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08 October 2020 | Story Leonie Bolleurs | Photo Supplied
Dr Cornel Bender
Dr Cornel Bender received her PhD qualification at the virtual graduation ceremonies in October. The title of her thesis is: Stem rust resistance in South African wheat and triticale.

The rapid distribution of disease-causing organisms such as Ug99, a wheat stem-rust pathotype, pointed out just how vulnerable global cereal production is to disease outbreaks.

These cereals include wheat, barley, rye, oats, triticale, rice, maize, and millet and are one of the most important food sources for human consumption.

According to Dr Cornel Bender, the projected world population of 10 billion in 2057 requires a growth of more than 40% in cereal production. Wheat is grown on more hectares than any other cereal and is one of the most important sources of calories for humans. However, the growth rate of wheat yields has declined from the 1960s to the 1990s. Therefore, it is essential to increase global wheat production.

“With the regular appearance of more aggressive stem rust pathotypes in South Africa, there is a constant need to discover new sources of resistance, understand the genetic base of presently deployed sources in wheat, triticale and barley cultivars, and to manipulate the deployment of resistant sources through a more sustainable approach,” says Dr Bender.

Her PhD thesis, titled: Stem rust resistance in South African wheat and triticale, includes various fundamental aspects for the effective management of stem rust in South Africa.

Dr Bender is a Professional Officer in the Division of Plant Pathology in the Department of Plant Sciences, who received her PhD at the virtual graduation ceremonies in October.

Innovative and cost effective

Her promotors, Prof Zakkie Pretorius, Research Fellow, and Dr Willem Boshoff, Senior Lecturer in the Department of Plant Sciences, believe that she used an innovative approach to develop a cost-effective phenotyping method to select for more durable resistance types in a controlled greenhouse environment.

“In the past, results obtained from field trials used to assess adult plants for stem-rust resistance, were often influenced by abiotic factors, were seasonable in nature, expensive, and time consuming; therefore, the development of a dependable greenhouse screening system provides an important additional instrument for rust research,” says Dr Bender.

She adds that the greenhouse technique is used worldwide to screen for adult plant resistance and contribute to save time and money.

Broadening our knowledge

“Inheritance studies were undertaken to determine the genetic base of stem-rust resistance in selected South African wheat and triticale cultivars (developed from wheat/rye crosses) through seedling analysis as well as greenhouse and fieldwork,” she says.

Dr Bender believes the use and development of different resistance screening methods, the elucidation of host genetics, as well as the use of histological and microscopic methods to study early resistance responses, broaden our knowledge and understanding of stem-rust resistance in South African wheat and triticale cultivars.

Ultimately, rust researchers, grain producers, and also the general public – through access to their daily bread – will benefit from her study.

News Archive

Department Psychology of Education hosts an empowering workshop
2009-11-30

The Department of Psychology of Education at the University of the Free State (UFS), in partnership with the department of Inclusive Education (Xhariep district), recently held a workshop on the Main Campus in Bloemfontein to empower students, educators, departmental officials and parents to address the needs of learners diagnosed with Attention-Deficit-Hyperactivity-Disorder, Autism Spectrum Disorders, as well as learners infected/affected by HIV/AIDS. Keynote speakers at this workshop included Dr Dawid Griessel (Paediatrics, UFS), Dr Annette Prins (Centre for Higher Education Studies and Development, UFS), Ms Santjie Vermaas (Occupational therapist, Motheo District Support Team) and Ms Jane Jarvis (Education Psychologist, specialising in ADHD).

The workshop, under the theme: “Empowering educators to cater for the diverse needs of learners in their classes”, was attended by more than 350. This first initiative has proved so successful that there have been countless requests for a follow-up workshop. At the workshop, from the left, front, were: Ms Santjie Vermaas (Occupational Therapist), Ms Sally York (Learning facilitator: Xhariep District) and Mr T.S. Tsipane (CES: Xhariep District). Back: Prof Johnnie Hay (Departmental Chairperson, Psychology of Education), Dr Dawid Griessel (Department of Paediatrics, UFS), Dr A. Prins (Centre for Higher Education Studies and Development ), Mr P.W. Terblanche (Chief Educational Specialist: Xhariep District), Dr Annalene van Staden (Department of Psychology of Education)
Photo: Mangaliso Radebe

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