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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

JN Boshoff Memorial Lecture: Dr Charles Nwaila

2005-09-13

Dr Charles Nwaila, Director-General of the Free State Provincial Government and Vice-Chairperson of the University of the Free State's (UFS) Council, recently discussed the repositioning of the Free State Provincial Government to respond to the 21st century demands during the JN Boshoff Memorial Lecture at the UFS.

From left: Dr Nwaila; Prof Tienie Crous, Dean: Faculty of Economic and Management Sciences; Prof Frederick Fourie, Rector and Vice-Chancellor and Dr Moses Sindane, Departmental Chairperson: Department of Public Management at the UFS.

A summary of the lecture.

Free State government to focus on training of public servants

The Free State provincial government in collaboration with higher education institutions in the province is to establish the Free State Association of Public Administration to get public servants to work effectively towards the growth and development of the province.
This was announced by the Director-General of the Free State provincial government, Dr Charles Nwaila, during a lecture he delivered at the University of the Free State (UFS) in Bloemfontein this evening (Thursday 8 September 2005).

Delivering the annual JN Boshoff Memorial Lecture at the UFS, Dr Nwaila called on higher education institutions to play a critical and leading role in the re-engineering of the existing Provincial Training and Development Institute housed at the Vista campus of the University of the Free State in Bloemfontein.

Dr Nwaila was formerly the Superintendent-General (head) of the Free State Department of Education and currently serves as the Deputy Chairperson of the Council of the University of the Free State.
He said the proposed Free State Association of Public Administration is a joint initiative with the National Academy of Public Administration based in Washington DC.

“We take this opportunity to invite the University of the Free State and other knowledge based institutions to join the Provincial Government in fostering a collaborative network to help us develop our public servants,” Dr Nwaila said.
He said there were accelerating demands and a lot of pressure on limited resources, with Free Staters expecting more from their government than ever before.

“Civil servants in a developmental state are servants of the people, champions of the poor and the downtrodden and not self-serving individuals that seek only advancement on the career ladder,” Dr Nwaila said.
According to Dr Nwaila, the Free State Growth and Development Strategy has identified 11 areas that need to be addressed by the year 2014, including:

• To reduce unemployment from 38% to 20%
• To improve the functional literacy rate from 69,2% to 85%
• To stabilize the prevalence rate of HIV and AIDS and reverse the spread of the disease
• To provide a free basic service to all households
• To provide adequate infrastructure for economic growth and development

Dr Nwaila said that the Free State government will continue to follow a people-centred approach towards these development objectives with a keen sense of unity and unwavering determination to create the best of times for the Free State and all its people.

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