Theses and Dissertations
Issuing Body
Mississippi State University
Advisor
Catchot, Angus L., Jr.
Committee Member
Cook, Donald R.
Committee Member
Musser, Fred R.
Committee Member
Stewart, Scott D.
Committee Member
Leonard, Billy Rogers
Other Advisors or Committee Members
Allen, Thomas W., Jr.
Date of Degree
12-11-2015
Document Type
Graduate Thesis - Open Access
Major
Entomology
Degree Name
Master of Science (M.S.)
College
College of Agriculture and Life Sciences
Department
Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology
Abstract
Field corn, Zea mays L., has been introduced to the market with pyramided Bacillus thuringiensis (Bt) corn technologies. These technologies reduce kernel damage from ear feeding caterpillar pests, including corn earworm, Helicoverpa zea (Boddie). The first generation Bt traits in field corn demonstrated limited activity on corn earworm feeding on grain in ears. The pyramided corn technologies have greater cumulative protein concentrations and improved expression throughout the plant, so these corn traits should provide an effective management tool against these pests. In addition, reduced kernel injury may also have a direct effect on physical grain quality. The results for this trial showed no relationship between number of damaged kernels and yield was observed for corn hybrid expressing the Herculex®, YieldGard®, or Genuity VT Triple Pro® technologies. A significant relationship between both damaged kernels and test weight and damaged kernels and aflatoxin concentrations was observed in two technologies.
URI
https://hdl.handle.net/11668/19027
Recommended Citation
Bibb, Jenny Lee, "Impact of Corn Earworm on Field Corn Yield and Grain Quality" (2015). Theses and Dissertations. 2584.
https://scholarsjunction.msstate.edu/td/2584