Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 12 of 12 for “"Bt-maize"”.
-
Biosafety research into Diabrotica resistant Bt-maize: indicator organisms and monitoring methods
… future relevance for the European market are GM-maize varieties with resistance against the Western corn rootworm Diabrotica virgifera virgifera. This chrysomelid beetle has been introduced from the United States and poses a dire threat to the maize production in Europe. The resistance of maize …
-
Resistance management of western corn rootworm (Coleoptera: Chrysomelidae) in transgenic Bt maize
Transgenic maize producing insecticidal toxins from the bacterium Bacillus thuringiensis (Bt) has been used to manage western corn rootworm, a major pest of maize, since 2003. However, this pest rapidly evolved resistance to Bt traits expressed in maize for rootworm management. This research …
-
A Study of Neonicotinoid Seed Treatments in Bt Maize: Insect Resistance Management, Efficacy, and Environmental Fate
Roughly 79-100% of maize in the United States (US) is treated with a neonicotinoid seed treatment (NST), and transgenic (GMO) maize, Zea mays L. (Poaceae), that produces insecticidal toxins by way of genes derived from Bacillus thuringiensis (Bt), occupies more than 75% of maize acreage. Among a …
-
Mycotoxins Risk in Maize Fields in Relation to Insect and Edaphic Factors in South Dakota
… human and animal consumption in conventional and Bt maize hybrids. The relationship of insect abundance, insect kernel damage and edaphic factors with mycotoxin concentrations in conventional and Bt maize were investigated in eastern South Dakota during 2008 through 2010. Caterpillar abundance and …
-
Evolution of Bacillus thuringiensis Maize Yields in South Africa
… benefits of genetically modified (GM) maize in South Africa have been well documented in previous literature. However, concerns about the longevity of these benefits, have been raised following reports of Busseola fusca developing resistance to Bacillus thuringiensis (Bt) maize in South …
-
Effekte des Anbaus von Bt-Mais auf Nichtzielarthropoden der Krautschichtfauna : Monitoringorganismen und praktikable Erfassungsmethoden
… to determine possible unintended effects of Bt-maize (Mon810, cultivar Novelis) cultivation on nontarget organisms of the arthropod community compared with an isogenic maize line (cultivar Nobilis) with and without an insecticide treatment. Furthermore, suitable monitoring organisms and …
-
Research in Biological Control of the Formosan Subterranean Termite
The Formosan subterranean termite, Coptotermes formosanus Shiraki, is a worldwide distributed pest of wooden structures and living plants that causes huge economic losses. Compared to chemical pesticides, biological control may provide a more environmentally friendly and persistent method for the …
-
Risikobewertung von gentechnisch verändertem Mais im Hinblick auf ausgewählte Schmetterlinge der Agarlandschaft
The cultivation of genetically engineered maize expressing lepidopteran-specific Bt proteins poses a potential risk for non-target butterflies. For a comprehensive environmental risk assessment (ERA) both hazard and exposure have to be considered. To assess hazard it is essential to determine the …
-
Eignung unterschiedlicher Monitoring-Methoden als Grundlage zum Risk Assessment für Agrarsysteme : am Beispiel einer biozönologischen Reihenuntersuchung und einer Einzelfallstudie
… Risk Assessment of genetically modified maize. The second study was complementary to a research project to evaluate the impact of pesticides in arable landscapes.Study 1: Effects of cultivation of genetically modified Bt maize on epigeic arthropods (Araneae; Carabidae). A field study was …
-
Farm-level and socio-economic impacts of a genetically modified subsistence crop : the case of smallholder farmers in KwaZulu-Natal, South Africa
… 2007. The first plantings of insect resistant (Bt) white maize in 2001/02 established South Africa as the first GM subsistence crop producer in the world. South African commercial farmers’ adoption of GM seed technologies has been impressive and in 2009/10 approximately 69 percent of the total …
-
Ökologische und phytomedizinische Untersuchungen zum Anbau von Bt-Mais im Maiszünsler-Befallsgebiet Oderbruch
… der Anbau von Bacillus thuringiensis-Mais (Bt-Mais). Mit Hilfe der Gentechnik wurden Gene des Bakteriums Bacillus thuringiensis übertragen, die einen für Fraßinsekten giftigen Wirkstoff bilden, wodurch die Pflanzen während der kompletten Vegetation vor den Larven des Maiszünslers geschützt …
-
Faunistische Umweltrisikobewertung von Bt-Mais mit multiplen Resistenzgenen und Evaluierung von Trigonotylus caelestialium (Kirkaldy) und Lumbricus terrestris Linnaeus als Modellorganismen
… against several pests. Genetically modified Bt plants expressing Cry proteins from Bacillus thuringiensis (BERLINER) defend themselves specifically against pests. The maize line DKC 5143-Bt MON 89034 x MON 88017 expresses the Cry1A.105 and Cry2Ab2 against the Ostrinia nubilalis and the …