PLATE 33 



A. — Wheat spikes showing different degrees of spelting. i and 2 are intense spelts; 

 3 to 9 are intermediate forms, showing varying degrees of dilution of the spelt character; 

 10 is a pure-breeding wheat (sativum) form, showing no trace of spelting. The numbers 

 represent approximately the types falling in the 10 classes of spelting. 



B. — Snythetic spelts produced in Fj generation in wheat X wheat crosses; a, b, c, and 

 d are the sativum parent plants; b-i spelt form of the progeny of a X b; c-i to c-5 

 spelt forms of the progeny of a X c; d-i and d-2 spelt forms of the progeny a X d. 



