INOCULATION OF WESTERN WHITE PINE WITH BLISTER RUST 361 



liil 



(B) 



Figure 3. (A) Presowing progeny test seed on paper toweling 

 strips; left, stenciling seed spots, right front, placing 

 methyl-cellulose droplets on stenciled seed spots in which 

 seed are sown; rear, drying the presown, 10-block strips. 

 (B) The 3"x24" toweling strips are randomly fall-sown in 

 seedbed compartments and covered with sand; after germina- 

 tion they become the basic 16-seedling replicates of the 

 test. 



