Location: Crop Genetics and Breeding Research
Title: Evaluation of corn germplasm lines for fall armyworm (Lepidoptera: Noctuidae) resistance using whorl damage rating and predator survey Authors
Submitted to: Entomological Society of America Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: July 15, 2012
Publication Date: N/A
Interpretive Summary: not required
Technical Abstract: After evaluating the ear-colonizing insects and diseases, 13 germplasm lines from the Germplasm Enhancement of Maize (GEM) Program in Ames, IA, and Raleigh, NC, and 11 lines (derived from GEM germplasm) from the Texas Agricultural Experiment Station in Lubbock, TX, were examined for whorl-feeding fall armyworm resistance in 2009 and 2010 with four local resistant and susceptible controls. The germplasm lines were evaluated for the fall armyworm resistance using visual damage ratings on 7 and 14-d after the artificial infestation, and predator abundance was also recorded 7-d after the infestation. Five of the 24 germplasm lines were identified as resistant to the fall armyworm using the damage ratings and predator abundance. Of the five lines, two from Brazil, two from Cuba, and one from Thailand. These newly-identified lines will be used for new germplasm development in the corn breeding program.