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United States Department of Agriculture

Agricultural Research Service

Research Project: Identifying and Characterizing Resistance from Diverse Potato Germplasm Sources to Highly Aggressive Strains of Late Blight (MSU - Kirk)

Location: Vegetable Crops Research Unit

Project Number: 3655-21220-002-06
Project Type: Specific Cooperative Agreement

Start Date: Jul 19, 2010
End Date: Jul 31, 2014

Objective:
Build on previous work and study new opportunities to advance our abilities to manage late blight in commercial settings as well as breed resistant varieties. Characterize late blight resistance of the best RB/conventionally bred progeny from previous work and continue to breed new late blight resistant combinations in elite breeding material Determine the survival potential and epidemic initiation risk of P. infestans genotypes in tubers

Approach:
A multi-disciplinary approach will be undertaken to study P. infestans, apply emerging genetic approaches, breed resistant germplasm, conduct field studies, and provide recommendations to the growers. An understanding of molecular interactions between host R gene products and pathogen effectors has provided valuable data that will allow us to identify or engineer novel R-genes that can be used in breeding programs. Characterization of the overwintering ability of novel P. infestans genotypes as mycelia on currently grown potato varieties and as oospores in field soil will provide needed biological information to production scientists for estimating epidemic risk for improved control recommendations. Cooperator will be responsible for studies on the overwintering capabilities of various P. infestans strains on potato tubers as well as assisting in field screening of germplasm.

Last Modified: 9/23/2014
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