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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

Full week of graduation ceremonies at UFS in April

2015-04-10

Autumn always sees the UFS’s first graduation ceremony of the year on the Bloemfontein Campus.

From 14 – 17 April 2015, graduates will once again be rewarded for their hard work while top speakers will address them in the Callie Human Centre. There will be a ceremony at 09:00 and at 14:30 each day on all four days of the graduation.

The programme for the 2015 April Graduation is as follows:

Tuesday 14 April 2015:

Professor Himla Soodyall will be the speaker at both ceremonies on this day. Prof Soodyall is a Medical Scientist for the South African Institute for Medical Research. She is also a Principal Medical Scientist for the National Health Laboratory Service, and a Director for the Human Genome Diversity and Disease Research Unit at the University of Witwatersrand.

During the first ceremony of the day at 09:00, all diplomas/certificates and B degrees in the Faculty of Natural and Agricultural Sciences will be awarded. Only Honours degrees in the Faculty of Natural and Agricultural Sciences will be awarded at the 14:30 ceremony.

Wednesday 15 April 2015:

Wednesday will see Ndumiso Hadebe take the stage to address graduates at both ceremonies.

At the age of 23, Hadebe is the Founder and Managing Director of Master Frontiers Consulting, a firm that capacitates leaders and managers to achieve business goals through their people. He worked previously as a Researcher at Shanduka Black Umbrellas, a flagship enterprise and supplier development programme of the Shanduka Foundation.

He has been received numerous awards for excellence in leadership, such as the Sedibeng District Municipal Mayor’s Award for Service and Leadership. He is a Brand South Africa Ambassador and Read Educational Trust Ambassador.

All diplomas/certificates, B and Honours degrees in the Faculty of Economic and Management Sciences, except B Com degrees, will be awarded during the morning ceremony at 09:00. Later, at the 14:30 ceremony, only B Com degrees in the Faculty of Economic and Management Sciences will be awarded.

Thursday 16 April 2015:

Multiple award winning South African TV presenter, Leanne Manas, will be the speaker at both Thursday ceremonies.

Manas has graced our screens for over a decade. Not many broadcasters can boast having had live TV experience, 5 days a week for 12 years. She is currently the anchor of SABC 2’s flagship breakfast programme, Morning Live. Leanne is a qualified Speech and Drama teacher. having studied at London Trinity College. She also has an Honours degree in English.
Diplomas/certificates up to and including Honours degrees in the Faculty of the Humanities, Social Sciences, and Communication Sciences will be awarded during the ceremony at 09:00. The 14:30 ceremony will have diplomas/certificates up to and including Honours degrees in the Faculty of the Humanities’ other qualifications except for Social Sciences and Communication Sciences.

Friday 17 April 2015:

Dr Maria Phalime will be the speaker at both ceremonies on Friday.

Phalime is a medical doctor and award-winning author. She practiced for a brief period as a general practitioner in South Africa and the United Kingdom, before leaving medical practice to pursue non-clinical interests. She has worked in trade and investment promotion, and has undertaken research and consulting in the areas of economic development and business facilitation.

Diplomas/certificates up to and including Honours degrees in the Faculty of Education (CE, NPDE and ACE excluded) will be awarded during the ceremony at 09:00. Diplomas/certificates up to and including Honours degrees in the Faculties of Health Sciences, Law, and Theology will be awarded at the 14:30 ceremony.

Click here for the simple layout of the 2015 April Graduation programme:
http://www.ufs.ac.za/adhoc-pages/2014-graduation-ceremony/graduation-ceremony

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