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Plant Sciences graduate contributes technique to manage stem rust

08 October 2020 | Story Leonie Bolleurs | Photo Supplied

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

Faculty of Law establishes unique panel of advisors

2005-11-11

Photo: Stephen Collett

Some of the panel members who attended the Collegium Iurisprudentium of the Faculty of Law at the UFS were from the left His Honorable Judge of Appeal Lex Mpati (Vice-President of the Supreme Court of Appeal), His Honorable Judge of Appeal Joos Hefer (former Chief Justice of South Africa), His Honorable Judge of Appeal Frits Brand (Supreme Court of Appeal) and Mrs Alet Ellis (lecturer at the UFS Faculty of Law).

At the back from left were Prof Johan Henning (Dean: Faculty of Law at the UFS), His Honorable Judge Faan Hancke (High Court of the Free State and chairperson of the UFS Council) and Adv Jannie Lubbe Sc.

The Faculty of Law at the University of the Free State (UFS) has established a panel of advisors comprising of all the honorary and extraordinary professors of the faculty.

“The faculty has been known for its excellent practice-orientated training as well as the involvement of law practitioners in the training of LL B-students,” said Prof Johan Henning, Dean of the Faculty of Law at the UFS.

“The faculty was greatly dependent on the services of advocate lecturers, full-time members of the Bar and Side Bar who lectured on a part-time basis at the faculty. For this reason lecturing in the faculty was mainly done after-hours to part-time students,” said Prof Henning.

With the shift in emphasis to full-time lecturing and the appointment of full-time lecturers, especially because of the increasing student numbers, the full-time LL B-programme and the increasing pressure on students for quality research inputs, a greater need for meaningful contributions of judges and senior law practitioners to the faculty was experienced.

“To comply with this urgent need, three honorary professors and nine extraordinary professors were appointed. This group of experts deliver an indispensable contribution to the practice orientation of the faculty by means of formal lectures, public inaugural lectures and guest lectures, direct lectures to graduate and post-graduate students, participation in research projects and the constant evaluation of lecturers, modules and the content of modules and learning material. The international exposure of students and lecturers is also promoted by their contribution,” said Prof Henning.
“A need to have the involvement of this special class of professors structured in a more organised way was identified and a decision was made to establish an advisory panel called Collegium Iurisprudentium. It is a privilege to us that all the honorary and extraordinary professors accepted the invitation,” said Prof Henning.

The panel will provide the faculty with continuous, distinguished, practice- orientated capability and capacity as well as international expertise, not only for direct inputs to students but also to advise lecturers about the curriculum, the compilation of the content of the LL B and M module, learning material and others, as well as to strengthen the research capacity of the faculty.

“The panel will also deliver a decisive contribution to the faculty’s preparation for the constitutional audit of the Higher Education Quality Committee (HEQC) of the Council for Higher Education (CHE) that will take place in October 2006,” said Prof Henning.

The Collegium Iurisprudentium, which has been formally constituted, comprises of:

Appeal Court Judge J J F Hefer,
Appeal Court Judge L Mpati
Appeal Court Judge F D J Brand
Appeal Court Judge I G Farlam
Prof B A K Rider
Judge S P B Hancke
Judge A Kruger
Judge D H van Zyl
Adv S J Naudé
Adv J Lubbe Sc
Prof M M Katz
Prof R J Cook
Mr S van de Merwe
Mr W van der Westhuizen
Mr D C M Gihwala

Media release
Issued by:Lacea Loader
Media Representative
Tel: (051) 401-2584
Cell: 083 645 2454
E-mail: loaderl.stg@mail.uovs.ac.za
11 November 2005

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