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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 receives record number of applications

2011-12-31

The University of the Free State (UFS) is looking forward to the start of the new academic year in January 2012, when thousands of new students will be joining the Kovsie family.

The UFS received almost 13 000 applications for studies in 2012. This is an increase of about 80% compared to the total number of applications received in 2010 for studies in 2011.

This increase is partly attributed to the university’s new method in approaching prospective students and the marketing initiatives followed during 2011. These included visits to various schools in the country by the Vice-Chancellor and Rector, Prof. Jonathan Jansen.

“This shows that the UFS is becoming a preferred place of study. Unfortunately, we can only take in about 4 000 first-years from these applications. We will, of course, choose the best and most diverse class of students,” says Prof. Jansen.

The university’s marketing initiatives will be intensified next year where students will take part as ambassadors in the university’s student recruitment campaigns for 2013.

Mr.Rudi Buys, The Dean of Student Affairs at the UFS, says Prof. Jansen’s visit to various schools in the country was very successful. This will be continued in 2012 and student leaders from residences, associations as well as the Student Representative Council will accompany him on these visits during the course of the year.

“These learners, just like our students, are part of a new generation of new democratic South Africans. Our students are excellent examples of youth leadership in the country and we are very excited about all our initiatives,” Mr Buys said.

The UFS is aware of the fact that learners will only receive their final Grade 12 results in January 2012. Final admission will therefore only be granted upon the submission of a certified copy of the matriculation results. Fax these results to 086 586 8947 or e-mail to applications@ufs.ac.za as soon as it is available.

Important dates for Bloemfontein students

Friday and Saturday 13 & 14 January 2012: Welcoming of new first-years
Sunday 15 January: Gateway College life programme (Bloemfontein edition) begins)
Monday 16 January 2012: Registration starts

Important dates for Qwaqwa students

Thursday 12 January 2012: Arrival of first-years
Friday 13 January 2012: Gateway College Life programme (Qwaqwa edition) begins.
Monday 16 January 2012: Registration starts

For more information, Bloemfontein students can contact Student Affairs at 051 401 9102 or send an e-mail to Cornelia Faasen at faasenc@ufs.ac.za . Qwaqwa students can contact Dulcie Malimabe at 058 718 5018 or send an e-mail to malimabedp@qwa.ufs.ac.za

Media Release
Issued by: Lacea Loader
Director: Strategic Communication
Telephone: +27 (0) 51 401 2584
+27 (0) 83 645 2454
E-mail: news@ufs.ac.za
Fax: +27 (0) 51 444 6393
Web: www.ufs.ac.za

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