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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

Campus-wide poll to determine preferences among current staff and students for language models

2015-10-20

Language poll postponed until Thursday 22 October 2015

Due to the closing down of all UFS campuses on Wednesday 21 October 2015, the language poll has been postponed until Thursday 22 October 2015.

Invitation to take part in a campus-wide poll to determine preferences among current staff and students for language models.

As mandated by the Council on 5 June 2015, the senior leadership of the University of the Free State (UFS) has committed itself to a formal review process of the current language policy through a comprehensive process of consultation with all university stakeholders.

Since 19 August 2015, the following public sessions have taken place across all three campuses:

Public dialogue for staff and students, Qwaqwa Campus, 19 August 2015
Staff submissions, Bloemfontein Campus, 20 August 2015
External stakeholder submissions, Bloemfontein Campus, 24 August 2015
Public dialogue for staff and students, South Campus, 26 August 2015
Alumni submissions, Bloemfontein Campus, 27 August 2015
Expert panel discussion for staff and students with Q&A, Bloemfontein Campus, 31 August 2015
Staff, students, and external stakeholder submissions, Qwaqwa Campus, 9 September 2015
Panel discussion and public dialogue for students, Bloemfontein Campus, 10 September 2015
Expert panel discussion for staff and students with Q&A, Bloemfontein Campus, 11 September 2015
Student submissions, Bloemfontein Campus, 15 September 2015
Staff and student submissions, South Campus, 16 September 2015
Convocation submissions, Bloemfontein Campus, 30 September 2015

Further, written and online submissions from the entire university community were put forward until 18 September 2015, while the Convocation had until 30 September 2015 to submit. During the process, the Language Committee has met weekly and discussed the viability, benefits and challenges of various language model options, taking into account institutional, regional, national and global concerns, documents and information.

Following the university’s commitment to open, democratic practice, the UFS calls upon all its current staff and students to participate in a campus-wide poll in order to assist the Language Committee in determining possible preferences among current staff and students for language models. The possible models have emerged from the broad consultation process.

Please note that the campus-wide poll is NOT a formal voting process or referendum and will form only one part of many deciding factors that will be referred to the UFS Council on 20 November 2015 for their deliberations regarding the future of the language policy at the UFS. The poll, conducted by the Independent Electoral Commission (IEC), will be indicative of the preferences of staff and students for possible language model options, with specific focus on language of instruction.

The poll will take place at the following venues from 21-28 October 2015, 08:00-16:30, including the weekend:

Bloemfontein Campus: Kestell Residence Gazellie

Qwaqwa Campus: VIP Lounge

South Campus: Conference Hall

To take part in the polling, a valid staff or student card must be produced. Polling will take place on the basis of one poll per current staff member/student.

We look forward to your participation in the poll and hereby thank the entire university community for their ongoing interest and responsible engagement with the review process.

For inquiries send an email to language@ufs.ac.za or call 051 401 3422051 401 3422.

The UFS Language Committee

Click here for the question and answer page.

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