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25 March 2022 | Story Leonie Bolleurs | Photo Charl Devenish
Prof Liezel Herselman Inuagural Lecture
At the inaugural lecture were from the left: Prof Danie Vermeulen, Dean of the Faculty of Natural and Agricultural Sciences, Prof Liezel Herselman, Dr Adré Minnaar-Ontong, Senior Lecturer in the Department of Plant Sciences and Subject Head of Plant Breeding, and Dr Molapo Qhobela, Vice-Rector: Institutional Change, Strategic Partnerships and Societal Impact.

Prof Liezel Herselman, Academic Head of the Department of Plant Sciences at the University of the Free State (UFS),) delivered her inaugural lecture on the Bloemfontein Campus this week (24 March 2022). The theme of the lecture was the ongoing battle against destructive cereal killers. 

With 28 years of extensive experience as a researcher, her work focuses on marker-assisted disease resistance breeding in wheat within a South African context. When she joined the UFS in 2004, Prof Herselman decided to apply her research expertise in marker-assisted breeding to the problems faced by wheat producers in the Free State and Northern Cape. The Free State is one of the major dryland wheat production areas in South Africa, while irrigation wheat is produced along the major rivers in the Northern Cape. 

Protection against fungal diseases

Concentrating specifically on Fusarium head blight (or wheat scab) and three rust diseases – leaf rust, stem rust, and stripe rust – she has done work to provide wheat plants with ‘tools’ to protect themselves against these fungal diseases.

According to Prof Herselman, there are many genes available in different wheat genotypes and related grass species that provide excellent protection against various races of these diseases. “Some of these genes provide protection or resistance from the seedling stage, while others provide resistance at the adult plant stage. We are thus aiming to combine as many of these genes as possible into a single wheat cultivar, without compromising yield and bread-making quality.”

She says the genes are combined by making crosses between resistant and susceptible cultivars or lines. Conventionally, through a time-consuming process, the incorporation of these genes is tested in the greenhouse and field by infecting plants with the disease to see which plants are resistant and which are not.

They can, however, follow the transfer of these genes to newly developed lines by applying molecular markers. Prof Herselman explains: “A molecular marker is a genomic fragment linked to the gene, which we can follow in the offspring we create from the crosses using different DNA techniques in the laboratory. This enables us to select new wheat lines that contain the highest number of resistance genes. The identified best lines are then used in further crosses and/or released as pre-breeding lines to commercial wheat breeding companies.”

Impact on food security

Her research has an impact on society by providing food security to both commercial and small-scale producers, as well as the end users of wheat (people buying bread and other wheat products). As researcher, it is also important for her to send out students to the workplace who can continue with this task in future.

Prof Herselman believes that when cultivars with fungal-disease tolerance or resistance are released and used by producers, it not only reduces the cost of spraying against diseases, but also increases yields by protecting the crop against fungal diseases. “We live in a world where the population is increasing daily, but land available for agriculture is not increasing and some areas are even lost due to urban development. Increasing yield in available production areas will thus have a positive impact on food security,” she says.

Besides contributing to the country’s food security, she takes pleasure in every aspect of her work. Although she misses the hands-on part of the work as academic head of the department and getting her hands dirty, she still enjoys managing the different research projects (from the conceptualisation phase to data analysis and publishing of results). The part she loves the most is to see the growth in her postgraduate students – from the moment they enter the laboratory for the first time until the day they walk out of the laboratory with their degrees. 

“It adds purpose to my life knowing that I have made a difference in a student’s life and equipped him or her with the necessary tools to be successful in the marketplace. Being able to share your knowledge is a gift, but with that gift comes a lot of responsibility as well. I am, however, up for the challenge,” concludes Prof Herselman. 

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Kovsie Netball team aims for first home final on Monday 12 October 2015
2015-10-09

Kovsies Netball has been unbeaten this year.

The University of the Free State (UFS) netball team  is hoping to continue its good performance in the Varsity Sport series against the North-West University on Monday 12 October 2015 at 19:00, in order to reach the finals for a third consecutive year.

The teams will meet in the Callie Human Centre on the Bloemfontein Campus for a follow-up of last year’s semi-final. Kovsies won that that game in Bloemfontein with a score of 51-45.

If the home team prevails, they will be hosting a final for the first time.

The Kovsies, who were unbeaten this year, and finished at the top of the log, were the champions in the first two seasons, but had to play away from home in the final against Pukke in 2013 and Tuks in 2014.

The last league match they lost against Pukke was in 2013. The score in Pretoria was 47-60 in favour of the Pukke.

Many of the clashes between the teams have been very close games. Last year, there was a 45-45 draw in Potchefstroom.

In the first round of 2015 between Kovsies and Pukke in Bloemfontein, the UFS won by 47-38.

In their final league match in Stellenbosch on Monday 5 October 2015, Kovsies won against Maties by 41-33, while the Pukke, who ended fourth on the log, defeated the Madibaz 65-32 in Potchefstroom.

In the other semi-final on Monday, Tukkies and Maties, second and third respectively on the log, will play against each other in Pretoria. This match will be broadcast live on a big screen in the Callie Human Centre on Monday.

The Kovsie captain, Karla Mostert, who will be playing for Bath in England next year, is currently ahead on votes for Player of the Series. Last year, she was also Player of the Series. Fans may vote for her on the Varsity Sport Facebook page at https://www.facebook.com/varsitysportsSA.

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