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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.
Academic and security arrangements on the Bloemfontein and South Campuses for the coming week
2016-02-28
All academic and administrative services on the Bloemfontein and South Campuses of the University of the Free State (UFS) will resume on Monday 29 February 2016.
The following academic and security arrangements have been put in place:
1. Academic arrangements:
It is important to remember that losing an academic week has major implications for all students, particularly for first-year students, and for purposes of academic planning. The university will therefore resume its normal work on Monday 29 February 2016. Losing any additional time will severely disadvantage students, especially those who desperately need the time to catch up with lectures ahead of the coming tests and examinations. Many more students will struggle to complete the academic year if any further time is lost.
In order to ensure that the academic work of the university is not undermined, the UFS will extend this academic term by one week. This will allow the completion of the work scheduled for last week. Given the impact that disruptions had on the emotions and concentration of many of our students, academics are requested to manage the setting and re-setting of all tests and assignments scheduled for last week with sensitivity, and to be supportive of students as they re-start their academic work. No student should be disadvantaged in terms of tests or assignments as a result of last week’s closure. We know you would do this anyway, but this is a reminder to all staff of what we expect to be a common approach and understanding on the part of lecturers.
We rely on the leadership of the deans in the seven faculties to support staff and students in dealing with the lost time in the most appropriate manner and in supporting all efforts to refocus energies on the academic project.
As the senior leadership and management of the university, we will continue to do everything in our power to make sure that the academic programme continues uninterrupted.
2. Security arrangements:
The Bloemfontein Campus is secure and we have more than doubled the security arrangements, with the interdict firmly in place.
The university management condemns in the strongest possible terms the violence that took place at Xerox Shimla Park on the night of Monday 22 February 2016. It also condemns the disruptions of the university that followed Monday’s event, which resulted in the suspension of academic and administrative activities on the Bloemfontein Campus. In line with the terms of the interdict - and now that we are at full capacity to secure this very large and spread-out campus - the university will act swiftly and firmly if any protests or disruption recur.
The following security arrangements are in place:
2.1 Staff and students must have their staff and student cards with them when entering the campus. Passengers in motor vehicles will have to present their cards to security personnel before access could be granted. Security personnel will check this physically by verifying that each person has a valid staff or student card.
2.2 Buses will not be allowed to enter the campus and passengers will have to be dropped off outside the gates - passengers will enter through the turnstiles with their valid access cards. Anyone without a valid access card will have to go to the Visitors Centre and present positive proof of ID (SA ID, passport or driver’s licence).
2.3 Pedestrians will have to swipe their cards at the turnstiles at the gates. Those without cards will have to enter through the Visitors Centre by presenting positive proof of ID (SA ID, passport or driver’s licence).
2.4 Visitors must report to the Visitors Centre (at Gate 5 in DF Malherbe Drive) and present positive proof of ID (SA ID, passport or driver’s licence).
2.5 Due to anticipated delays, it is advised that people allow some additional time when planning their routes to campus and to also make use of the less busy gates, such as Gate 4 (Furstenburg Road) and Gate 2 (Roosmaryn Residence).
2.6 It is advised that walkways be used, especially at night, and that pedestrians should keep to areas that are well lit.
Security helpline: +27(0)51 401 2911 | +27(0)51 401 2634.