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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

UFS policies want to help all students
2005-03-09

The death of Hannes van Rensburg, a first-year student from the JBM Hertzog residence, this past weekend, placed various aspects of student life in the spotlight.  Dr Natie Luyt, Dean:  Student Affairs at the University of the Free State (UFS), and the Student Representative Council (SRC) of the UFS explain which policies are in place to counter these practices.

At all tertiary institutions there are rules and policies to guide students and provide direction for certain behaviour and practices.  The same applies to the University of the Free State (UFS).

“At the beginning of the year the UFS provides every residence committee with a manual to establish a framework for meaningful and orderly relations within and among residences on the campus,” said Dr Natie Luyt.

However, it is one thing to set rules, but it is an impossible task to enforce all aspects thereof.  Policies currently in place include an alcohol policy, a policy on the induction of first years and a policy on banned practices in residence orientation. 

“The alcohol policy was compiled in cooperation with students and their input was constantly asked,” said Dr Luyt.  We also liaise on a continuous basis with residences and senior students to encourage the responsible use of alcohol, especially around activities like intervarsities and Rag. 

In the policy, recognition is given to the right and voluntary and informed choice of every individual to use alcohol on the UFS campus in a responsible way. 

Guidelines for the use of alcohol on campus include among others the following: 

Only authorised points of sale will be permitted on campus.  In this case it is the various league halls in most of the male residences on campus.

Alcohol will only be made available during fixed times and is not permitted in residence rooms.    

All alcohol-related functions are regulated and an application for a temporary alcohol license must be obtained from the Dean:  Student Affairs.     

The UFS obtained a liquor license in March 2004 which must be administered by senior leagues in various residences on campus.   Normal liquor license conditions and the county’s liquor laws apply.  Liquor can only be sold to members of the senior league (or special guests) and also to persons over the age of 18 years.  Liquor may not be used in public (outside the senior league) or on campus.    

The senior leagues may only be open three nights per week and within prescribed times.  No liquor could be used in any other place than the senior league halls.  Senior leagues could buy liquor from club monies generated by themselves. 

The right of senior leagues to serve liquor was suspended by the Rector and Vice-Chancellor the UFS, Prof Frederick Fourie, on Monday 7 March 2005 – pending an investigation of the recent events on campus. 

The policy on banned practices include among others that no swearing and shouting at first-years may take place, no first-year student may be targeted individually, no senior may enter the room of a first-year student without an invitation or permission from that first-year student and no senior under the influence of alcohol may have contact with first-year students. 

The induction of first-year students takes place by means of three functions, namely an information function (the introduction to the various facets and possibilities of the university system), an induction function (the first-year student becomes involved in various campus and residence activities) and a development function (the first-year student is motivated to take charge of his development potential). 

No first-year induction activity may commence before the residence committee’s contracting with the senior students is not completed.  This meeting is attended by the residence head and all senior students.  The induction policy, residence induction policy of first-year students and first-year rules are discussed.

The senior students sign an attendance list to show that he/she was informed about the policies.  A senior who does not sign, may not be involved with any induction session with first-year students.  

No physical contact is allowed during the conclusion of the first-year students’ official induction period.  The induction of first-year students as full members of the residence is a prestige event, presented by the residence committee.  No physical or degrading activities may take place. 

The Dean:  Student Affairs also has a daily meeting with the primarii of all the residences during the induction period.  This helps to monitor the situation and counter any problem behaviour or tendencies.

“Enforced behaviour – where a senior student forces a first-year student to do something against his/her own free wil – is not allowed.  Where there is any sign of this, it is met wortel en tak uitgeroei,” said Dr Luyt.

“In any group of people – whether it is a group of students or people at a workplace – there will always be those who will break the rules or those who would like to see how far they could push it.

The SRC, the UFS management and myself are and will stay committed to make each student’s life on this campus a school of learning and an experience which would be remembered for ever,” said Dr Luyt.

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