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02 January 2025
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Story Gerda-Marie van Rooyen
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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.
Prof Tim Murithi calls for Africa to design new global order
2016-06-02
From left: Prof Heidi Hudson, Head of Centre for Africa
Studies (CAS); Prof Tim Murithi, Extraordinary Professor
at CAS; Prof Lucius Botes, Dean of the Faculty of
the Humanities; and Prof Prakash Naidoo, Principal of
Qwaqwa Campus.
Photo: Stephen Collet
“What do Africans have to say about the remaking of the global order?” was the opening question of Prof Tim Murithi’s lecture which was hosted by the Centre for Africa Studies (CAS) of the University of the Free State (UFS) to celebrate Africa Day on 25 May 2016.
The annual Africa Day Memorial Lecture, entitled: Africa and the Remaking of the Global Order, doubled as Prof Murithi’s inaugural lecture. He is CAS’s newly-appointed Extraordinary Professor, as well as the Head of the Justice and Reconciliation in Africa Programme at the Institute for Justice and Reconciliation in Cape Town. He made a compelling argument for the need for Africa to exert an active influence on international narratives of peace, governance, justice, and reconciliation.
“If we are waiting for American leadership to get us out of the quagmire of a situation we are in, we will be waiting for a long time,” said Prof Murithi.
The Head of the Centre, Prof Heidi Hudson, concurred with Prof Murithi’s suggestion of devising African solutions for African problems. She quoted Audre Lorde’s well-known assertion that “The master’s tools will never dismantle the master’s house.”
Remembering 1963
Over five decades ago, on 25 May 1963, the Organisation of African Unity was formed, and was renamed the African Union in 2002. Africa Day marks this pivotal point in the continent’s history. On this day, we reflect on the continent’s journey into democracy, peace, stability and socio-economic development. It is also an opportunity to celebrate African identity and heritage.
Continent-building dialogues
The UFS Sasol Library celebrated Africa Day with a book launch. Facets of Power. Politics, Profits and People in the Making of Zimbabwe's Blood Diamonds by Tinashe Nyamunda is a reflection of some of the challenges that Zimbabwe continues to face. It details the disadvantaged position which the country finds itself in due to greed, maladministration, and corruption, despite possessing large deposits of minerals.
In celebration of Africa Month, CAS has held a series of lectures by esteemed scholars from across the globe. Earlier in the month, Prof Henning Melber presented lectures on Namibia’s independence and the African middle class. Kevin Bloom and Richard Poplak unpacked the issues surrounding Africa’s continental shift, while Prof Joleen Steyn Kotze focused on the possible fall of the African National Congress.