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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 awards centenary bonuses to staff

2004-11-25

The University of the Free State (UFS) will award a special Centenary bonus of R3000 (three thousand rand) to all qualifying staff in December 2004 .

As far as general salary increases for 2005 are concerned, plus an inflation- based linked salary increase adjustment of 1,4 percent and a further 4,6 percent salary increase as a final dividend from the financial turn-around strategy that began in 2000, will be instituted .

The final percentage salary increase is dependent on whether the expected government subsidy, of which the UFS must still receive notification from the Department of Education, is received.
, if the expected government subsidy realizes .
In addition, the salaries of service workers in low remuneration groups, as well as full professors have been adjusted retroactively to 1 January 2004. This restructuring was agreed upon to address market-related backlogs for these two groups , who display the biggest backlog relative to comparable institutions . A similar professional bench-marking exercise for support service staff has not been finalised.

This agreement was signed on Wednesday 24 November 2004 between the UFS Council and the UVPERSU-NEHAWU Joint Forum regarding salary negotiations for 2005.

“With this Centenary bonus and the significant above-inflation salary increase payment the UFS wants to pay recogni se tion to the sterling role that staff

have played in a difficult period of transition and fast growth and the contributions that they made to promote excellence at the UFS to a

university of excellence,” said Prof Frederick Fourie, Rector and Vice-

Chancellor of the UFS.

He said that the extra payment of this final 4,6 percent increase due to benefit from the financial turn-around strategy means that in real terms average salaries at the UFS had increased over the past 3 to 4 years by well over more that the 15 percent target that was set initially.

According to Prof Fourie all staff members who were in the employ of the UFS on UFS conditions of service on 15 November 2004 and who assumed duties before 1 October 2004, will qualify for the bonus. The same criteria will apply as for the 2004 bonuses.

However, there are some exceptions who do not qualify for the bonus eg learning facilitators, professors extraordinary, affiliated lecturers, departmental assistants, laboratory assistants, student help, all staff appointed for less than 20 hours per week, persons who are paid on a claims basis etc.

“Although the UFS’s actual subsidy amount is not yet known, an increase of 6,6 % in the total remuneration costs was budgeted for in the budget serving before the Executive Management and Council. It was further agreed with the UVPERSU-NEHAWU Joint Forum that the first 6 % increase will be used as general pensionable salary adjustment with implementation date 1 January 2005,” said Prof Fourie.

According to Prof Fourie the agreement also applies to all staff members of the Qwaqwa and Vista campuses whose conditions of service are already aligned with those of the main campus.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
25 November 2004

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