Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
06 December 2018 | Story Leonie Bolleurs | Photo Barend Nagel
Marcelle Vermeulen
Marcele Vermeulen, a graduate from the Department of Plant Sciences, explores possible threats to crop production; contributing to food security in South Africa.

Global food security is currently threatened both by climate change and the low diversity of crops relied on by humankind to feed a growing world population. Marcele Vermeulen, a graduate in the Department of Plant Sciences who will receive her PhD at the December graduation ceremonies at the University of the Free State (UFS), is part of a team that is working hard to add to the diversity of staple foods in South Africa.

In the drive to focus on alternative crops, Marcele is researching the crop, Amaranthus cruentus, (grain amaranth). It is more tolerant to environmental stress for large-scale production, thereby also diversifying staple crops.

Relatively new development

“Amaranthus cruentus is an excellent candidate due to its high nutritional value and tolerance to drought and high temperatures. It can be mixed with conventional maize meal, to increase the protein intake of its consumers,” said Marcele.

The production of A. cruentus as a grain crop in South Africa is a relatively new development.

In her research, exploring the possible threats to crop production and paying particular attention to dominant plant pathogens in the Amaranthus cruentus, Marcele found a correlation between fungal pathogens and insect pests. 

Insect pests can influence plant diseases

Although reports on fungal pathogens and pests specific to A. cruentus are limited to and information for South Africa is limited to this study, there is a possibility that by controlling insect pests such as weevils, one might also be able to control fungal pathogens of Amaranthus cruentus.

Marcele believes that control of weevil pests should thus be the focus of future pest and pathogen management strategies and breeding programmes in A. cruentus.  

“Knowledge gained in my thesis will hopefully aid in the development of future cultivation practices, integrated pest/pathogen management programmes, as well as for the registration of crop protection products for A. cruentus,” Marcele added.

Research Contributes to Food Security from University of the Free State on Vimeo.

News Archive

Prof Johan Spies learns about much more than genetics in Argentina
2014-04-23


People who attended the course enjoyed Argentina and its traditions very much.

Prof Johan Spies from the Department of Genetics visited Argentina, where he and Dr Carlos Acuna (Universidad Nacional del Nordeste, Corrientes, Argentina) presented a course for doctoral students and staff of Cerzos-Conicet Bahia Blanca (something like the equivalent of South Africa’s NRF) and Universidad Nacional del Sur, Bahia Blanca. Prof Spies presented chromosomal evolution and its effect on fertility, while Dr Acuna took care of apomixis.

Bahia Blanca is a city with a population of almost the same as that of Bloemfontein. The city lies at the mouth of the Naposta River, which almost forms a delta where it flows into the sea. Bahia Blanca (white bay) derives its name from the salt deposits that lends a white colour to the beaches.

The people are very friendly and one soon learns to extend a long arm in greeting. Otherwise you are stuck with an ‘Ola’ while men and women alike will grab even a complete stranger to plant a kiss on your cheek. For people who places great value on personal space, this friendly gesture is not always as welcome!

Barbeque is a choice dish and is usually in the form of beef rib. “It was great (especially if you shut your eyes and ignore the scrumptious fat and future heart attacks)! With the rib they usually had blood sausage and very tasty pork sausage on the grid. Everywhere people are sipping, through a silver straw, their ‘mate’ (pronounce maty), a type of tea made from the leaves and stems of Yerba paraguariensis. It is generally drunk from a special calabash ‘cup’ through a silver straw, which also serves as sift to keep the leaves from your mouth. The calabash is usually passed from one person to another, with each person taking a sip from the brew!  It is even passed around in class!  Another thing in conflict with the upbringing I received from my mother (as is the cup at communion)!,” says Prof Spies.

“My short visit also taught me that the Argentinians are a proud nation that often faced adversity in the past. Nevertheless, they do not try to change their past. Street names even refer to dates from their past when, for example, they were attacked by England (in 1807). Only the almost 30 000 people who disappeared under the military regime, are rarely talked about!,” says Prof Spies.

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