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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 study finds initiation does not build character
2015-06-24

Photo: Canva.com

Initiation at schools and school hostels does not build character or loyalty. On the contrary, it is a violation of human dignity and the rights of children.

This is the opinion of researchers from the University of the Free State’s Faculty of Education after an exploratory study of initiation practices in schools.

Although the use of initiation in schools and school hostels is forbidden by the Regulations to Prohibit Initiation Practices in Schools, the study found that this practice is still widely evident in schools. The study also found that, in some cases, teachers and/or principals take part.

In the study, led by Dr Kevin Teise from the Faculty of Education, it was found that physical deeds and even violence and emotional degradation were inflicted under the guise of ‘initiation’.

The study was discussed recently during a panel discussion between the Faculty of Education, the Faculty of Law, and the Institute for Reconciliation and Social Justice.

The ‘initiation activities’ that take place during school hours ranged from carrying senior learners’ bags or doing other favours for them, handing over their food or food money, doing senior learners’ homework, and looking down when they speak to senior learners.

In school hostels, it was found that learners were expected to do humiliating things, and were also subjected to physical demands and even violence. Learners pointed out that they were smeared and beaten, their heads pushed into toilets, they had to bath or shower in cold water, they had to eat strange things, and they were prevented from sleeping.

Dr Teise says initiation practices are a general phenomenon in the schools and school hostels that took part in the investigation. Newcomers were subjected to silly and innocent practices, but also to physically and emotionally degrading, and even dangerous ones, before and after school, and during breaks and sports- and cultural gatherings.

“The study’s findings give every indication that the constitutional principles on which the policy document, Regulations to Prohibit Initiation Practices in Schools, is modelled, are not being put into practice and respected at these schools. Policy documents and school rules are pointless if learners, old pupils, parents, teachers, and the broad community consider initiation an acceptable behaviour that is, ostensibly, an inseparable part of school or hostel tradition and of the maturation and/or team-building processes.”

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