12 



Journal of Agricultural Research 



Vol. XIX, No. I 



Table V. — Distribution of individuals in Fj of teosinte-maize hybrid with respect to 



characters recorded as indices 



o Figures srive number of plants exhibiting each character to the extent shown in first column in this sec- 

 tion of the table. 



The average height of Tom Thumb maize plants at Chula Vista was 

 6 dcm. and that of Florida teosinte 23 dcm. The Fj plants averaged 17 

 dcm. The mean of the Fj plants was 14. The range was from 2 to 23 

 dcm. The distribution (fig. i) was as nearly normal as could be expected 

 from the number of individuals involved. There is, furthermore, no in- 

 dication of skewness, the mode and the mean practically coinciding. 



Although the parental varieties differ greatly in height, the parental 

 species overlap. Indeed the taller varieties of maize probably exceed the 

 tallest teosinte in height. 



Height is positively correlated with all of the four tassel measurements, 

 and the correlations are significantly higher than was found in a progeny 



