar: Academic Student Services at the UFS).
Photo: Stephen Collett

UFS seals cooperation with National Institute for Higher Education

A formal memorandum of understanding was recently signed between the University of the Free State (UFS) and the National Institute for Higher Education in the Northern Cape (NIHE).

The memorandum was signed to give both institutions a clear understanding of the way in which collaborative programmes should be implemented.

“Although the UFS has been presenting two bachelors degree courses (i.e. B Soc Sc in Human and Societal Dynamics and B Com in General Management) and the Career Preparation Programme at the NIHE since 2003, the cooperative agreement was never formalised,” explained Prof Magda Fourie, Vice-Rector: Academic Planning at the UFS, during the signing ceremony.

These academic programmes, presented by facilitators living in Kimberley and lecturers from the UFS, serve 270 students and the entry requirements of the programmes are determined by the UFS.

Prof Fourie said the UFS had a history of a relationship with the NIHE. The partnership should be seen as an example of how two institutions of higher learning can work together to serve the needs of the students in the region.

“The memorandum of understanding is part of the UFS’s commitment to and engagement with the central region. As the NIHE is currently operating in a policy vacuum, the memorandum is underpinned by certain principles aimed at providing some parameters within which the relationship is established and developed,” she said.

Dr Kopano Taole, acting head of the NIHE, added to this by saying that the understanding of where the NIHE wants to take the partnership is now reflected in the memorandum of understanding.

“The memorandum is the culmination of many years of hard work and of helping the people of the region. The continued input and guidance of the UFS is of tremendous help to us and through this we gained a greater sense of what the NIHE can grow to be,” he said.

The NIHE is a joint initiative of the BHP Billiton Development Trust (BBDT) and the Northern Cape Provincial Government and was established in June 2004. The National Plan for Higher Eduation (NPHE 2001) proposed the establishment of the NIHE in the Northern Cape to serve as the administrative and governance hub for ensuring the coherent provision of higher education through programme collaboration between the higher education institutions operating in the Northern Cape.

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 March 2006

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