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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

Colloquium focuses on rural education

2012-10-10

Some of the international delegates during the second annual colloquium on rural education recently held at the Qwaqwa Campus.
10 October 2012

The second edition of the Sustainable Rural Learning Ecologies (SuRLEc) Colloquium was held at the University of the Free State's Qwaqwa Campus this week. This three-day international event provided the Faculty of Education's postgraduate students with a platform to present their research and to learn from experienced researchers from all over the world.

In his opening address, the Faculty's Programme Head, Dr Dipane Hlalele, challenged all delegates to translate their research into achievable goals to address all the challenges facing rural education.

"Excellence in teaching and learning in a rural context remains a challenge for all sectors and levels of the education endeavour," Dr Hlalele said.

"Urban and metropolitan schools, colleges and universities may unintentionally structure their learning programmes in such a manner that they neglect rural attributes. This results in the marginalising of learners and students from rural environments. To complete the loop, these institutions are more likely to fail in preparing graduates for decisive contributions to sustainable rural learning ecologies," Dr Hlalele added.

The colloquium was officially opened by the Vice-Rector: External Relations, Dr Choice Makhetha, who highlighted the fact that the UFS was already doing its bit in levelling the learning playfields in higher education.

"We are aware that many of our students who come from disadvantaged backgrounds find it hard to cope at university. As a result, we are not waiting for them to come through to us. We are already in partnership with a number of schools where we help learners to improve their results," Dr Makhetha said.

The crucial role played by rural teachers was celebrated during a gala dinner to honour and acknowledge their efforts despite a myriad of daily challenges.

Ms Jabulile Mabaso (The Mills Primary Farm School) was honoured for 'Excellence in multi-grade teaching in Foundation and Intermediate phases'. Ms Rekha Mathew (Sibonakaliso Primary Farm School) and Mr Andries Motsoere (Tshebedisano Primary Farm School) were awarded for 'Excellence in managing multi-grade curriculum'.

The 2012 SuRLEc Honorary Award went to Ms Motshedisi Damane for her valuable contribution to the development of rural education in the Thabo Mofutsanyana Education District. Last year's recipient was the Dean of the Faculty of Education, Professor Dennis Francis.

Delegates and keynote speakers came from Thailand, Malaysia, the Unites States of America as well as the SADC countries of Botswana, Zimbabwe and Lesotho. South Africa was represented by the Universities of the North-West, Limpopo, KwaZulu-Natal and CUT, amongst others.

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