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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: Field screening of maize germplasm lines for whorl-feeding fall armyworm resistance

Author
item Ni, Xinzhi
item Xu, Wenwei
item Peters, David
item Williams, William
item Krakowsky, Matthew

Submitted to: Entomological Society of America Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 6/1/2014
Publication Date: N/A
Citation: N/A

Interpretive Summary: not required

Technical Abstract: A new set of 13 maize germplasm lines from the Germplasm Enhancement of Maize (GEM) Program was examined with 5 controls that have different degrees of insect resistance. Significant difference in fall armyworm damage ratings was detected among the GEM inbred lines. In addition, the total number of predators was negatively correlated to the fall armyworm damage ratings, which suggested that the predators might play a role in reducing fall armyworm damage on corn plants at whorl stage. The convergent lady beetle, insidious flower bug, and earwigs are the three most abundant predator species, which are positively correlated to the total number of predators in the study. Six inbred lines were identified as the best resources for fall armyworm resistance using both damage rating and predator survey data.

Last Modified: 10/17/2017
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