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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

Kovsie TV Launched
2015-05-06

Victor Ngubeni, Grace Thoabala, Nangamso Dlatu, Aisha Poswa, Lesego Maakamedi, Nothando Hlope, Aldene vd Merwe and Lawrence Siyoko

“We have to change our university before we can change our country.”

 

There is a revolution at hand, and students are requesting new and exciting platforms on which they can voice themselves. Kovsie TV aims to do just that for Kovsie students. 

 

As a student initiative, the steam behind it is SRC Student Development and Environmental Affairs, Victor Ngubeni. He says that it is only right that it be by the students themselves. The launch saw many from the campus community gathered out of curiosity and excitement for the new venture. The evening started out as quite a classy frenzy, which had attendees clearly prepared for the level of broadcasting that the launch would showcase.

 

The initial idea is to increase the number of platforms where students can receive information. The Student Media portfolio, which oversees the functioning of student media platforms, aims to make Kovsie TV as autonomous as possible. As an introductory initiative, it will aid in the sharing and telling of students’ stories.

 

It is important to mention the preparation process that was endured by the many hopefuls who auditioned, hoping to make it as one of the Kovsie TV presenters. For more than three weeks, the panel of judges sieved through the contestants until they had just six rough diamonds. Then, for the first time, the audience met the faces that they would become familiar with from this point.

 

As Ngubeni stressed during his speech, Kovsie TV would not serve as propaganda machine for the SRC, as many might have asked about the relationship that could be expected between the two. The architects of Kovsie TV hope that, as a student initiative, it will inspire a new era in student activism.

 

When asked about the concept behind this new platform, Ngubeni informed us that, “the concept is to have a twenty-minute campus TV show highlighting what goes on around campus so that students know, and so that we can get them participating in campus life activities.”

 

This is a student initiative whose future will depend solely on the students themselves.

 

Presenters:

Nangamso Dlathu – Studio presenter

Grace Thoabala – Studio presenter

Lesego Maakamedi – Social events

Nothando Hlophe – Current affairs

Aldine van der Merwe – Culture events and Vox-Pop

Mbulelo Siyoko – Culture and Vox-Pop

Aisha Phoswa ? Sports

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