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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

Max du Preez on South Africa’s leadership vacuum
2011-08-29

 

Present at the CR Swart Memorial Lecture was, from the left: Prof. Hussein Solomon, senior Professor in our Department of Political Science; Prof. Theo Neethling, Head of our Department of Political Science; Max du Preez and Prof. Lucius Botes,Dean of our Faculty of Humanities.
Photo: Stephen Collett

“Much has been going wrong in South Africa in the last few years and it’s all due to a lack of strong, visionary leadership. South Africans deserve better and should demand more integrity, courage and vision from the present political leadership,” veteran journalist and author Max du Preez told the audience at a packed Wynand Mouton Theatre at our university, on 25 August 2011.

Delivering this year’s CR Swart Memorial Lecture on the topic “Of Jacob, Julius, Jimmy and the Dancing Monkey”, Du Preez told the audience to look with much more critical eyes at the political leadership and decide who is doing the obvious, following his or her basest instincts or simply trying to play to the gallery. “Why look at a man like Julius Malema and let him upset us, why listen to Floyd Shivambu with his crude manners and let them define us?” Du Preez asked the more than 300 people attending the memorial lecture. The CR Swart Memorial Lecture, the 41st hosted by the UFS, attracted one of the largest crowds ever for a public lecture, with some people sitting on the steps inside the auditorium of the Wynand theatre.
 
Telling the story of African philospher Morena Mohlomi, who acted as a teacher to Basuto king Moshoeshoe, Du Preez told the audience that the country needs counter-intuitive leadership like the two leaders had demonstrated. Calling Mohlomi southern Africa’s first Pan Africanist, Du Preez said the extroadinary thing about Morena Mohlomi and his student was their gift of counter-intuitive leadership, leadership that was daring and visionary, leadership that did not simply do the obvious. Pointing out other visionary leaders like Nelson Mandela, Oliver Tambo, Walter Sisulu, Beyers Naude and Van Zyl Slabbert, Du Preez urged the audience to question “the quality of leadership of Cosatu, the Democratic Teachers Union that is messing up our education, the Communist Party, the Democratic Alliance, the Freedom Front Plus and Solidarity. If they don’t live up to our expectations, why do we still tolerate them?” Du Preez asked.
 
Du Preez also commended Prof. Jonathan Jansen, Vice Chancellor and Rector of the UFS, for his counter-intuitive leadership regarding the Reitz Residence incident and said Prof. Jansen’s solution, as controversial as it was, brought a much better outcome.
 
Please find attached the full speech of Max Du Preez.

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