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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 changes format of graduation ceremony

2011-04-17

The highest number of qualifications in the history of the University of the Free State (UFS) will be awarded at the autumn diploma and graduation ceremony from 9-11 May 2011, which will be held in the Callie Human Centre on our Main Campus in Bloemfontein.

From this year, the format of the ceremony will change to make it more visible to students and the public. For the first time, all the doctoral and master’s degrees from each respective faculty will be conferred during one ceremony on 11 May 2011, instead of each faculty handling these qualifications individually. Another change in the format is that the procession will gather on the Red Square in front of the Main Building and move to the Callie Human Centre from there. Both academic staff and graduands will partake in the procession.

A total of 3 674 qualifications will be conferred during this year’s graduation ceremony, including 629 diplomas, 2 613 Bachelors and honours degrees, 372 master’s degrees and 58 doctorates.

An honorary doctorate in Drama and Theatre Arts will also be awarded to theatre stalwart Mr Pieter Fourie. He is one of the most acclaimed Afrikaans playwrights in South Africa and probably the only person to have left his mark as an actor, director, artistic director and writer.

Mr Fourie was awarded the Gerhard Beukes prize for drama , was honoured for his contribution to the arts by the South African Academy for Science and Arts and was appointed as trustee of the Arts and Culture Trust of the State President in 1997. He has also served as a committee member of the South African Academy for Science and Arts.

Mr. Fourie has also been the proud recipient of the Hertzog prize for drama, two FNB-Vita awards and a Fleur Du Cap award.

The full programme for the respective ceremonies is as follows:

Monday, 9 May 2011:

At 08:30, certificates and diplomas, excluding PGED and PGES, will be awarded to graduates from the Faculty of Education and at 12:00 PGED, PGED and B and honours degrees will be awarded to students from the same faculty. At 15:30 on the same day, certificates and B and honours degrees will be awarded to students in the Faculty of the Humanities.

At 19:00, the Faculties of Education, the Humanities and Economic and Management Sciences will have their prize-giving ceremonies for outstanding achievers.

Tuesday, 10 May 2011:

At 08:30, students in the Faculty of Economic and Management Sciences will graduate and at and 12:00 the Faculty of Natural and Agricultural Science will join them. This includes students in BML, B.Admin., B.Pub. and related honours degrees. At 15:30, 503 students from the Faculty of Natural and Agricultural Sciences will receive their certificates, diplomas and B and honours degrees.

At 19:00, the Faculties of Health Sciences, Natural and Agriculture Sciences, Law and Theology will have their prize-giving ceremonies.

Wednesday, 11 May 2011:

The Faculty of Health Sciences, the Faculty of Law and the Faculty of Theology will be awarding their certificates, diplomas and B and honours degrees at 08:30. At 12:00, all faculties will award a total of 372 master’s degrees and at 15:30 a total of 58 doctorates will be conferred.

The Chancellor’s Dinner will take place in the Centenary Complex on the Main Campus of the UFS at 19:00.

The graduation ceremony of our Qwaqwa Campus will take place in the Rolihlahla Mandela Hall on the Qwaqwa Campus on 7 May 2011 at 10:00. All the faculties at this campus will confer their degrees, certificates and diplomas at this ceremony.

Media Release
21 April 2011
Issued by: Lacea Loader
Director: Strategic Communication
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: news@ufs.ac.za

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