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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

Dialogue between Science and Society series looks at forgiveness and reconciliation
2013-03-24

 

Taking part in the discussion on forgiveness and living reconciliation, were from left: Olga Macingwane, a survivor of the Worcester bombing of 1993; Dr Juliet Rogers, a Scholar on Remorse from the University of Melbourne in Australia and Dr Deon Snyman, Chairperson of the Worcester Hope and Reconciliation Process.
Photo: Mandi Bezuidenhout
24 March 2013

How do you, as a mother who lost her only daughter, forgive the man who claimed responsibility for the attack that killed her?  How do you forget his crime while travelling with him across the world?  

These were some of the questions posed to Jeanette Fourie at a Dialogue between Science and Society series on forgiveness and living reconciliation. Jeanette, whose daughter Lyndi was killed in an attack on the Heidelberg Pub in Cape Town in 1993, was one of three people telling their stories of forgiveness while dealing with traumatic experiences. 

Sitting next to Letlapa Mphahlele, the man who owned up to the attack that killed her daughter, Jeanette spoke about their story of forgiveness traveling the world together, spreading the message of forgiveness and conciliation. 

"Don't ever think you can forget, because that’s not possible. What you do with the pain is to find peace, and that's what forgiveness does. Forgiveness allows you to stop all the dialogue in your head on why he did it. You don't forget, you confront it and you deal with it." 

Letlapa, Director of Operations of Apla, the military wing of the PAC at the time of Lyndi's death, spoke about dealing with the response to his crime. "Sometimes you wish that you were not forgiven, because now you have the great burden of proving that you are worthy of forgiveness."

Also telling her story of forgiveness was Olga Macingwane, a survivor of the Worcester bombing of 1993 in which four people were killed and sixty-seven others injured. Four people were sent to prison. In 2009 Olga met one of the perpetrators, Stefaans Coetzee, and what came out of that meeting, is her story. 

"When I met Stefaans I was very angry, but when you sit down with somebody and listen to him or her, you find out what the reasons were that made him or her do something. I can say that I forgave him." 

Facilitating the conversation, Prof Pumla Gobodo-Madikizela, Senior Research Professor on Trauma, Forgiveness and Reconciliation, said the seminar was meant to get in touch with the truth that forgiveness is possible. 

"Before we had the Truth and Reconciliation Commission (TRC) in South Africa, the experts always said that forgiveness was not possible in these stories of the past. And then the TRC came into life as a response to mass atrocities. For the first time in the history of these traumatic experiences, of political traumas, we witness something that we have never seen.  Even us on the TRC, although it was framed as reconciliation, we never imagined there would actually be stories of forgiveness emerging out of that process, and then we witness that this too is possible." 

Others who took part in the two-hour-long seminar, were Dr Juliet Rogers, a Scholar on Remorse from the University of Melbourne in Australia and Dr Deon Snyman, Chairperson of the Worcester Hope and Reconciliation Process. They spoke about the dynamics behind the processes of engagement between victims/ survivors and perpetrators. 

The Dialogue between Science and Society series was co-hosted by the Institute for Reconciliation and Social Justice. 

 

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