Bul. 1046, U. S. Dept. of Agriculture. 
PLATE XI. 
Fic. |.—RUST RESISTANCE OF TWO VARIETIES OF WINTER WHEAT IN I918. 
Seedling leaves of P1066 (4) and Kanred (B), both inoculated on April 22 and photographed 
on May 11. Compared with the rusted leaves of the susceptible check (shown at the left of 
each group) these leaves are seen to be entirely free from flecks and uredinia. 
Fic. 2.—RuUST SUSCEPTIBILITY OF TWO VARIETIES OF SPRING WHEAT IN I9I7. 
Seedling leaves: C, Arnautka (C. I. 1493), inoculated on March 29 and photographed on April 19; 
D, hybrid 3 X 122A12, showing normal uredinia in this stage, inoculated on April 4 and photo- 
graphed on April 27. Although known to be resistant to some strains of stem rust in the field, 
these two varieties show visible signs of infection when inoculated with the same strain of rust 
used with A and B (fig. 1, above). 
COMPARATIVE RUST RESISTANCE OF SOME WINTER AND 
SPRING VARIETIES OF WHEAT. 
