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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

#Women’sMonth: Men should help change narrative on violence against women – Prof Solomon

2017-08-23

The panellists at a discussion on Issues
Affecting Women at the UFS Sasol library were
Zane Thela, Head of the Gender and Sexual
Equity Office Programme, Pumla Mgobhozi, founding
member of Embrace a Sister, and
Prof Prof Hussein Solomon, Senior Professor in the
Department of Political Studies.
From the left, are: Thela, Mgobhozi, Prof Solomon,
and Betsy Eister, Director: Library and
Information Services.
Photo: Jóhann Thormählen

The fight to eradicate violence against women is one which men should be involved in. According to Prof Hussein Solomon, Senior Professor in the Department of Political Studies at the University of the Free State (UFS), men have to help change the narrative of physical abuse and sexual violence which they perpetrate against women and children.
“Let them (men who might be offended by the #men are trash) reject violent masculinities, and in the process let them redefine what being a man is about. Let fathers teach their sons that no means no.”

Panel discussion on Issues Affecting Women
Prof Solomon was part of a panel discussion on Issues Affecting Women, organised by the UFS library, in collaboration with the Gender and Sexual Equity Office and Embrace a Sister, as part of Women’s Month in the UFS Sasol library on 3 August 2017.
The other panellists were Zane Thela, Head of the Gender and Sexual Equity Office Programme at the UFS, and Pumla Mgobhozi, founding member of Embrace a Sister. Prof Solomon’s book Understanding Boko Haram, focusing on the kidnapping of 200 young women in Nigeria was also launched.

Don’t accept things as they are
Prof Solomon says that responses by the SA government have no credibility and a lot more could be done. “What is clear is that outrage alone will not end this violence.”
Even at SA universities there are many examples of how women are mistreated. “We need to ask: What more can we do as a university to assist these (female) students.”

According to Thela, it is sad that these issues are only talked about seasonally (like during Women’s Month).
Thela says people should raise their children differently in order to change the narrative. “Then men won’t think they have to prove themselves to women.”
And we shouldn’t accept things as they are: “The most dangerous statement in society is to say: ‘It has always been done this way."

Role of women in their fate
Mgobhozi emphasised that women have a hand in the way they are being seen and treated in society. She therefore asked: “What is the role of women in making sure that we dismantle patriarchy”.
According to her women, especially black women, should dismantle the status quo. She added that cultures and parents often influence the way women are seen.
“Women should fight these social problems together,” Mgobhozi says.

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