| f2 screen for resistance to bacillus thuringiensis cry2ab2-maize in field populations of spodoptera frugiperda (lepidoptera: noctuidae) from the southern united states. | the fall armyworm, spodoptera frugiperda (j. e. smith) (lepidoptera: noctuidae), is a target pest of transgenic maize and cotton expressing bacillus thuringiensis (bt) proteins in both north and south america. in 2013 and 2014, a total of 215 f2 two-parent families of s. frugiperda were established using single-pair mating of field individuals collected from seven locations in four states of the southern u.s.: texas, louisiana, georgia, and florida. the objective of the investigation was to dete ... | 2016 | 27311896 |
| evaluation of transgenic cotton varieties and a glyphosate application on seedling disease incidence. | a study was conducted to determine whether stand densities of transgenic cotton (gossypium hirsutum) varieties, with or without glyphosate, were similar to conventional varieties of the same lineage group in georgia and mississippi. transgenic and conventional cotton varieties were placed into five lineage groups of related varieties and seedling disease was evaluated in three greenhouse tests and a field trial using rhizoctonia solani ag-4. seed vigor was determined by standard germination stud ... | 2005 | 15973787 |
| transgenic crop trial's gene flow turns weeds into wimps. | | 2003 | 12556850 |
| comparative insecticidal properties of two nucleopolyhedrovirus vectors encoding a similar toxin gene chimer. | laboratory, greenhouse and field studies were conducted to characterize the insecticidal properties of genetically altered forms of autographa californica (speyer) nucleopolyhedrovirus (acnpv) and helicoverpa zea (boddie) npv (hznpv) against selected heliothine species. the altered viruses each contained a chimeric 0.8-kb fragment encoding the insect-specific, sodium channel neurotoxin from the algerian scorpion androctonus australis hector (aait, hence recombinant viruses designated ac-aait and ... | 2000 | 10985018 |
| comparison of morning and evening larvicide applications on black fly (diptera: simuliidae) mortality. | the downstream movement, or drift, of larval black flies as well as many other aquatic insects has been well documented. this phenomenon has most often been associated with the dusk-to-overnight time frame. operationally, larvicide applications targeting black flies are typically initiated early in the day and can extend until near sunset. to determine if larvicide applications conducted late in the day would be affected by the drift behavior of larval black flies, 6 larvicide applications were ... | 2011 | 21805855 |
| modeling the impact of alternative hosts on helicoverpa zea adaptation to bollgard cotton. | for highly polyphagous cotton, gossypium hirsutum l., pests such as helicoverpa zea (boddie), a substantial portion of the larval population develops on noncotton alternative hosts. these noncotton hosts potentially provide a natural refuge for h. zea, thereby slowing the evolution of resistance to the bacillus thuringiensis berliner (bt)-derived cry1ac protein present in bollgard cotton. here, we demonstrate how the measured contribution of such alternative hosts can be included in estimating t ... | 2006 | 17195681 |