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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

Kovsie first-years get ready for great things
2011-01-16

Prof. Jonathan Jansen (Vice-Chancellor and Rector of the UFS) with two of the first-year students.
- Photo: Lize-Mare Smit

“One thing I can assure you: here academic work comes first.” This was how Prof. Jonathan Jansen, Vice-Chancellor and Rector of the University of the Free State (UFS), set first-years parents’ minds at ease during the welcoming events of the first-years on the Main Campus the past weekend. 

The welcoming events, which took place over two days, were attended by a total of 7 000 first-years and their parents from across the country. 
 
Prof. Jansen also told the students and their parents that they were at the best place, by sharing his excitement about all the new students who decided to come and study at Kovsies. “You have overcome major obstacles in order to be here today,” he said at the welcoming.
 
With more than 90% new students who comply with admission requirements, this group of students promises to become true leaders of South Africa.
 
Prof. Jansen shared a few plans for the year with the audience. “As in 2010, we shall once again send a group of first-year students to universities later this year, not only in America, but amongst others also to Europe and Asian countries, amongst others, to learn more about different cultures and diversity. We aim to double the number of students who will be selected to 150 this year.” We can also look forward to, amongst others, a brand-new entrance and gymnasium for the Main Campus and four new hostels, two of which will be built on the Qwaqwa Campus.
 
Prof. Jansen emphasised the seriousness with which academic work had to be regarded, by referring to the compulsory class attendance that was implemented last year. “Since the inception of this arrangement in 2010, there was a 30% increase in students’ pass rate,” he said.
 
This year, for the first time, honorary awards were also given to young people who had rendered an exceptional service to the community. Anél Kleingeld, a 10-year-old learner from Trompsburg, and Mpho Phahlo from the UFS’s Unit for Students with Disabilities proudly received these awards. Anél made a remarkable contribution to George’s community when she encouraged learners from her` school to collect and deliver 700 litres of water for this community. Mpho made a point of assisting and motivating persons with disabilities at Kovsies to work hard on a daily basis.
 
 

 

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