: 
NATURAL WHEAT-RYE HYBRIDS NO. 7 AND No. 9 
In the group of four heads shown at the left, the two in the center are hybrids and the two 
on the outside are heads of the parent wheat. When found in a plot of bearded wheat the 
hybrid is bearded Wheat-rye hybrid No. 9 is the left one of the two heads shown at the 
right of the illustration. Most wheat-rye hybrid plants of the first generation (Fl) produce 
no seed but this head produced nine seeds. On the right of it is a head of the parent wheat 
variety. The illustration is approximately two-thirds natural size. (Fig. 19.) 
