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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

“Breakthroughs depend on people believing in their own ideas”

2015-07-23

TED is a renowned international non-profit organisation dedicated to disseminating “ideas worth spreading” in the form compelling talks lasting up to 18 minutes.

Lerothodi Molete’s vision is to witness the youth of Bloemfontein emerge at the forefront of technological, scientific, and entrepreneurial innovations in both South Africa and the global arena.

Molete and Bonginkosi Leeuw are the organisers of TEDxUFS. Their duty is centered on inspiring people to believe in, and express, their ideas. These University of the Free State students have taken it upon themselves to inspire the youth to “push the boundaries of society.”

The second TEDxUFS event to be hosted by the university presents a unique opportunity for students, staff members, and the general public to mingle with influential speakers from across various disciplines.

Details of the event:

Date: Saturday 1 August 2015

Time: 08:00- 18:00

Venue: Albert Wessels Auditorium, Bloemfontein Campus

The keynote speakers include: Mmusi Maimane (Federal Leader: Democratic Alliance), Gareth Cliff (Radio personality: Cliff Central), Pieter Geldenhuys (Futurist), Brian Kally (Director: Arrow Logistics), Jonathan Jansen (Vice-Chancellor and Rector: UFS), Ricardo Peach (Director: Vrystaat Arts Festival, Pamela Nomvete (Former actor and writer), Gil Oved (Founder: Creative Counsel), Pepe Marais (CEO: Joe Public), Angelo Mockie (Senior Officer: Student Affairs and musician), Philippa Tumubweinee (Senior Lecturer in Architecture: UFS), and Melody Mentz (Psychology Senior Professor: UFS).

The reason behind the #AskWhy theme

"Why is a small word but it’s a quick, broad, sharp and abrupt one,” explains Leeuw. “It is the chosen word of the non-conformist, the defiant, and the visionary. It is a confrontational word. It challenges what is thought to be impossible.”

The ability to interrogate reality is what society and economies are built on. The absence of the fear to question encourages the capacity to progress.

Motivating young people to follow their dreams is the reason why the TEDxUFS team is persistent in their endeavours. Molete believes that, in order to change anything, people need to ask why.

Background of the innovation powerhouse called TED(x)

TED is a renowned international non-profit organisation dedicated to disseminating “ideas worth spreading” in the form compelling talks lasting up to 18 minutes.

In 1984, it was introduced as a conference exploring Technology, Entertainment, and Design. Three decades later, TED covers a wide variety of topics of global significance, reflecting the contemporary era in more than 100 languages.

TEDx events are under the TED umbrella. These events are organised independently, and create a platform for deliberating on local matters. The programme assists communities, organisations, and individuals to stimulate critical dialogue.

On 25 July 2014, the UFS hosted its inaugural TEDxUFS conference at the Odeion theatre on the Bloemfontein Campus, where eleven speakers addressed an audience of 150 people on interdisciplinary topics ranging from economics to entrepreneurship, technology, art, design, and theology.

This year, 200 seats will be available for innovative revolutionary individuals in search of inspiration.

Tickets are available at 0619284253 / 079 381 4126. Prices: R80 (Student/scholars) and R350 (Public/staff)

LINKS:

Lerothodi Molete- http://whoswho.co.za/lerothodi-molete-742022

Bonginkosi Leeuw- https://www.ted.com/tedx/events/10499

TEDxUFS- http://kovsielife.ufs.ac.za/templates/archive.aspx?news=276

Mmusi Maimane- http://whoswho.co.za/mmusi-maimane-44612

Garett Cliff- http://www.garethcliff.com/

Pieter Geldenhuys- http://pietergeldenhuys.com/

Brian Kally- https://za.linkedin.com/pub/brian-kally/4b/888/959

Jonathan Jansen- http://www.ufs.ac.za/adhoc-pages/rectorate/prof-(jd)-jonathan-jansen

Ricardo Peach- http://ricardopeach.com/

Pamela Nomvete- http://whoswho.co.za/pamela-nomvete-4789

Gil Ovid- https://za.linkedin.com/pub/gil-oved/3/910/892

Pepe Marais- http://joepublic.co.za/people

Angelo Mockie- https://za.linkedin.com/pub/angelo-mockie/27/56/302

PhilippaTumubweinee- http://natagri.ufs.ac.za/templates/staffmember.aspx?DCode=101&pid=zyNJm7KI%2b1k%3d

Melody Mentz- https://za.linkedin.com/in/melodymentz

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