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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 honours many during Autumn Diploma and Graduation Ceremony

2006-04-06

The University of the Free State (UFS) will award 857 diplomas and 2 579 degrees on 21 April 2006 and from 24-26 April 2006 during this year’s autumn diploma and graduation ceremony. Students from the Main Campus and Vista Campus will take part in the ceremony.

Altogether 35 doctorates and two honorary doctorates will be awarded. The honorary doctorandi are Mr Pieter Cox (Ph D (hc)) and Mr Terry Moss (Ph D (hc)). Mr Cox is the non-executive chairperson of Sasol Limited and Mr Moss is General Manager: Generation Business Enhancement at Eskom.

On 21 April 2006 at 08:30 altogether 347 diplomas in all the faculties (except the upgrading programmes in the School of Education) will be awarded. On the same day at 14:30 altogether 361 degrees in the Faculty of Economic and Management Sciences (excluding B Acc, B Admin, B Pub and related honours, master’s and doctor’s degrees) will be awarded.

On 24 April 2006 at 08:30 altogether 510 diplomas will be awarded in the School of Education (ACE, NPDE and CE). That same day at 14:30 altogether 314 degrees, one doctorate and one honorary doctorate will be awarded in the Faculty of Economic and Management Sciences (i.e. B Acc, B Admin, B Pub and related honours, master’s and doctor’s degrees). The honorary doctorate will be awarded to Mr Pieter Cox during this ceremony.

Mr Cox will be honoured for being the driving force behind Sasol’s global expansion and the subsequent listing of Sasol on the New York Stock Exchange. His passion and focus ensure that Sasol as a national asset is constantly making history, despite the sometimes hostile economic and environmental influences.

On 25 April at 08:30 altogether 325 degrees and 9 doctorates will be awarded in the faculties of Health Sciences, Law and Theology. That same day at 14:30 altogether 554 degrees, 13 doctorates and one honorary doctorate will be awarded in the Faculty of Natural and Agricultural Sciences. The honorary doctorate will be awarded to Mr Terry Moss during this ceremony.

Mr Moss is regarded as a modern-day South African industrialist. He will be honoured for his dedication to the provision of sustainable renewable energy to the citizens of South Africa and Southern Africa through the development and promotion of the hydroelectric power industry and other sources of renewable electrical energy.

On 26 April at 08:30 altogether 427 degrees and 5 doctorates will be awarded in the Faculty of the Humanities and that same afternoon at 14:30 altogether 598 degrees and 7 doctorates will be awarded in the School of Education.

Both the diploma and degree ceremonies will be held in the Callie Human Centre on the Main Campus in Bloemfontein.

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 April 2006

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