Freezing Injury of Seed Corn 
35 
Table 5 (Continued) — Effect of freezing temperature on ger- 
mination of corn differing in moisture content (1913 and 191 h) 
Temperature range 32° to 28° F. 
Germination 
Ice 
Moisture 
Embryos dark 
Moisture 
Ratio 
of normal 
observed 
range 
in grain 
Normal 
Frozen 
in grain 
or light 
grain 
grain 
to frozen 
Per cent 
Per cent 
Per cent 
Per cent 
45.8 
100 
100 
100:100 
* 
* 
44.1 
100 
100 
100:100 
* 
* 
40 to 45. . 
44.1 
100 
40 
100:40 
* 
Dark 
44.0 
100 
40 
100:40 
* 
Dark 
42.4 
75 
50 
100:67 
None 
Light 
Average. . 
44.1 
95 
66.0 
100:69 
39.5 
100 
55 
100:55 
* 
Light 
38.9 
100 
20 
1 100:20 
* 
Dark 
38.7 
60 
60 
1 100:100 
* 
Light 
38.6 
100 
50 
! 100:50 
* 
* 
37.1 
100 
58 
| 100:58 
* 
Light 
35 to 40. . 
< 
36.3 
100 
80 
i 100:80 
* 
Light 
36.1 
100 
85 
; 100:85 
None 
Light 
35.9 
100 
87 
1 100:87 
None 
Light 
35.8 
100 
100 
100:100 
* 
Light 
35.6 
100 
100 
100:100 
* 
* 
, 35.1 
| 100 
100 
100:100 
* 
Light 
Average . . 
37.1 
96.4 
65 
100:71 
f 33.7 
i 100 
100 
! 100:100 
❖ 
* 
30 to 35. . 
I 33.1 
90 
35 
j 100:39 
None 
Light 
| 30.6 
100 
100 
100:100 
* 
j Light 
l 30.3 
100 
60 
100:60 
* 
Dark and light 
Average . . 
31.9 
97.5 
73.8 
100:75 
f 28.3 
100 
100 
J 100:100 
* 
* 
28.2 
100 
80 
100:80 
* 
Light 
28.1 
60 
60 
! 100:100 
* 
Dark 
25 to 30. . 
< 
27.8 
' 27.3 
100 
100 
100 
87 
100:100 
1 100:87 
None 
Light 
Light 
27.3 
80 
80 
100:100 
* 
Light 
26.4 
100 
20 
100:20 
* 
Dark and light 
25.7 
100 
100 
100:100 
* 
Light 
Average . . 
27.4 
92.5 
78.4 
100:85 
*No observations made. 
