June i 4 ,1924 Correlation among Quantitative Characters in Maize 1097 
INHERITANCE OF THE QUANTITATIVE CHARACTERS 
The designations of the characters studied are self-explanatory, with the possible 
exception of “weight of seed,” which is the average weight of a single seed pro¬ 
duced by the plants measured, not the weight of the seed planted. The frequency 
distributions for several of the characters in which the difference between the 
parents was greatest are shown in figures 2 to 5. These polygons include in 
Fig. 2.—Frequency distribution forlheight of plant. Estimated factorial difference between parents 28 
Fig. 3 —Frequency distributions for days to silk. Estimated factorial difference between parents 20 
each case the parents, the Fi and the F 2 generations. In all the characters studied 
except number of rows on the ear, the Fi generation may be said to be inter¬ 
mediate between the parents, though actually below the mean of the parents in 
five cases and above in both the length of ear and in number of rows. In some 
cases the size of the larger parent is approximated. With number of rows the Fi 
exceeds the larger parent, the increased number tending to be maintained in the 
F 2 remaining above the mean of the parents. 
