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02 January 2025
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Story Gerda-Marie van Rooyen
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Photo Supplied
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.
SA must appoint competent judges
2009-05-08
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| At the inaugural lecture are, from the left: Prof. Teuns Verschoor, Acting Rector of the UFS, Judge Farlam and Prof. Johan Henning, Dean of the Faculty of Law at the UFS. |
Supreme Court of Appeal Judge Ian Farlam has called on the South African government to appoint and continue to appoint competent, fair and experienced judicial officers to sit in the country’s courts.
He also emphasised the need to have an efficient and highly respected appellate division, which rightly enjoys the confidence of all.
Judge Farlam was speaking at the University of the Free State (UFS) where he delivered his inaugural lecture as Extraordinary Professor in Roman Law, Legal History and Comparative Law in the Faculty of Law.
He said there were important lessons that emanated from the study of legal history in the Free State, particularly including the lesson that there were courageous jurists who spoke up for what they believed to be right, and a legislature who listened and did the right thing when required.
“This is part of our South African heritage which is largely forgotten – even by those whose predecessors were directly responsible for it. It is something which they and the rest of us can remember with pride,” Judge Farlam said.
Addressing the topic, Cox and Constitutionalism: Aspects of Free State Legal History, Judge Farlam used the murder trial of Charles Cox, who was accused of killing his wife and both daughters, to illustrate several key points of legal history.
Cox was eventually found guilty and executed, however, the trial caused a deep rift between the Afrikaans and English speaking communities in the Free State.
Judge Farlam also emphasised that the Free State Constitution embodied the principle of constitutionalism, with the result that the Free State was a state where the Constitution and not the legislature was sovereign. He said it was unfortunate that this valuable principle was eliminated in the Free State after the Boer War and said that it took 94 years before it was reinstated.
Judge Farlam added, “Who knows what suffering and tragedy might not have been avoided if, instead of the Westminster system, which was patently unsuited to South African conditions, we had gone into Union in 1910 with what one can describe as the better Trekker tradition, the tradition of constitutionalism that the wise burghers of the Free State chose in 1854 to take over into their Constitution from what we would call today the constitutional best practice of their time?”
Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za
8 May 2009