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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.
Science school of excellence for Grade 11 learners launched
2009-04-21
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At the launch of the Science School of Excellence were, from the left: Prof. Neil Heideman, Vice-Dean: Faculty of Natural and Agricultural Sciences at the UFS, Mr John Davids, General Manager, Volksblad, Ms Lorraine Botha, Chief Professional Officer, Centre for Education Development at the UFS, and Rev Kiepie Jaftha, Chief Director: Community Service at the UFS.
Photo: Dalene Harris |
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Science school of excellence for Grade 11 learners launched
The Faculty of Natural and Agricultural Sciences at the University of the Free State (UFS) has launched a project to give top Grade 11 learners an idea of what the faculty has to offer by giving them a ‘university-type’ experience.
The Science School of Excellence Project was launched last week during a function where the university’s schools support programmes were introduced to the management and members of staff.
The project is aimed at Grade 11 learners in the Free State who obtained an overall average of 80% in the 2008 Grade 10 final examinations. This includes a minimum score of 80% (Level 7) in Mathematics and a minimum score of 80% (Level 7) in Physical or Life Science during the same examination. It will be presented on the Main Campus in Bloemfontein from 6-9 July 2009. The closing date for applications is 8 May 2009.
“By presenting this project we want to stimulate learners’ interest in the natural and agricultural sciences, give them an idea of what we have to offer, raise their interest to come and study at the UFS and let them know that we cherish them as role models in their schools and as academic leaders of the future,” said Prof. Neil Heideman, Vice-Dean of the Faculty of Natural and Agricultural Sciences at the UFS.
According to Prof. Heideman the Science School of Excellence will take on the form of small lab and field projects which the learners will carry out under the supervision of staff and postgraduate students. An application fee of R50 per learner must be paid by the school and a maximum of 80 learners can be accommodated. The 80 learners will be selected on a first come, first served basis and a registration fee of R200 per learner has to be paid after they have received notice that they have been accepted. Letters in this regard have been sent to principals of secondary schools in the Free State. “We will also include 10 learners from disadvantaged rural schools, who will be fully sponsored,” said Prof. Heideman.
“Fourteen of our departments will be presenting programmes, during which learners will engage in challenging exercises that will be ‘out of school’ experiences involving laboratory experiments and research activities typical of our faculty,” said Prof. Heideman.
Five other schools support programmes of the UFS were also presented during last week’s launch function. They were the Itjhoriseng Project, which is a skills development course in Mathematics and Physical Sciences for teachers in the Further Education phase; the Science for the Future Project that aims to encourage more learners to enter into science-related studies and careers; the Qwaqwa School Support Programme that aims to improve the year-end results of Grade 12 learners and a project by the South African Foundation for Economic and Financial Education (SAFEFE) and the National Council of Economic Education (NCEE),which aims to improve the economic and financial literacy of teachers.
“The university’s role in the development of teachers and learners in various subject fields has increased tremendously over the past couple of years. Learners are our students of the future. As a university we must do as much as we can to equip them and their teachers with the necessary skills to better themselves,” said Rev. Kiepie Jaftha, Chief Director: Community Service at the UFS at the launch of the Science Schools for Excellence Project.
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
20 April 2009
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