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United States Department of Agriculture

Agricultural Research Service

Research Project: Genetic Improvement of Maize and Sorghum for Resistance to Biotic Stress

Location: Crop Genetics and Breeding Research

Title: Fall armyworm and corn earworm resistance in the breeding crosses of maize inbreds with high levels of phytoalexins

Authors
item Ni, Xinzhi
item Huffaker, Alisa
item Schmelz, Eric

Submitted to: Entomological Society of America Regional Meetings
Publication Type: Abstract Only
Publication Acceptance Date: February 28, 2014
Publication Date: N/A

Interpretive Summary: not required

Technical Abstract: In order to develop maize germplasm with resistance to multiple insect pests and aflatoxin accumulation, a set of reciprocal breeding crosses was made using maize inbred lines with high levels of kauralexins or zealexins. The evaluation of the breeding crosses for insect resistance utilized the randomized complete block design with four replications. The fall armyworm [Spodoptera frugiperda (J.E. Smith)] and corn earworm [Helicoverpa zea (Boddie)] resistance was screened with artificial infestations using commercial transgenic maize hybrids as the controls. Significant difference in fall armyworm and corn earworm resistance was found among the breeding crosses. Its ramification for new maize germplasm development would also be discussed.

Last Modified: 9/20/2014
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