Latest News Archive
Please select Category, Year, and then Month to display items
02 January 2025
|
Story Gerda-Marie van Rooyen
|
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.
Teacher professionalism and status under Commonwealth radar
2010-03-26
 |
From the left are: Ms Simone De Cormarmond, Chairperson: Commonwealth Foundation; Prof. Jonathan Jansen, Rector and Vice-Chancellor, University of the Free State (UFS); Mr Samuel Isaacs, CEO: SAQA; and Dr Carol Anne Spreen, Lecturer at the University of Maryland, USA).
Photo: Ian van Straaten |
International delegates attending the 5th Annual Commonwealth Teacher Research Symposium held at the University of the Free State (UFS) in Bloemfontein this week unanimously agreed that more research still had to be done on issues of recognition, registration and standards affecting teachers and teaching across Commonwealth countries.
This two-day gathering of researchers, officials and representatives of regional international organisations and higher education institutions agreed that issues of teacher migration, the professionalism of teachers, teacher preparation and the use of teaching standards, as well as the comparability and recognition of teacher qualifications should be further researched.
The delegates agreed on the following based on the research and data that were presented and shared with all the participants:
Teacher migration is recognised as an increasing global phenomenon that requires ongoing research in the Commonwealth.
Recognising that inequalities and differences within and across Commonwealth countries exist, and considering that fair and ethical treatment in the international recruitment of teachers is an important cornerstone of the Commonwealth Teacher Recruitment Protocol.
Teacher training, the recognition of teacher qualifications, the professional registration of teachers and the development of professional teacher standards should be actively encouraged through ongoing pan-Commonwealth research.
An increased acknowledgement of the role of the professionalisation of teachers through an improved understanding of teacher qualifications and standards.
There should be a specific research focus on teacher preparation and the use of teaching standards.
An increased comparability and recognition of teacher qualifications across Commonwealth countries should be actively encouraged.
Advocacy of teachers’ rights, effective protection of the vulnerable teacher, and appropriate strategies should be promoted to uplift the status of teachers and teaching as a profession.
The Commonwealth Teacher Recruitment Protocol, amongst other things, aims to balance the rights of teachers to migrate internationally against the need to protect the integrity of national education systems, and to prevent the exploitation of the scarce human resources of poor countries.
Delivering his keynote address at the symposium, the Rector and Vice-Chancellor of the UFS, Prof. Jonathan Jansen, decried the quality of professional qualifications in South Africa.
“We have become very good at manufacturing outcomes. We actually have become very good at giving an impression of having achieved particular outcomes without having achieved them at all,” he said.
“So what does it mean to talk about outcomes in an unequal country with unequal resources? What does it mean to talk about qualifications when we do not trust the outcomes?”
He suggested that the teaching profession should be subjected to a peer review mechanism and that the practice of setting minimum standards should be dealt away with because it results in minimum outcomes.
Dr Carol Anne Spreen, lecturer at the University of Maryland in the USA, proposed that countries should improve the quality of their own teachers instead of importing teachers from other countries.
The research symposium was organised by the Commonwealth Secretariat and hosted by the South African Qualifications Authority (SAQA) and the UFS.
Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
26 March 2010