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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

UFS Postgraduate student council’s community project a success
2016-03-03

Description: UFS Postgraduate council’s community project a success Tags: UFS Postgraduate council’s

Prof Jansen Vice-Chancellor and Rector, Dr Henriette van den Berg, Director of Postgraduate School, and Mr Gustav Wilson, Regional Head: Development and Care, Free State and Northern Cape Region.

The University of the Free State’s Postgraduate Student Council embarked on a courageous community engagement project for Mandela Day in 2015. The programme was aimed at assisting offenders at Tswelopele Correctional Centre pass their matric exams, thus granting them access to tertiary education.

The Postgraduate Student Council assisted the 2015 matriculants with study support, and motivated them during their final examinations in 2015. The council will play a bigger role this year by offering offenders at Tswelopele career advice and career guidance for when they leave the correctional facility, as well as study techniques to assist them throughout the year, to ensure a 100% pass mark in 2016.

Offenders who had participated in the Postgraduate Student Council project attended the Postgraduate School’s Open Day on 19 February.  Of the 12 offenders, 11 passed their matric exams, while one is currently busy with his supplementary exams. Tswelopele has a 92% pass rate; it is the best performing correctional centre in South Africa.

The Tswelopele Correctional Centre also serves as a full-time high school (Grade 10-12), and TVET College, assisting offenders to register for tertiary education through various universities.

Prof Jonathan Jansen, Vice-Chancellor and Rector of the University of the Free State, said that he was immensely proud of the matriculants from Tswelopele Correctional Centre. He added that it is vital for every human being to receive a second chance. “Rehabilitation programmes are meant to give offenders a second chance at life, because we cannot give up on humanity. Correctional centres and rehabilitation centres are a societal responsibility. Society must not give up on offenders, everyone deserves a second chance, and we cannot give up on humanity.”

“To our offenders going through rehabilitation and all our young people who are our hope for the future of our beloved country, be encouraged. Dream again. Discover the wonder in your lives,” said Mr Gustav Wilson, Regional Head: Development and Care, Free State and Northern Cape Region.

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