22 



mance of each group in succeeding generations and will reveal the interesting 

 fact that from the group possessing the most open heads in the beginning 

 there was ultimately produced a sort (0501) which remained relatively lax, 

 while the group possessing the average density of the whole 1000 original 



Photo by Courtesy S. S. Ass'n. 



Clay Moss 



FIG. II. Two Mass-Selected Barley Sorts. 



heads was found at the end of three years to have an average density identical 

 with that of the most densely headed group. From the progeny of the latter 

 group a sort (0502) was produced which had a denser head, ripened about 10 

 days earlier and produced a lower yield than 0501. It also possessed a 

 peculiar dark grey color of stem and leaf. Both 0501 and 0502, which re- 

 ceived the name Clay and Moss respectively, belonged to the Erectum type 

 although the former possessed a decidedly nodding (Nutans) head. This is 

 a good example of a sort with a nodding head actually belonging to the 

 Erectum group and indicates clearly why the position of the head cannot 

 be taken into consideration in a system of classification (See classification 

 of barley types page 133). 



