A MATURE MAIZE PLANT HAVING A ZIGZAG CULM 
Zigzag culm is an inherited plant abnormality which was at first thought to be another example of 
mutation, but later observations make this appear unlikely. The effect of zigzag culms, as one 
would expect, is to dwarf the plant in varying degrees depending on the number of internodes 
affected. This plant is extremely dwarfed because of the large number of internodes affected. 
ae fe sheathes overlap greatly in the ear shoot region because of the shortness of the internodes, 
Fig. 8. 
