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United States Department of Agriculture

Agricultural Research Service

Title: New Leads for Corn Rootworm Resistant Germplasm and New Screening Techniques for Finding Additional Leads.

Authors
item Hibbard, Bruce
item Barry, B
item Darrah, Larry

Submitted to: International Plant Resistance to Insects Workshop Abstracts & Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: February 26, 1996
Publication Date: N/A

Technical Abstract: The western corn rootworm is among the most important insect pests in the U.S., yet no lines of corn have been previously identified which have antibiosis resistance to corn rootworm larvae. We have been conducting field, greenhouse, and laboratory screening of exotic maize and maize relatives in an effort to identify germplasm resistant (antibiosis/nonpreference) to this major pest. We have identified a numbe of potential sources of resistant germplasm as indicated by root damage in the field. We are currently evaluating these germplasms in greenhouse and laboratory experiments aimed at verifying this resistance. In addition, we have developed a laboratory bioassay involving host-plant recognition by neonate larvae which may serve as a highly cost efficient way to screen for additional resistant germplasm. Results from the field trials as well as the bioassay and greenhouse data will be discussed.

Last Modified: 9/22/2014
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