1. Indigenous Knowledge Systems Centre, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, North West Province, South Africa
2. Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, North West Province, South Africa
3. School of Life Sciences, University of KwaZulu-Natal Pietermaritzburg, Scottsville, South Africa
4. Department of Horticulture, Faculty of Applied Sciences, Durban University of Technology, Durban, South Africa