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Evaluation of genetic gain and diversity in CIMMYT Southern Africa hybrids and open pollinated varieties tested in regional trials from 2000 to 2010
(University of the Free State, 2014-06)
English: Maize is a staple food crop in ESA, making it a priority in terms of production. Farmers face
challenges in production when maize crops fail in the face of drought, limited or no access to
fertiliser or lack of ...
Rootstock-scion genotype and environment interaction in a South African citrus breeding programme
(University of the Free State, 2014-06)
English: Cultivars with high and stable genetic potential for production and quality is the main goal of a fruit-breeding programme and are assessed in multi-environment trials due to the influence of rootstocks as well ...
The application of fossil grass-phytolith analysis in the reconstruction of cainozoic environments in the South African interior
(University of the Free State, 2009-05)
Grass-dominated ecosystems occupy a primary position with regard to current debates concerning key events in faunal turnover and human evolution in Africa. Our knowledge of how grass-dominated ecosystems in southern Africa ...
Detecting environmental change and anthropogenic activities on Laikipia Plateau, Kenya
(University of the Free State, 2008-02)
English: Pollen, spore and charcoal analysis of deposits from Marura and Ewaso Narok swamps in Laikipia, Kenya, reveals anthropogenic activities and climate variability during the Late Holocene. Specifically, there was a ...
Quantification of cassava mosaic geminiviruses and cassava brown streak viruses
(University of the Free State, 2016-01)
English: Cassava (Manihot esculanta Crantz) is a perennial woody plant which is cultivated in Africa, Asia and Latin America. It is tolerant to drought and grows in poor soils. It is a source of carbohydrates, vitamins and ...
Inoculation techniques and evaluation methodologies for Sclerotinia sclerotiorum head and stem rot in sunflower and soybean
(University of the Free State, 2018-01)
Sclerotinia stem and head rot on soybean and sunflower are caused by the fungal plant pathogen Sclerotinia sclerotiorum. This pathogen can be responsible for up to 75.0% yield loss. A major constraint in the effective ...
Genetic variability of carotenoids and polypoid induction towards vitamin A biofortification in plantain (Musa spp.)
(University of the Free State, 2018-07)
Vitamin A deficiency (VAD) is one of the most prevalent nutrient deficiencies affecting the health of resource-poor populations in developing countries. Plantains (Musa spp. AAB) are a specific group of bananas, which serve ...
The influence of sorghum physiology on rhizosphere interactions and their effect on root disease
(University of the Free State, 2018)
This study evaluated and investigated sorghum allelopathy and its various effects on microbial populations in the rhizosphere and effect of soil-borne pathogens. The effect of sorghum allelopathic extracts on rhizosphere ...
Characterisation of the physiological, biochemical and molecular responses of sorghum to drought stress
(University of the Free State, 2018-11)
Drought is a major threat to global food security due to its detrimental effects on plant growth, productivity and yield quality. Many climatic models are predicting the increasing duration and severity of drought episodes. ...
Vegetation ecology of Soetdoring Nature Reserve: pan, grassland and karroid communities
(University of the Free State, 2002-09)
English: The main aim of this study was to identify, classify, describe and ecologically interpret the plant communities and their variations for the pans, grassland and karroid grassland of Soetdoring Nature Reserve and ...