PLATE 9 
Two ears of seed com from the same source. Both ears appeared perfectly normal 
externally but germination in the modified rag doll showed great difference. 
A. —Actual germination of ear io B in rag doll; 70 per cent were dead. Culture 
studies (see PI. 10) showed 70 per cent of the kernels internally infected with Diplodia 
zeae } 20 per cent with Gibberella saubinetii, and 80 per cent with Cephalosporium 
sacchari. Diplodia zeae was the active agent in reducing germination. 
B. —Actual germination (100 per cent) of ear 10 A, from same source as ear 10 B 
above. Culture studies showed 100 per cent infection with Cephalosporium sacchari 
and 40 per cent infection with Gibberella saubinetii . 
Somewhat reduced. 
