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02 January 2025 | Story Gerda-Marie van Rooyen | Photo Supplied
Prof Linus Franke
Leading the research in South Africa is Prof Linus Franke from the Department of Soil, Crop and Climate Sciences.

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

Leah Tutu - from a humble heritage to a matriarch of devotion
2013-10-18

 

Leah Tutu
18 October 2013

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Leah Tutu Symposium: YouTube video

There are treasures in life, but owners are few
Of money and power to buy things brand new
Yet you can be wealthy and feel regal too,
If you will just look for the treasures in you …

The joy and the laughter, the smile that you bring;
The heart unafraid to love and to sing;
The hand always willing to help those in need;
Ones quick to reach out, to labour and feed.

So thank you for sharing these great gifts inside;
The caring, the cheering, the hug when one cried.
Thanks for the energy, encouragement too,
And thank you for sharing the treasures in you. (Author unknown)

With these words, Thandeka Tutu-Gxashe embodied the celebration in honour of her mother, Leah Tutu.

On Thursday 17 October 2013, the Annual Intercontinental Leah Tutu Symposium was launched at the UFS’ Bloemfontein Campus. Dignitaries and students alike flocked to the Centenary Hall where friends and family shared their immense love and respect for Ms Tutu.

Approaching the podium, Eunice Dhadhla (co-founder with Ms Tutu of the Domestic Workers Union) started humming and in an instant the audience had risen to their feet and the words “My mother was a kitchen girl. My father was a garden boy. That’s why I’m a unionist”, reverberated through the hall.

“I am what I am today because of her,” Dhadhla said of Ms Tutu. They have walked a long hard road together to ultimately unite domestic workers across the globe. Stretching her small body to its full length, Dhadhla imparted one of the most valuable lessons she has learned from Ms Tutu, “Stop crawling, stand up and walk for yourself.”

As soon as Dr Sindiwe Magona – acclaimed writer and poet – ascended the stage, her energy rushed across the room with electrifying intensity. Her high regard for Ms Tutu as public icon as well as a mother, wife and friend, was palpable. Belting out line after line of a poem she wrote especially for Ms Tutu, the audience echoed their agreement in a mutual exchange.
No sooner were they seated, than Archbishop Desmond Tutu and Prof Jonathan Jansen had the crowd roaring with laughter. Archbishop Tutu’s familiar chuckle peppered his story of how he came to propose to his wife. It was clear, though, how much he reveres Ms Tutu’s presence in his life. With enormous awe, he revealed her innate power, specifically during difficult times in our country’s past – from weathering death threats against her husband to public humiliation.

But despite adversity and heartache, in front of the Centenary Hall, this matriarch stood up and beamed joy into everyone present.

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