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Revolutionising wheat: Developing cultivars that maintain their quality in heat and drought

28 April 2023 | Story Leonie Bolleurs | Photo Supplied

UFS PhD student and food scientist Schae-Lee Olckers’ research could contribute to a stable supply of good quality wheat and bread, even in the face of climate change.

Follow your passion in order to find your purpose. This is the mantra of food scientist and University of the Free State (UFS) PhD student Schae-Lee Olckers, whose research is set to improve wheat quality by identifying which types of wheat are better able to tolerate stress, and which proteins are most important for producing high-quality bread.

“By grasping this, it is possible to ensure that we continue to have a stable supply of good quality wheat and bread, even in the face of climate change,” says Olckers, who believes wheat is one of the most important food grains in the human diet, and one of the most important staple cereal crops in the world.

Her PhD study, ‘The influence of abiotic stress on gluten protein and baking quality in bread wheat’, under the supervision of Dr Angie van Biljon and Prof Maryke Labuschagne in the Department of Plant Sciences, and Prof Garry Osthoff in the Department of Microbiology and Biochemistry, is investigating how different levels of heat and drought stress – mostly due to climate change – affect the gluten protein composition of high-yield bread wheat.

Olckers is a food scientist at StartWell Foods (Pty) Ltd, a non-profit organisation that produces high-quality extrusion products for feeding schemes around the country. The products help to eliminate stunted growth among children.

Improving wheat breeding programmes

This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world. – Schae-Lee Olckers

Her research focuses on examining different types of wheat and investigating how proteins are affected by stressors like heat and drought, to understand how these stressors impact the quality of bread. She uses new proteomic methods to look at the different proteins in the wheat flour, to gain a better appreciation of how gluten proteins react to stress.

In this study Olckers is able to see how the proteins change in the various wheat cultivars, helping us to understand how the different types of wheat perform in baking, and how the proteins affect the final product.

She collaborates with the International Maize and Wheat Improvement Center (CIMMYT) in Mexico, that releases new wheat cultivars for developing countries. Their aim is to develop wheat cultivars that maintain their quality in different environments. To investigate the performance and characteristics of the seeds, both in the field and in the laboratory, CIMMYT did the field trials, quality assessment, and supplied the seeds for high-performance liquid chromatography (HPLC) and proteomics analysis.

Finding ways to adapt to climate change

She believes that understanding how these stressors impact the production of bread-baking quality in wheat will help scientists gain important insights into how climate change affects our food supply.

“Taking into consideration the current and projected intensifying heat and water deficit stresses, it is crucial to improve the understanding of these phenomena in order to implement new breeding strategies for sustainable wheat quality. This research could help us find ways to adapt to climate change and continue to produce high-quality wheat and bread for people around the world,” Olckers says.

News Archive

An incident-free recess for the UFS

2010-07-19

The improved security measures at the University of the Free State (UFS) have resulted in an incident-free recess on the Main Campus in Bloemfontein during the 2010 FIFA World Cup and the annual Volksblad Arts Festival.

The UFS provided accommodation for international spectators visiting the country for the World Cup and recently also hosted the hugely popular Volksblad Arts Festival without any security glitches.

These successes could be attributed to the hard work of staff members from various divisions at the UFS to ensure that the security was improved.

“The main question we had to deal with was: should our Main Campus be fenced off? This matter had been under discussion for quite some time. In order to ensure the feasibility thereof, a second impact study was done by a consulting engineer,” said Prof. Niel Viljoen, Vice-Rector: Operations at the UFS.

“This study has shown that, given the nature of activities on the campus and the access configuration, it would be difficult, if not impossible, to effectively control access to the campus, especially as far as visitors were concerned. Any type of access control measure would result in delays at the gates, which could have a major impact on the traffic flow, delays, costs and emissions.”

“It is important that our staff and students feel safe on the Main Campus, whether they are walking on campus or working in their offices. In that way we can ensure an environment that is conducive to staff and students to work and study,” he said.

Various measures are being implemented to make the campuses safer. These include, among others:

The installation of alarms in buildings on the Main Campus. The project for the South Campus has been completed and the installation of a new alarm system on the Qwaqwa Campus will start soon.
Staff and students will be required to wear identification cards once the new identification system has been put in place. These cards will allow access to all buildings.
Fences around the Main Campus are being repaired and the areas around these fences are being cleaned. This project should be completed by August 2010.
Lights will be installed in badly lit areas on the Main Campus. The first phase of this project includes the area between the Mooimeisiesfontein, Welwitschia and Vergeet-my-nie residences. This project will also be completed by August 2010.
The walkways on the Main Campus will be patrolled more frequently and effectively.
Contracted security workers will be utilised more effectively.
The monitoring of security cameras on the Main Campus on a 24/7 basis. “For this purpose the security room of our Protection Services is in the process of being upgraded,” said Prof. Viljoen.

The possibility of placing security cameras and panic buttons in parking areas and walkways is investigated.

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt@ufs.ac.za
16 July 2010

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