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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

UFS enhances Geography in schools
2015-05-11

The Green Box

The Department of Geography at the University of the Free State (UFS), in association with the Society of South African Geographers (SSAG), is doing their part in providing curriculum support to schools. Dr Ruth Massey and Anneri Pretorius are the project managers of Green Box, an initiative to advance Geography in schools.

The Green Box supports the intermediate phase of schooling (Grades 4, 5, 6). According to Dr Massey, the worksheets and activities provided in the Green Box are aligned with the Curriculum and Assessment Policy Statements (CAPS) and the new curriculum. “These worksheets are divided into three themes: map work, physical Geography, and human Geography.

“Map work includes symbols and keys, grid references, and compass work whilst physical Geography focuses on water and waste, biodiversity and conservation, and weather and climate issues. The human Geography theme has a focus on population, rural and urban development, migration, food and farming, and transport and trade,” she said.

Each worksheet has a fact sheet section which teaches theory on the specific topic (linked to the curriculum), an activity section (all resources needed for these activities are provided in the box), and a ‘take it home’ section for further learning and practice at home.

The Green Box is a recycled plastic crate that comprises worksheets, training materials, visual aids, and resources for teaching, learning, and active engagement in Geography classes.

Also included in the box are a felt story board and characters (that link with the worksheet activities), the ‘Climate Change memory game’ (which enhances learner’s memory capabilities and teaches various climate change facts) and the ‘Sustainable Development puzzle game’ (which teaches about the social, biophysical, economic, and political elements of Sustainable Development, and how they overlap).

“All items in the box are locally sourced, robust, and without copyright,” said Dr Massey.

The project is focusing on 10 under-resourced schools in the Bloemfontein area. Each school has received three boxes (one for each grade of the Intermediate Phase).

Dr Massey said: “This box is to be shared among the teachers. The Green Boxes were distributed at a training and information workshop held at three central schools in the various districts. These workshops introduced the teachers to the contents of their box, and provided basic training on the worksheets and the activities provided.”

“The schools will be joined up with ‘Box Buddies’ at more resourced schools in Bloemfontein. These buddy schools will assist in support and in replenishing the box’s stationery, etc. when needed.”

“Monitoring and evaluation will take place for six months after the boxes have been distributed. This will ensure support to, and the sustainability of, the project.” The Green Box project was made possible through a grant from the Society of South African Geographers (SSAG).

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