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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

Now is the right time to talk, says Njabulo
2015-04-20


Njabulo Mabaso

Studying at a multicultural campus adds a lot of colour and spice towards every student’s experience, and it also offers some necessary challenges.

This belief is held by the Qwaqwa Campus SRC member responsible for RAG, Community Service & Dialogue, Njabulo Mabaso.

“Our multi-culturalism should be our uniting force, especially at this time in our country. What started as a one-person protest against the Cecil Rhodes statue at UCT should be used to broaden our view in relation to challenges that we are still facing as students and as a country. We need to talk more”, said Mabaso, a final-year BEd FET Languages student.

“Now is the right time for us to really talk about issues affecting us as young adults. Matters of collective interest like pregnancy rates, alcohol and substance abuse, sexism, crime, xenophobia, etc. need to be tackled”, added Mabaso, a weightlifting fanatic.

“As the student leadership, we intend working closely with community structures as we come from the very same communities. We must not wait for Mandela Day to do good.”

“My portfolio, together with Arts and Culture and Sports Affairs portfolios, can create that necessary social cohesion that we as students and our communities need so much.”

Mabaso said that all perceived taboos should be dealt with.

“Our programme this year encourages open dialogue. Nothing should still be treated as a ‘no-go area’ if we are to survive the scourge of HIV. We must talk openly, despite the cultural challenges that might restrict us. We must talk about homophobia. We must talk about rape. In fact, how many students – male and female – really understand what rape is? Does culture even recognise the ‘no’ factor associated with rape? It is important that we should not leave it until it is too late. We must not wait until it is his word against hers. We must deal with these matters now. The right time to engage is now”, he added.

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