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.
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Showing 1 to 10 of 10 for “"transgenic corn"”.
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Modeling insect resistance to transgenic corn and cowpea
… to protect the efficacy of commercial transgenic crops expressing Bacillus thuringiensis toxins because the benefits of the pest susceptibility to Bt toxins is considered as a common good. Simulation models have helped guide the USEPA’s regulatory decisions on the IRM requirements of …
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Weed management in conventional, no-till, and transgenic corn with mesotrione combinations and other herbicides
Weed management programs in corn typically include herbicides applied both preemergence (PRE) and postemergence (POST) for season-long weed control. Mesotrione is a new triketone herbicide registered for PRE and POST control of broadleaf weeds in corn. Triketone herbicides function through …
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Responses of rotation-resistant and rotation-susceptible populations of the western corn rootworm to transgenic corn expressing cry toxins and validation of a damage function for corn rootworm larvae
The western corn rootworm, Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a significant insect pest of corn, Zea mays L. Yield losses and control costs associated with the corn rootworm complex—which includes the northern (Diabrotica barberi Smith & Lawrence) and southern …
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Unity, diversity, and resistance: The fight for maíz criollo in southern México
México is the world’s point of origin for corn, with thousands of different varieties all sprouting from one common ancestor, teosinte. It is due to this culturally rich and biologically diverse history of corn in México that the GM maize debates of the region are of particular relevance. This …
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Evaluation of transgenic, Bt-containing corn hybrids
European corn borer (ECB; Ostrinia nubilalis (Hubner)) is a major pest of corn (Zea mays L.) throughout the Corn Belt. Methods employed to control or manage this insect, such as polygenic plant resistance, introduced ECB predators, and chemical insecticides, have had some successes but economic …
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Inheritance and fitness costs Of field-derived resistance To Cry3Bb1 corn by western corn rootworm
<p>The western corn rootworm (Diabrotica virgifera virgifera LeConte) is serious pest of corn, particularly in the Midwestern United States. One strategy used to manage western corn rootworm is the planting of transgenic corn that produces one or more Cry toxins derived from Bacillus thuringiensis …
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Inheritance, fitness costs, and potential mechanisms of resistance for western corn rootworm larvae surviving Bt corn
The western corn rootworm, Diabrotica virgifera virgifera LeConte, has developed resistance to most control tactics used to manage it. Transgenic corn varieties that express insecticidal proteins from the bacterium Bacillus thuringiensis Berliner (Bt), cause mortality to target pests when ingested. …
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Improving Integrated Pest Management in Sweet Corn System
Corn earworm (CEW), Helicoverpa zea (Boddie), (Lepidoptera: Noctuidae) is a common insect pest of sweet corn in the United States. The larvae cause chewing damage on corn ears rendering them unmarketable. Traditionally, growers have controlled CEW in sweet corn using multiple applications of …
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Genetic and agronomic approaches for improving nitrogen use and maize productivity
… responsible use of N fertilizer is a cornerstone of high‐yielding maize production, and improvements in maize N use will require a combination of agronomic, breeding, and biotechnology approaches. A maize hybrid’s N use and productivity are influenced by its grain yield at low N (check …
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Investigation of Methods and Mechanisms of Control of Italian Ryegrass (Lolium multiflorum) in Corn (Zea mays) and Small Grains and of the Effects of Johnsongrass (Sorghum halepense) Control on Virus Diseases in Glyphosate-Tolerant Corn
… for control of Italian ryegrass in no-till corn [Zea mays (L.)] establishment. Herbicide programs using transgenic corn hybrids were compared to standard programs that utilize non-selective herbicides in combination with high rates of triazine herbicides. Italian ryegrass control and corn …