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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

Alexander Ramm Cello Recital with Pieter Jacobs (piano)

2016-04-15

Description: Ramm Tags: Ramm

Alexander Ramm

“Ramm plays with enormous musical authority. Unlike many young instrumentalists, he is not intimidated by the reflective or the elegiac; nor is he nervous about the length of pauses, or the creation of inter-phrase silence. He has a phenomenal technique and he demonstrated it to full effect in this captivating performance.” (Cape Times)

Alexander Ramm belongs to the new generation of cellists recognised for his appealing artistic creativity and unprecedented technical skills. Alexander started his musical education at the age of seven at the Glier music school (Kaliningrad) with Svetlana Ivanova. Her extremely serious attitude to music studies and pedagogical talent revealed the rare musical capabilities of this young cellist.

After moving to Moscow at the age of ten, he was accepted to the class of Maria Zhuravleva at the Chopin Moscow College of Music Performance. From 2007, he continued his professional education at the Moscow Conservatory in the class of the renowned musician and the People’s Artist of the USSR, Natalia Shakhovskaya, an outstanding performer and pedagogue who taught most prominent Russian cellists. Since 2012, he has become a postgraduate student at the Hanns-Eisler Hochschule fur Musik under the guidance of the famous cellist, Frans Helmerson.

From the age of nine, when he made his debut as a soloist with the Kaliningrad Chamber Orchestra, Alexander brilliantly performs with solo programmes and as a soloist with leading orchestras in Russia and worldwide.

He is prizewinner at several international competitions:
1st prize: 4th Moscow Competition for young cellists (2003)
1st prize: 1st Cambridge International Boston Competition (Massachusetts, 2005)
Grand-Prix: Moscow Festival of Romantic Music (Moscow, 2006)
4th prize: 5th UNISA International String Competition (South Africa, 2010)
1st prize: 3rd Beijing International Music Competition (Beijing 2010)
1st prize: 1st All-Russia Music Competition (Russia, 2010)
Prizewinner: Janigro Cello Competition (Croatia, 2012)
Prizewinners: Swedish Duo Competition with duo partner Anna Odintsova (2012)
3rd prize: Paulo Cello Competition (2013) – becoming the first Russian prizewinner in the history of this prestigious contest
2nd prize: XV International Tchaikovsky Competition (2015)

Alexander participated in masterclass festivals at Courchevel Academy and Holland Music Sessions, where he took lessons from the famous musicians such as F. Muller, R. Latzko, M. Kliegel and U. Wiesel. In 2011, he took part in the well-known Verbier festival, where he studied with H. Hoffmann, F. Helmerson, M. Suzuki, L. Power and F. Radosh. At the end of the festival, he was awarded the Neva Foundation top-level prize for gifted students.

Alexander cooperates with such outstanding conductors as V. Gergiev, V. Spivakov, A. Levin, K. Orbelyan, V. Polyansky, S. Kochanovsky, M. Fedotov, A. Slutsky, A. Sladkovsky.

He will be accompanied by Pieter Jacobs, a graduate of the University of Pretoria, who then furthered his studies at Yale in the United States, where he pursued his performing career with considerable success as a soloist and chamber musician in Boston, Cambridge and New Haven before returning to South Africa to perform and teach at the University of Pretoria. Pieter is regarded as one of SA’s foremost pianists and chamber musicians.

Programme:
Grieg: Cello Sonata, Op. 36 in A minor (1883)
Barber: Cello Sonata, Op. 6 in C minor (1932)
Prokofiev: Cello Sonata, Op. 119 (1949)
Piazzolla: Le Grand Tango for cello and piano

Date: 22 April 2016
Time: 19:30
Venue: Odeion
Costs: R130 (adults), R90 (pensioners), R70 (UFS staff members), R50 (students and learners), R50 (group booking of 10+). Tickets available at Computicket.

More information: Ninette Pretorius +27(0)51 401 2504.

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