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The holy grail of potatoes

02 January 2025 | Story Gerda-Marie van Rooyen | Photo Supplied

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.

News Archive

UFS appoints first black woman director

2006-05-03

The Executive Management of the University of the Free State’s (UFS) has approved the appointment of Mrs Refiloe Seane as Director of Kovsie Student Counselling, and Dr Francois Strydom as Director of Student Development.

Ms Seane is the first black woman director to be appointed at the UFS and has been acting in this position since last year.

“Mrs Seane’s appointment is the latest in a series of appointments of women in management positions at the UFS. It signifies our commitment to create a diverse and dynamic institution of higher learning,” said Prof Frederick Fourie, Rector and Vice-Chancellor of the UFS.

Other appointments of women in management positions include that of Prof Magda Fourie as Vice-Rector: Academic Planning; Prof Letticia Moja as Dean: Faculty of Health Sciences; Dr Choice Makhetha as Vice-Dean: Student Affairs and Prof Engela Pretorius as Vice-Dean: Humanities.

Mrs Seane joined the UFS in 1997 as counselling psychologist at Kovsie Counselling. In 2003 she was promoted to senior psychologist. She holds a master’s degree in Counselling Psychology at the UFS.

“The need for students to receive counselling is steadily on the increase. I contribute this to the increasing challenges facing young people of today. Some of the issues we deal with include among others personal adjustment to the university environment, learning and study skills, career guidance and developmental and psychological problems,” said Mrs Seane.

“I commit myself to develop students and prepare them for their studies and careers ahead. My aim is to improve the efficiency of counselling services at the UFS. This will help produce balanced graduates who will become role players both nationally and internationally,” said Mrs Seane.

Dr Francois Strydom has been appointed as Head/Director for Kovsie Student Development. Before his appointment Dr Strydom was senior lecturer at the University of the Witwatersrand’s (WITS) School of Human and Community Development. He holds a Ph D in Psychology from Oxford University, after having obtained a BA degree, BA Honours and master’s degrees in Psychology at the UFS.

“This appointment signals the elevation of the function of student development to directorate level for the first time. It reflects the commitment of the University to support students and their academic development in order to improve their academic success rates. The increase of success rates of especially black students from disadvantaged school backgrounds is a key element of the transformation process of the UFS,” said Prof Fourie.

Media Release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
2 May 2006

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