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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

How are children taught about sexuality?
2014-01-05

 

Prof Dennis Francis
How is sexuality taught at schools? More importantly, why is heteronormativity taught at schools?

These are the questions that drive Prof Dennis Francis, Dean of the Faculty of Eduation, in his research on sexuality education.

His extensive research papers point out how schools promote compulsory heterosexuality and that homosexuality is something to be hidden and kept separate from teaching, learning and daily school life.

Prof Francis’ research dates back to the early 2000s, when he became concerned about the high HIV prevalence and other sexually transmitted diseases among 15-25-year-olds and the dropping age of sexual debut, as well as the increase of sexually active teenagers that are not adequately protecting themselves against undesired pregnancies and disease.

It was in the light of this that he started looking at how messages of sex and sexuality were conveyed to adolescents before becoming sexually active.

From 2006 to 2008, he was awarded a Medical Research Council Grant under the MRC research priority area of HIV/Aids.

In the past three years, he has collaborated with Dr Renee de Palma, a leading international European scholar who has published widely on sexuality education, gender and heteronormativity.

Using a National Research Foundation (NRF) grant, they collected data from 25 sexuality educators across the Free State on the teaching of sexuality education. They have published three articles in peer-reviewed journals, one is in press, one book chapter was published and two are currently under review.

Prof Francis says he is also pursuing a research project in the teaching of lesbian, gay, bisexual and transgender education in the sexuality education curriculum.

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