USDA Forest Service

Pacific Southwest Research Station

Pacific Southwest
Research Station

1731 Research Park Dr.
Davis, CA 95618
(530) 759-1700
United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Building a gene pyramid for durable resistance.

Open pollinated seedlings are screened for MGR in greenhouse tests.
MGR geneotypes are planted at the Happy Camp Outplanting Site, where they are exposed to the virulent race (vcr1). Survivors will have MGR plus at least one componant of SRR.