PLATE loo. 



A. — F3 family of a cross between emmer (Minnesota 1165), and Marquis, showing 

 face and side view. This family proved rust-resistant and was also pure for keelless, 

 compact heads and thrashed like common wheat. 



B. — Heads of an F3 family which resembled common wheat. It was rust-suscep- 

 tible. 



C. — Heads of different plants of an F3 family of a cross between emmer (C I 1524) 

 and Marquis. The plants varied from emmerlike and intermediate forms to those 

 resembling common wheat as shown at the left. This family bred true for rust 

 resistance. 



D. — Represents a very frequent sort of segregation obtained in the F3 generation. 

 Many families gave only emmerlike and keelless, compact headed sorts which thrashed 

 like common wheat. 



