Publications
| dna screening reveals pink bollworm resistance to bt cotton remains rare after a decade of exposure. | transgenic crops producing toxins from the bacterium bacillus thuringiensis (bt) kill insect pests and can reduce reliance on insecticide sprays. although bt cotton (gossypium hirsutum l.) and bt corn (zea mays l.) covered 26 million ha worldwide in 2005, their success could be cut short by evolution of pest resistance. monitoring the early phases of pest resistance to bt crops is crucial, but it has been extremely difficult because bioassays usually cannot detect heterozygotes harboring one all ... | 2006 | 17066779 |
| outcrossed cottonseed and adventitious bt plants in arizona refuges. | outcrossing of non-bt cotton (gossypium hirsutum (l.)) in refuges by transgenic bt cultivars could reduce the efficacy of refuges for delaying resistance in seed-feeding pests. based on reports that outcrossing decreased as distance from bt cotton increased in small-scale studies, we hypothesized that increasing refuge width or distance from bt fields would reduce outcrossing. in a large-scale study in arizona, we quantified bt seed in refuges of experimental and commercial fields, comparing out ... | 2008 | 18549770 |