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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 Open Day a resounding success
2010-05-05

 
 Photo: Gerhard Louw


The Kovsie Open Day 2010 that took place on the Main Campus of the University of the Free State (UFS) in Bloemfontein last week, was attended by more than 6 000 prospective students and their parents. This event was a resounding success. Thus report our prospective students, their parents, campus personnel, as well Prof. Jonathan Jansen, Rector and Vice-Chancellor at the UFS.

Parents and learners from across South Africa were firstly welcomed by Prof. Jansen, the Deans and Moses Masitha, the President of the Student Representative Council (SRC) in the Callie Human Centre. Thereafter they were afforded the opportunity to visit the various exhibitions in the faculties and residences. Parents and learners could also complete application forms for entrance to the UFS in the tent of the Division Corporate Relations on the Red Square. Liesl Cronje from Magaliesburg, who wants to come and study B.Sc.Agric. at Kovsies, was named as the winner of R3 000 by Corporate Relations after her application form had been selected in a lucky draw.

Residences and student organisations also had information points on the grass in front of the Main Building, where more information was given out to prospective students. Armentum, Vishuis and Karee won the first, second and third place respectively with their information points. The ladies’ residences Vergeet-my-nie, Emily Hobhouse and Soetdoring respectively boasted with the best information points.

The first official Kovsie slogan competition was also held and Madelief was appointed as the winner.

This day was held to provide prospective students and their parents with the opportunity to become better acquainted with the distinctive quality that the UFS offers its students. Staff and students also provided learners with the necessary information to enable them to make the right decisions regarding their career and studies next year.
 

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