Browsing Natural and Agricultural Sciences by Subject "Resistance"
Now showing items 1-10 of 11
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Base-line susceptibility of Busseola fusca for Bt maize in South Africa
(North-West University (South Africa), 2015)Genetically modified maize that express insecticidal proteins (Bt proteins) have been commercialized in South Africa for the control of Busseola fusca (Lepidoptera: Noctuidae). Busseola fusca has been reported to be ... -
Community structure of gut microbes in Busseola fusca (Lepidoptera : Noctuidae)
(North-West University, 2015)Bt-maize is engineered to express insecticidal toxins derived from the bacterium Bacillus thuringiensis and has been shown to be very effective against pests like Busseola fusca.However, resistance of this pest against ... -
Comparative phenology of Lepidoptera on genetically modified BT- and non-BT maize
(North-West University, 2006)The maize stem borers, Busseola fusca (Fuller) (Lepidoptera: Noctuidae) and Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) are economically important pests of maize in South Africa. Genetically modified Bt maize ... -
Diversity of gut–microorganisms in Bt–resistant and Bt–susceptible larvae of the maize stem borer (Busseola fusca) (Lepidoptera : Noctuidae)
(North-West University, 2012)Maize is one of Africa’s main food sources. It is therefore important to protect this crop against pests such as the maize stem borer Busseola fusca. Genetically modified Bacillus thuringiensis (Bt) maize has been shown ... -
Efficacy of Bt proteins and the effect of temperature on the development of spiny bollworm in South Africa
(North-West University (South Africa) , Potchefstroom Campus, 2016)Genetically modified cotton expressing Bacillus thuringiensis (Bt) proteins has been cultivated in South Africa since 1998 for control of the bollworm complex. Spiny bollworms, Earias biplaga (Walker) (Lepidoptera: Noctuidae) ... -
Host plant resistance as a management tool for Ditylenchus africanus (Nematoda : Tylenchidae) on groundnut (Arachis hypogaea)
(North-West University, 2008)Groundnut is an important cash crop both for commercial and smallscale farmers in South Africa. The effect of Ditylenchus africanus on groundnut is mainly qualitative, leading to downgrading of groundnut consignments. This ... -
Host plant suitability and baseline susceptibility of Tuta absoluta (Lepidoptera : Gelechiidae) to insecticides in South Africa
(North-West University (South Africa), 2021)The devastating tomato pest, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) (tomato leafminer/tomato pinworm), originates from South America. It invaded South Africa in 2016. It not only causes severe damage to tomato, ... -
Identification of novel viral mutations in HIV-1 subtype C conferring resistance to the broadly neutralizing antibody, VRC01
(North-West University (South Africa), 2023)Human immunodeficiency virus type 1 (HIV-1) subtype C remains a global concern with HIV-1 subtype C being the most prevalent form of HIV-1, accounting for approximately 50% of infections worldwide. HIV-1 bNAbs are the ... -
A PCR detection method for mutations in receptor–protein genes from Busseola fusca potentially involved in Bt–resistance
(North-West University, 2012)Genetically modified (GM) crops attracted interest globally when use of these crops resulted in significant increases in yield and production. These increases were due to protection of crops from pests, weeds and diseases. ... -
Status of resistance of Helicoverpa armigera (Lepidoptera: Noctuidae) and Diparopsis castanea (Lepidoptera: Noctuidae) to Bt cotton in South Africa
(North-West University, 2011)Genetically modified (GM) cotton expressing Cry1Ac proteins was released in South Africa in 1997 for control of the bollworm complex on this crop. No reports of the failure of Bollgard® cotton to control these pests have ...