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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

Teacher training key to democracy and freedom
2011-12-06

 

MEC Mr Tate Makgoe (left) with Faculty of Education’s Prof. Dennis Francis, holding the inaugural SURLEC Award. With them is Dr Dipane Hlalele.
Photo: Thabo Kessah

Universities have the responsibility to respond to the challenges that the South African education system is faced with.

This is the view of the Free State MEC for Education, Mr Tate Makgoe, during his address at the three-day First Sustainable Rural Learning Ecologies (SURLEC) Colloquium, which was recently held at the Qwaqwa Campus of the University of the Free State (UFS).
 
“Our universities must not only research the failures of our system. They must also come up with solutions.
 
“One of the questions that demand answers in our country is whether we produce quality teachers at our universities, considering our learners’ performance internationally. Our children lack the basics like grammar and yet we are 17 years into democracy. Why is their performance so poor in comparison to children in poorer countries?” asked Mr Makgoe.
 
“We must work together as a Government and universities to change this. Universities must be anchors of democracy and freedom, which is meaningless if our children cannot read and write. We must also focus on Mathematics and Natural Sciences, not forgetting to value our indigenous knowledge and games to enhance learning, especially in Mathematics,” he said.
 
According to Dr Dipane Hlalele, Head of the Faculty of Education at the UFS Qwaqwa Campus, the colloquium was held to search for best practices and success stories relating to the theme, Creating sustainable rural learning ecologies in the 21st century.
 
“Our objective was to tap into experiences and wisdom of policy makers, researchers, scholars, teachers and students in order to map a new direction in research as well as to make an indelible mark on the revitalisation of this campus,” concluded Dr Hlalele.
 
The UFS Dean of Education, Prof. Dennis Francis’ efforts to improve rural education were honoured with the first ever SURLEC Award.
 
Over 70 research papers from the universities of the Free State, South Africa, Venda, KwaZulu-Natal, Limpopo and the Cape Peninsula University of Technology were delivered and learners from the local schools like The Beacon, Mafube, Qwaqwa and Clubview presented their winning projects at the Science Expo.

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