USDA Forest Service

Pacific Southwest Research Station


Pacific Southwest Research Station
800 Buchanan Street
Albany, CA 94710-0011

(510) 559-6300

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.

Research Topics Forest Genetics

Ontogenetic Resistance
Some highly resistant sugar pines in heavily infected stands transmit none of their resistance to seedlings.
Note offspring of unifected tree on the left do not express resistance when challenged by rust as seedlings (below).
Last Modified: Feb 25, 2011 04:15:22 PM