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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

Splendid Summer Graduation concludes 2014 ceremonies
2014-12-11

  • Photo Gallery Afternoon session;  Morning session
  • YouTube

On Thursday 11 December 2014, the university awarded a total of 392 qualifications during our Summer Graduation Ceremony in the Callie Human Centre on the Bloemfontein Campus. Of these, 225 were awarded to graduates from the Faculty of Health Sciences, while 134 master’s degrees and 33 PhDs were awarded in the other six faculties. Another 74 diplomas and 56 certificates were also awarded in the School for Open Learning.

Well-known radio personality, Redi Thlabi, and acclaimed cardiothoracic surgeon, Dr Susan Vosloo, encouraged and inspired the graduates during the two ceremonies on the day.

During the morning session, Thlabi imparted some of the valuable lessons she learned in her personal life as well as in her career. She encouraged graduates to change the script of our country for future generations, to be mindful of others and to find meaning in whatever you do.

“Those who have a platform, a voice and an education have the power to help others further on their journey,” Thlabi said. “I believe we are living in an exciting time – a time to leave a legacy behind, a time to make a mark in this world.”

Graduates from the Faculty of Health Sciences and the School for Open Learning were addressed by Dr Vosloo during the second ceremony.

Dr Vosloo often referred to the success of transformation at our university and added that few successes are achieved without adversity. She encouraged the afternoon’s graduates to become professionals with a high sense of dignity, accountability and transparency in their workplace.

“Remember that you and you alone are able to decide what your approach will be in anything in life from here on forward,” she said.

Dr Vosloo, a Kovsie alumnus, graduated in 1980. Shortly after this, she became the first female heart surgeon in South Africa. She is currently in independent private practice at Christiaan Barnard Memorial Hospital, having also worked from 1998 untill 2012 at the Vincent Pallotti Hospital in Cape Town.

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