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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. 

News Archive

Ivory Coast too dependent on UN to combat violence against women
2015-10-08

During the seminar presented by the Centre for
African Studies (CAS) at the University of the Free State
were, from the left: Thesipo Machabaphala, student in
Gender Studies; Prof Heidi Hudson, Head of CAS;
Dr Peace Medie from the University of Ghana,
guest speaker; and Sesi Mahlobogoane, student in
Gender Studies.

The Ivory Coast is still too dependent on the work of the United Nations (UN) to combat violence against women in the country. There is much talk about ways to address the problem, but the government is still not acting quickly and effectively enough to make a difference in the long term.

These were some of the findings by Dr Peace Medie from the University of Ghana, guest speaker during a seminar series held by the Centre for Africa Studies (CAS) on the Bloemfontein Campus of the University of the Free State on 1 October 2015.

Dr Medie presented a seminar for students in the Gender Studies programme entitled Women, Security, and Justice: a Study of the Ivorian State’s Response to Violence against Women. Prof Heidi Hudson, Head of CAS in the Faculty of the Humanities at the UFS, facilitated the seminar.

For the sake of internationalisation, the CAS often presents guest speakers from outside South Africa to address its students. In addition , Dr Medie is from Africa.

According to Dr Medie, who conducted some 150 interviews during her research over two years, there was a shortage of resources in the Ivory Coast. This is also the case in several other African countries previously involved in war.

She believes the Ivory Coast should do more to combat violence against women successfully.

She said the UN had a great influence on the way people, especially the police, were thinking about the problem - which included sexual violence against women.

“The UN will not be there forever,” Dr Medie said.

“If response depended only on the influence of an international organisation, what would happen when the UN leaves?”

According to Dr Medie, a shortage of active women’s organisations also had a role to play. She was of the opinion that these organisations should put more pressure on the government to ensure better treatment for women.

“Local organisations are needed because it is not sustainable to depend only on the work of the UN.”


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