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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

Reaction by the Rector of the UFS after a meeting with student leaders

2008-02-25

Reaction by the Rector and Vice-Chancellor of the UFS, Prof. Frederick Fourie, on the agreement reached at a meeting with student leaders held on Friday, 22 February 2008

Note: This is meant to be used together with the full joint statement that was issued by the UFS management and student leaders on 22 February 2008.

The memorandum of the primes of the University of the Free State’s (UFS) residences was handed to top management on Wednesday, 20 February 2008. In the memorandum they asked for a meeting with the UFS management by Friday, 22 February 2008. Such a meeting was arranged and took place.

The UFS top management, all the residence primes as well as the house committee member for first years, the executive of the Main Campus Student Representative Council (SRC) and residence heads were present.

In contrast to what is suggested in the Volksblad report of Saturday, the discussion went off very well. There was no consternation or shouting or “emotions that ran high”. It was a civilised, decent meeting as it should be at a good university. Of course, now and again individuals spoke out strongly and very enthusiastically, but it was all decent and orderly. The contribution of the primes was insightful and well formulated.

Because the top management and I wanted to listen very carefully what the problems and frustrations were, we spent nearly five hours in the meeting. The issues in the memorandum were discussed one by one. In some cases I could take a decision immediately and finalise the matter, in other cases, the management provided information that could largely finalise a matter. A number of other matters must be investigated further.

The management undertook to respond comprehensively and in writing to all the issues raised in the memorandum by Monday, 25 February 2008. This will be handed to the primes but will not be handed to the media beforehand.
It is obvious that there are matters at the university that can be better managed and that there are problems with communication within the Student Affairs division. A major change such as the new policy on diversity places huge demands on management and the administration, and problems were to be expected. However, we understand the frustration of the students in residences.

On the other hand, students don’t always make matters easier. The strong opposition of white student leaders last year, and their unwillingness to co-operate in preparation for 2008 is well known. This year it is going better. But often student leaders take positions that are very inflexible. They also see no room for adapting old habits and simply want their own way. Their contributions are then full of statements such as “It cannot be done”. This delays measures such as the full implementation of expert interpreting services, which, for the management, is a very important measure (and which is functioning very well in certain residences). Communication from student leaders to management is also not always what it should be.

At the end of the meeting student leaders and management reached an important agreement and issued a joint statement in which they committed themselves to the integration process and to good co-operation and communication. This was an important step which is a sign of rebuilding trust. Naturally everyone will still have to work hard to build on this and to strengthen mutual trust.

The course and outcome of Friday’s discussions, as requested by the student leaders, show that issues can be addressed and resolved by means of us talking to one another. This is why it is so sad that primes and house committee members went on strike on Wednesday already and stayed in tents in front of the Main Building – leaving their residences without its leadership. This created an opening for what appears to have been well planned and co-ordinated acts of vandalism by inhabitants of residences on the campus on Wednesday.

Such vandalism is unacceptable and no one can justify it.

Fortunately, order could be restored quickly during the night and all academic activities could resume without any disruption on Thursday and Friday.

FCvN Fourie

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
24 February 2008

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