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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

UFS centenary reaches a peak

2004-10-04

The University of the Free State’s (UFS) centenary celebrations will reach a peak next week when various functions will be presented on campus.

On Tuesday 12 October 2004 the Centenary Complex, the new prestige entertainment venue of the UFS, will be officially opened. The complex is situated on the terrain of the old Reitz dining hall and will be utilised as reception and socialising area for UFS management, staff and alumni. The DF Malherbe House forms part of this complex.

The festivities will continue the next day ( Wednesday 13 October 2004) with the premiere of a documentary programme – commissioned by the UFS as part of its centenary celebrations - about the life and legacy of King Moshoeshoe, the Basotho leader of the nineteenth century. The documentary will focus on his role in reconciliation, nation-building and bringing about peace in this region. The producer of this insightful work is the well-known journalist Mr Max du Preez. The documentary will be screened on SABC 2 later this year.

On Thursday 14 October 2004 a special honorary doctorate graduation ceremony will take place in front of the UFS’s main building. During this event 12 honorary doctorates will be awarded to a diverse group of outstanding South Africans and international experts.

The honorary doctorates will be awarded to: Me Antjie Krog, Prof Jakes Gerwel, Mr Karel Schoeman, Dr Frederick van Zyl Slabbert, Prof Saleem Badat, Dr Khotso Mokhele, Prof Robert Bringle, Prof Leo Quayle, Prof Jack de Wet, Prof Kerneels Nel (postuum), Prof Boelie Wessels and Prof Jaap Steyn.

This group of honorary doctorates is the last in a total of 18 which will be honored during the UFS centenary year.

The next day, Friday 15 October 2004 , more than 100 centenary medals will be awarded to current staff, former staff and alumni.

Media release
Issued by: Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
5 October 2004

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