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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

Mpofu-Walsh inspires with music, word, and wisdom
2017-08-22

Description: TEDxUFS   Tags: TEDxUFS

Sizwe Mpofu-Walsh shared with the audience the
creative process of writing a song at the 2017
TEDxUFS conference.
Photo: Voxomnia

“Sometimes it’s the parts of us that give us the most agony, the parts of us that we think we need to change to conform to other people’s expectations, which are actually the gateways which allow us to make an impact in the world.”

This encouragement from Sizwe Mpofu-Walsh was one of the highlights of the 2017 TEDxUFS conference. According to the author, musician, and activist, we should embrace every part of ourselves. We should understand that the way in which each of us can change the world, is by becoming one with all the different parts of us which people think can’t come together.

Audience hears project for first time

For the first time ever, Sizwe shared material from his project Democracy and delusionwith an audience at the 4th annual TEDxUFS conference in the Odeion Theatre at the University of the Free State on 5 August 2017. Other speakers included the likes of Murendeni Mafumo, founder of Gentle Giant, and Elijah Djan, CEO and inventor of Nubrix.

The event also included TEDx videos, breath-taking performances, and cutting-edge technological exhibitions. The theme was Prism of Possibilities.

Launching a book and album together

Sizwe shared how he, while studying at the University of Oxford, embarked on an ambitious project where he combined his passion for academics and music: To release a book and album about the same things at the same time.

The project is a reflection of the political landscape in South Africa. Sizwe showed how he created a song about student protests by putting different layers of music together.

“The only way to do something that will leave you truly remembered is to do something different. It is to take all of yourself and pour it into the creative pursuit that you produce.”

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