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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 finances are fundamentally sound

2007-12-01

The finances of the University of the Free State (UFS) remain fundamentally sound and a higher than expected surplus of about R26 million was achieved in the 2007 budget.

This announcement was made last week during the last meeting of the UFS Council by Prof. Frederick Fourie, Rector and Vice-Chancellor.

“Up to now, we could finance the considerable investments in the infrastructure from discretionary funds, in spite of the fact that Council granted us permission during 2005/06 to take up a loan of R50 million for this purpose,” said Prof. Fourie.

The higher than expected surplus of about R26 million will be used among other things for the financing of infrastructure in order to further postpone the taking up of a loan.

In support of the drive to reposition the UFS nationally as a university that is successfully integrating excellence and diversity, R5 million will be made available from the surplus for this purpose.

The Council also approved the following allocations for 2008 for the key strategic pillars of a good practice budget for the university:

Information sources: R21,1 million
IT infrastructure: R3,5 million
Replacing expensive equipment: R7,05 million
Research: R18,1 million
Capital expenditure: R28,2 million
Maintenance capital assets: R18,2 million
Reserves: R6,3 million
Personal computers for the computer laboratory: R3,5 million

For the Qwaqwa Campus R2,5 million has been set aside for these issues.

In terms of strategic priorities R8 million was allocated for the academic clusters, R2 million for equitability, diversity and redress and R6 million for equity.

The projected income for 2008 will be R849 million, while the projected expenditure, excluding transfers, will be R694 million.

“Council further approved that discretionary strategic funds be largely voted to the further upgrading of the physical infrastructure, especially the Chemistry Building, the computer laboratory building, examination venues and the Joolkol,” said Prof. Fourie.

According to Prof. Fourie, funds have been reserved for the development of the academic clusters, as well as the continuation and acceleration of the transformation programme of the UFS.

“We have also managed to revise the conditions of employment of contract appointments and align it with the latest labour practices. The phasing in of the fringe benefits of this specific group of staff members will commence in 2008,” said Prof. Fourie.

Given the dependence of the income of the UFS on student numbers, a task team was formed last year to investigate the continued financial sustainability of the UFS. The core of this task team’s recommendations is:

to increase the third income stream by using the academic clusters as the main strategy; and to apply strategies such as the recruitment and extension of the postgraduate and foreign student corps, increase the income from donations and fundraising, etc.

Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za
30 November 2007

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