Feb. 23, 1924 
Teosinte Maize Hybrids 
565 
It seems clear that such characters as season, total leaves and the 
several measures of the inflorescences all are correlated with the variation 
known as crinkly, though none are characters by which the crinkly 
type is differentiated from the normal, and their correlation with type is 
not due to their association with some one crinkly characteristic. 
Since the amount of leaf lobing was closely correlated with the crinkly 
type, and, furthermore, since this character would be expected to have 
little weight in the classification of plants, it may be well to examine 
the correlations of this character with all others. These correlations are 
given in Table V. With this character the usual correlation formula can 
be applied with but two exceptions—type of plant and alicole index. 
As in Table IV, the characters are arranged in the order of their degree 
of relationship with the lobing of the leaves. Thirteen of the 36 coeffi¬ 
cients are less than three times their errors; of these, seven were 
significantly correlated with plant type, but not one of the seven is 
significantly correlated with the degree of leaf lobing. 6 
Table V .—Product moment correlations of the degree of lobing with the characters named a 
Rank. 
Character. 
Correlation. 
I 
Type of plant. 
b 0.872 
.674 
•534 
•495 
“•454 
-•447 
-•430 
.348 
— .272 
— .270 
— .269 
— .265 
-.256 
.249 
•245 
-.239 
-•235 
— .204 
-.203 
.188 
2 
Leaf index..... 
* 
Width of leaf. 
O 
4 
Degree of color. 
T 
c 
Length of leaf. 
6 
Length of longest tassel branch... 
7 
Length of sheath. 
8 
Degree of crinkly. 
0 
Days to silk. 
y 
10 
Days to pollen. 
11 
Length of best inflorescence. 
12 
Length of ear stalk of best inflorescence. 
13 
14 
1 5 
16 
Height... 
Rows in the central spike. 
Number double 9 alicoles. 
Height of tallest sucker.. 
1 7 
18 
Number of suckers. 
Total sucker height. 
19 
20 
Number of spikes in prophyllary. 
Length 9 portion of best inflorescence. 
21 
Length of branching space. 
-.186 
22 
Alicole index..... 
b —. 169 
-•157 
-.145 
.118 
23 
24 
s 25 
26 
Length of central spike.. 
Number of branches on best inflorescence. 
Number of rows alicoles on best spike. 
Leaves above best inflorescence...."r. 
-.103 
.088 
27 
28 
Rows in terminal spike of best inflorescence. 
Total number of leaves... 
— .086 
29 
30 
3 1 
32 
33 
34 
35 
3<5 
Length of glume. 
—. 080 
Length of best spike. 
.076 
— .042 
— .042 
-•039 
-•035 
.024 
.010 
Number of single 9 alicoles. 
Leaves above... 
Number of tassel branches. 
Position of best spike. 
Days pollen to silk... 
Leaves on best inflorescence..... 
• Coefficients in excess of 0.150 are greater than three times the error. 6 Biserial correlations. 
• There were eight coefficients with type of plant which were less than three times their error, but one of 
these, that with central spike index, does not appear in the correlation with the degree of lobing. It was 
omitted from all product moment correlations to facilitate the calculations by means of punched cards. 
The available cards were too short to accommodate all the characters. 
