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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

Lots of inspiration at Autumn Graduation Ceremony

2013-04-18

Graduates celebrate the results of years of study at the graduation ceremony on the Bloemfontein Campus.
Photo: Hannes Pieterse
17 April 2013

Live streaming of ceremonies available from 16 April - 19 April 2013: http://www.ufs.ac.za/ufslivestreaming/

Joshua Johnson YouTube video

The university’s Autumn Graduation Ceremony got off to a vibrant start with energetic performances and inspiring messages for graduates.

Joshua Johnson, an American student who uses his talent for tap-dancing to fund his tertiary education, mesmerised the audience on the first of the four-day graduation ceremony with his story of hope and perseverance. The student from Penn State University travels five hours by bus to New York every weekend where he tap-dances on the subway trains to earn money for his tuition fees.

Delivering a keynote address, Joshua told graduates that, in order to achieve their goals, they have to understand and work diligently with the 24 hours they get to live daily. “Start with a bang and end with a bang,” he said, encouraging the audience in the nearly-packed Callie Human Centre to join him in a rhythmic tap-dancing beat.

“Don’t follow in the footsteps of someone else. Take the beat of life, but add your rhythm to it," his wise words resonating with the exhilarated graduates.

Joshua will be the guest speaker at the ceremonies on 16, 17 and 19 April 2013 and will deliver a dance item during each occasion.

Dr Khotso Mokhele, Chancellor of the University, echoed Joshua‘s message, telling graduates not to be discouraged by life’s difficulties.

“Take what you have learned over the last three or four years and use that knowledge to reach your goal,” he advised.

Prof Jonathan Jansen, Rector and Vice-Chancellor, encouraged them to continue to study. “To break the cycle of poverty, get an education, get a degree.” He told them that as graduates they are ten times more likely to get a job, with the odds rising as they continue their postgraduate studies.

Well-known radio host and Idols South Africa judge, Gareth Cliff, will be the guest speaker at two ceremonies on 18 April 2013. He will be joined by Vicus Visser, the South African YouTube singing sensation. Dubbed Bloemfontein’s Justin Bieber, Vicus and his brother Vincent will perform during these two ceremonies.

The programme for the respective ceremonies is:

Wednesday 17 April

09:30 Diplomas and certificates up to and including honours degrees in the Faculty of Education.
14:30 Diplomas and certificates up to and including honours degrees in the Faculties of Health Sciences, Law and Theology.

Thursday 18 April

09:30 Diplomas and certificates up to and including honours degrees in the Faculty of Natural and Agricultural Sciences: only Agricultural Sciences and Architecture.
14:30 Diplomas and certificates up to and including honours degrees in the Faculty of Natural and Agricultural Sciences: only Natural Sciences.

Friday 19 April

09:30 Diplomas and certificates up to and including honours degrees in the Faculty of Economic and Management Sciences: all diplomas and degrees in the Faculty, except BCom and BComHons.
14:30 Diplomas and certificates up to and including honours degrees in the Faculty of Economic and Management Sciences: only BCom and BComHons.

The Qwaqwa Campus’ graduation ceremony will take place on 8 June 2013. Diplomas/certificates up to and including doctorates will be awarded at this ceremony.

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