Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
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

"Studies indicate disability, poverty and inaccessibility to healthcare are intricately linked " - expert opinion by Dr Magteld Smith
2014-12-03

Dr Magteld Smith

Programmes worldwide attempt to improve the lives of people with disabilities, but recent studies indicated that disability and poverty, as well as disability and the inaccessibility of health care, continues to go hand in hand.

In South Africa, and even in developed countries, research shows that people with disabilities achieve lower levels of education with higher unemployment rates, live in extreme poverty and have low living standards.

“To have a disability can therefore become a huge financial burden on either the disabled person, the family or caregivers,” says Dr Magteld Smith from the Department of Otorhinolaryngology.

She devotes her research to the medical-social model of the global organisation, the International Classification of Functioning, Disabilities and Health, focusing on all areas of deafness.

Furthermore, Dr Smith says it is more difficult or more expensive for people with disabilities to obtain insurance, because of the risks associated with disability.

Dr Smith also emphasises the inaccessibility and even unavailability of medical services or health care for people with disabilities.

“Services such as psychiatry or social services are often not accessible. When such services are available, it is not affordable for most people with disabilities.”

Dr Smith uses the example of a person who was born deaf:

“Doctors have limited knowledge of the different types of hearing impairments or how to read and interpret an audiogram. Very little understanding also exists for the impact of deafness on the person’s daily life.”

Dr Smith, who is deaf herself, describes the emotional state of mind of people with disabilities as a daily process of adjustment and self-evaluation.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept