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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

Leader of Bafokeng nation delivers a guest lecture at UFS
2011-05-05

 
Kgosi Leruo Molotlegi, leader of the Royal Bafokeng, Proff. Teuns Verschoor, Vice-Rector: Institutional Affairs, Jonathan Jansen, Vice-Chancellor and Rector of our university, and Hendri Kroukamp, Dean of our Faculty Economic and Management Sciences (acting).
Photo: Stephen Collett

Kgosi Leruo Molotlegi, leader of the Royal Bafokeng nation, asked the pertinent questions: Who decides our fate as South Africans? Who owns our future? in the JN Boshoff Memorial Lecture at our university.

He said: “It’s striking that today, with all the additional freedoms and protections available to us, we have lost much of the pioneering spirit of our ancestors. In this era of democracy and capitalist growth (systems based on choice, accountability, and competition), we nevertheless invest government with extraordinary responsibility for our welfare, livelihoods, and even our happiness. We seem to feel that government should not only reconcile and regulate us, but also house us, school us, heal us, employ us, even feed us.

“And what government can’t do, the private sector will. Create more jobs, invest in social development and the environment, bring technical innovations to our society, make us part of the global village. But in forfeiting so much authority over our lives and our society to the public and private sectors, I believe we have given away something essential to our progress as people and a nation: the fundamental responsibility we bear for shaping our future according to aims, objectives, and standards determined by us.”

He shared the turnaround of the education system in the 45 schools in the 23 communities of the Bafokeng nation and the effect of greater community, NGOs, the church and other concerned parties’ engagement in the curricula and activities with the audience. School attendance improved from 80% to 90% in two years and the top learners in the matric maths in Northwest were from the Bafokeng nation. 

Kgosi Leruo Molotlegi stressed the need for people to help to make South Africa a better place: “As a country, we speak often of the need for leadership, the loss of principles, a decline in values. But too few of us are willing to accept the risk, the expense, the liability, and sometimes even the blame, that accompanies attempting to make things better. We are trying to address pressing issues we face as a community, in partnership with government, and with the tools and resources available to us as a traditionally governed community. It goes without saying that we can and should play a role in deciding our fate as members of this great country, and in the Royal Bafokeng Nation, as small as it is, we are determined to own our own future.”

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