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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

Increase in external research funding is proof of confidence in UFS
2014-12-09

The university’s sourcing of research funding from external organisations has received a significant boost this year. The growth in financing received from the National Research Foundation (NRF) alone increased from R24 million in 2013 to over R50 million in 2014.

“Because tertiary institutions can no longer survive on state subsidies alone, they are increasingly looking at alternative ways of supplementing their income. Income from these sources is utilised for various programmes and projects, with strong emphasis on research,” says Dr Glen Taylor, Senior Director: Research Development at the University of the Free State (UFS).

A source which provided considerable income for the UFS was the presentation of short learning programmes. The growth in income for the learning programmes this year was more than 30% compared to the income in 2012. “Income from short learning programmes is used to support the core business of the UFS,” says Dr Taylor.

A number of major research contracts were entered into during the course of the year. The UFS, for example, serves as an agency for a research contract of USD$10.5 million awarded by the World Bank to the Southern African Development Corporation (SADC). The contract is managed by the Institute for Groundwater Studies (IGS) and involves research on the management and formation of policies on underground water sources across boundaries.

Another substantial grant is the financing received from the Water Research Commission. The money is used to conduct research on the sustainable utilisation of water, as well as ways for the better utilisation thereof for the development of communities. The grant to the UFS for successful projects amounts to R5.5 million on average per year.

The UFS also has contracts with national and international partners. We conduct research of more than R30 million on the behalf of several mining companies, such as Anglo American, BHP Billiton, Exxaro and Goldfields Ltd. “Furthermore, we also have research funding from the National Institute of Health (NIH) in the USA, the European Union and several bilateral research agreements with countries such as Brazil, China and India, as well as contracts with Sasol and the Agricultural Research Council (ARC),” says Dr Taylor.

“We have tremendous interest from several companies wishing to finance the programmes, projects and intellectual property of the UFS, which is proof that our research is recognised and makes a difference,” he says.

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