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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

Autumn graduation a huge success
2012-04-04

 

Proud academics celebrate their child's achievement.
Salomé Naudé received her B.Med.Sc-degree. Her parents are Prof. Jacobus Naudé and Prof. Cynthia Miller-Naudé. (Senior Professors from the Department of Classical and Near Eastern Studies.
Photo: Leonie Bolleurs
2 April 2012


The University of the Free State (UFS) hosted its autumn graduation ceremony on the Bloemfontein Campus last week where the most diplomas, certificates and degrees were awarded at eight different ceremonies in the Callie Human Centre.
A total of 629 diplomas and certificates and 2856 degrees were awarded from Tuesday 27 March 2012 to Friday 30 March 2012.

“Use your degree to improve the lives of people. Do justice,” Prof. Jonathan Jansen, UFS Vice-Chancellor and Rector, encouraged the graduates.

“People know it as a university that chooses restoration over revenge and forgiveness over vengeance.”
Mr. Roland Rudd, a Kovsie alumnus, told students that their blood, sweat and tears had paid off.

Mr. Rudd is a former education student who recently was named the Best Secondary Teacher in the Western Cape.
A highlight of the autumn graduation was when Natalie Jordaan received a standing ovation during the ceremony for the Faculty of Economic and Management Sciences. She is the first Deaf student in the history of the university to receive her degree. Natalie’s first language is Sign Language.
Marina Viljoen, a recipient of one of the university’s 12 Dean’s Medals, also received nine awards at the Faculty of Law’s prize giving ceremony. She was awarded the degree LL.B. (summa cum laude).
Johané Nienkemper (B.Sc. Hons.) received the Senate’s Medal and Prize as the best honours student at the UFS, as well as the Dean’s Medal as the best honours student in the Faculty of Natural and Agricultural Sciences.

Potella Sibongile, a Xhosa imbongi (praise singer) and UFS student received his degree in B.Com.Financial Administration. Potella delivered a praise poem to the graduates before they received their degrees, saying they “will now receive a new birth certificate”.

Master’s degrees and doctorates will be conferred at the Bloemfontein Campus on Thursday 14 June 2012.

The graduation ceremony of the Qwaqwa Campus will take place on 12 May 2012. Diplomas/certificates, degrees and doctorates will be awarded during the ceremony.
 

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