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Plant breeding enhances crop improvement

15 September 2020 | Story Leonie Bolleurs | Photo Supplied

Dr van Biljon — Dr Angeline van Biljon was elected as a member of the Southern African Plant Breeders’ Association (SAPBA) executive committee.

Ever wondered how seedless fruit such as lemons, watermelons, and grapes came to be?

Dr Angeline van Biljon, Senior Lecturer in the Department of Plant Sciences at the University of the Free State (UFS), was recently elected as a member of the Southern African Plant Breeders’ Association (SAPBA) executive committee where she will serve until March 2022.

She says it is a privilege to be a member of the team. “It is an opportunity to bring plant breeding to the community so that more people can know about the subject. For example, that seedless lemons, grapes, and watermelons does not just happen; that orange sweet potatoes with high beta-carotene are bred to combat vitamin A deficiency; and that wheat quality is important to make a good loaf of bread.”

This position also brings with it the possibility for her students to work closely with people in industry. “Other members of the committee are breeders in seed and breeding companies,” explains Dr Van Biljon.

Contributing on other platforms

She was nominated and elected for this position during the SAPBA conference that was held at the Future Africa campus in Pretoria. Besides serving on the executive committee of SAPBA, she is involved with and are serving on several other platforms where she is making a difference in the plant breeding industry.

Dr Van Biljon collaborates on wheat quality with researchers in the wheat industry at the Agricultural Research Council (ARC), Small Grain in Bethlehem. “I’m also a committee member of the Cereal Science and Technology – Southern African Association.”

For the past two years, she has been giving online lectures on biofortification as part of a National Research Foundation/Swedish Foundation for International Cooperation in Research and Higher Education (STINT/NRF) group in Alnarp in Sweden. However, she states a working visit to the Nanjing Agricultural University in Nanjing, China as one of her biggest highlights.

Today, I want to help students see the difference plant breeding can make in crop improvement and food security.

The difference plant breeding can make

Although genetics was one of her passions as student, she later found herself as a flower breeder at the ARC Roodeplaat. Years later, she returned to the UFS to complete her PhD in Plant Breeding. And today, she wants to help students see the difference plant breeding can make in crop improvement and food security.

Currently, Dr Van Biljon is focusing on her research, which is the study of the nutritional value of various crops by determining, among others, the beta-carotene values of butternuts, the starch quality of wheat, and the tryptophan value of quality protein maize. “I also look at the influence of abiotic stress on the crop quality and nutritional value of various crops,” she adds.

News Archive

Harvard couple to present lectures on Biostatistics and Mathematics at the UFS

2015-12-07

Professor Donald Rubin

Prof Donald Rubin (John L. Loeb Professor of Statistics at Harvard University) and Elizabeth Zell (MStat - mathematical statistician in the Division of Bacterial Diseases) will visit the University of the Free State (UFS) where they will present lectures on their respective work.

Over his prestigious academic career, Prof Don Rubin’s 400 publications and 13 books have earned him around 180 000 citations at an h-index of 113. He is one of the most cited statisticians/mathematicians/economists/psychologists in the world over the last 10 -15 years. He has supervised 35 PhD candidates as sole-supervisor, 17 more as co-supervisor, with a further eight in the pipeline.

Prof Rubin who will meet with UFS academics in the Department of Mathematics and Actuarial Sciences will also deliver a lecture: Rerandomisation to improve covariate balance in experiments.

Randomised experiments are the “gold standard” for estimating causal effects, yet in practice, chance imbalances often exist in covariate distributions between treatment groups. If covariate data are available before units are exposed to treatments, these chance imbalances can be mitigated by first checking covariate balance before the physical experiment takes place. Provided a precise definition of imbalance has been specified in advance, unbalanced randomisations can be discarded, followed by a rerandomisation. This process can continue until a randomisation yielding balance according to the definition is achieved. By improving covariate balance, rerandomisation provides more precise and trustworthy estimates of treatment effects.

Prof Rubin received an honorary professorship from the Faculty of Natural and Agricultural Sciences at the UFS.

Elizabeth Zell

The lecture will take place on:
Date: Tuesday 8 December 2015
Time: 16:00
Venue: Albert Wessels Auditorium, Bloemfontein Campus

Zell earned her Master’s degree in Statistics at North Carolina State University, and for more than two decades, was an active bio-statistical researcher in various offices of the Centers for Disease Control (CDC). Since 2013, she has been the Principal Statistician and President of Stat-Epi Associates, Inc. Her 150+ publications have earned her 14 500 citations at an h-index of over 50. She is a Fellow of the American Statistical Association, and, in 2010, she received the Statistics Section Government Award for outstanding contributions to statistics and public health by the American Public Health Association. During her career at the CDC, she earned more than 20 CDC research awards and honours.

She will deliver two lectures at the UFS. The first is entitled A Potential Outcomes Approach to Documenting the Public Health Impact of the Introduction of PCV13 for the Prevention of Invasive Pneumococcal Disease. The topic of her second lecture is: Assessing the Effectiveness of Intrapartum Antibiotic Prophylaxis for Prevention of Early-Onset Group B Streptococcus Disease through Propensity Score Design

Elizabeth’s lectures will take place on:
Date: Wednesday 9 December 2015
Time: 10:45 and 13:00
Venue: West Block 111, Bloemfontein Campus

For more information, please contact Dr Michael von Maltitz at VMaltitzMJ@ufs.ac.za.

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