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02 January 2025 | Story Gerda-Marie van Rooyen | Photo Supplied
Prof Linus Franke
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.

News Archive

Reclassification of giraffe status pivotal in public action, says UFS researcher
2016-12-08

Description: Reclassification of giraffe status  Tags: Reclassification of giraffe status  

Dr Francois Deacon, specialised researcher
in the Department of Animal, Wildlife, and
Grassland Sciences at the University of the Free State.
Photo: Supplied

Great news for those who care about the conservation of giraffes is today’s (8 December 2016) announcement by the International Union for the Conservation of Nature (IUCN) that giraffes are now classified as ‘Vulnerable’. The species, formerly classified as ‘Least Concern’ on the IUCN Red List — an index on the likelihood of extinction of animals worldwide — is threatened with extinction.

“Until recently, few people were aware of the situation facing giraffes. It is time to show the world giraffe numbers are in danger. This reclassification by the IUCN is pivotal to get the public to stand up and take action for giraffes,” said Dr Francois Deacon, specialised researcher in the Department of Animal, Wildlife, and Grassland Sciences at the University of the Free State (UFS).

Research is essential to develop effective conservation plans for a species

Key to this announcement was the status report submitted by Dr Deacon. He was the lead author responsible for the submission of the Southern African Giraffe subspecies (Giraffa camelopardalis giraffa) status report that was part of the larger species report submitted for review by the (IUCN). The UFS has been doing many research projects in the past couple of years on giraffe-related issues and topics to address this problem.

The UFS is one of only a few universities in Africa that is committed to studying giraffes to ensure the conservation of this species for generations to come.

“The reclassification of giraffes to ‘Vulnerable’
status, by the IUCN, is pivotal to get the public
to stand up and take action for giraffes.”

A 40% decline in the giraffe population over the past two decades is proof that the longnecks are officially in trouble. According to Dr Deacon, this rate of decline is faster than that of the elephant or rhino. The main reasons for the devastating decline are habitat loss, civil unrest and illegal hunting.

Dr Deacon, pioneer in the use of GPS technology to study giraffes and their natural habitat, said “This vulnerability clearly stipulates we are quickly losing grip on our last few natural populations”. He and a team of researchers at the UFS in South Africa are leading various research and conservation projects to help save the last remaining giraffes in Africa.

Giraffes moved from ‘least concern’ to ‘vulnerable’ on the Red List

The IUCN, a health check for our planet, is the highest level at which decision-makers can prove how many species (fauna or flora) are surviving or not. The update from ‘Least Concern’ to ‘Vulnerable’ on the Red List was released at the 13th Conference of the Parties to the Convention on Biological Diversity in Cancun, Mexico.

A wildlife documentary, Last of the Longnecks clearly shows how the number of giraffes has plummeted in the past two decades from 154 000 to fewer than 98 000 today — with numbers of some giraffes, such as Kenya’s reticulated giraffe, declining by as much as 80%.  

Any individual or institution that wants to make a contribution relating to giraffe research can contact Dr Deacon at the UFS on deaconf@ufs.ac.za.

 

In other media:

Announcement on BBC news: http://www.bbc.co.uk/news/science-environment-38240760
Time: http://time.com/3622344/giraffe-extinction/
The Telegraph: http://www.telegraph.co.uk/science/2016/12/08/giraffes-now-facing-extinction-warn-conservationists/
ABC News: http://abcnews.go.com/International/giraffes-danger-extinction-numbers-dropped/story?id=27334959
theguardian: https://www.theguardian.com/environment/2016/dec/08/giraffe-red-list-vulnerable-species-extinction
Aol: http://www.aol.co.uk/news/2016/12/07/giraffes-in-danger-of-extinction-as-population-plunges-by-up-to/  

 

Former articles:

18 November 2016: Studies to reveal correlation between terrain, energy use, and giraffe locomotion
23 August 2016:
Research on locomotion of giraffes valuable for conservation of this species
9 March 2016:
Giraffe research broadcast on National Geographic channel
18 September 2015:
Researchers reach out across continents in giraffe research
29 May 2015:
Researchers international leaders in satellite tracking in the wildlife environment

 



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