Latest News Archive

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

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

SRC elections: A first for UFS main campus

2005-08-14

Students on the main campus of the of the University of the Free State (UFS) will this week for the first time vote for the Student Representative Council (SRC) using two voting systems: proportional representation (PR) and first-past-the-post.

According to the Vice-Rector, Student Affairs, Dr Ezekiel Moraka, this year’s elections are a milestone for the UFS as it will be the first time that the main campus SRC will be elected according to the amended SRC constitution, which was approved by the UFS Council in June 2005.

“It is also a major breakthrough for student governance and transformation of the UFS main campus and constitutes a legitimate basis for the democratic participation of all students at the UFS main campus in the governance of the university,” said Dr Moraka.

The amended constitution of the main campus SRC determines that nine of the 18 SRC members must be elected by means of proportional representation and nine on the basis of an individual, first-past-the-post election.

According to Dr Moraka, the introduction of the proportional representation system follows earlier calls by some student formations, notably Sasco and the ANC Youth League, for such a system to be introduced at the UFS main campus in Bloemfontein.

The new main campus SRC constitution is the result of consensus reached during a lengthy negotiation process involving diverse student formations such as Sasco, the ANC Youth League, the Young Communist League, the ACDP, HEREXVII, KovsieAlliance, as well as the democratically elected SRC members of the main campus.

“Independent persons such as Mr Jack Klaas and Mr Kobus van Loggerenberg, a former SRC President, facilitated the negotiation process,” said Dr Moraka.

Students on the main campus in Bloemfontein will vote for a new SRC on Monday 15 August 2005.

SRC elections will also take place on the other two campuses of the UFS, which have their own SRC structures.

Students on the UFS-Vista campus in Bloemfontein will vote for a new SRC on Monday 15 August 2005 and Tuesday 16 August 2005.

At the Qwaqwa campus of the UFS, students will vote for a new SRC on Friday 26 August 2005.

The election processes on all three campuses will be closely monitored by independent electoral bodies.

After the three campuses have elected their respective SRCs a central SRC will be constituted. The central SRC will have 12 members made up of delegates of the three campus SRCs, including the presidents of these three SRCs. The main campus will have five representatives, the Qwaqwa campus will have four representatives and the Vista campus will have three representatives.

Main campus voting schedule:
Monday 15 August 2005 from 07:00-21:00. Ten voting stations will be set up across the campus. The results will be announced on Tuesday 16 August 2005.

Vista campus voting schedule:
Monday 15 August 2005 and Tuesday 16 August 2005 from 09:00-18:00 in the administration building. The results will be announced on Wednesday 17 August 2005.

Qwaqwa campus voting schedule:
Friday 26 August 2005 from 09:00-18:00 in the Senate Hall. If there is no objection to the final results, it will be announced on the same day.

Media release

Issued by:  Lacea Loader
   Media Representative
   Tel: (051) 401-2584
   Cell: 083 645 2454
   E-mail: loaderl.stg@mail.uovs.ac.za

14 August 2005

Back

Economic and Management Sciences

Education

Health Sciences

The Humanities

Law

Natural and Agricultural Sciences

Theology and Religion

Open Distance Learning

Business School

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