Freezing Injury or Seed Corn 
II 
Table 8 — Effect of freezing temperatures on germination of 
corn differing in moisture content (1913 and 191 Jf) 
Temperature range 8° to l°F. 
Moisture 
range 
Moisture 
in grain 
( 
termination 
Ice 
observed 
j in grain 
Embryos dark 
or light 
Normal 
grain 
Frozen 
grain 
Ratio 
of normal 
to frozen 
Per cent 
Per cent 
Per cent 
Per cent 
f 52.6 
30 
0 
100:0 
Ice 
* 
OU tO uo . . 
\ 51.5 
100 
0 
100:0 
Ice 
* 
Average. . 
52.1 
65 
0 
100:0 
40 to 45. . 
41.7 
55 
0 
100:0 
Ice 
* 
35 to 40 . . 
37.7 | 
100 
0 
100:0 
Ice 
* 
30 to 35. . 
31.2 
100 
0 
100:0 
Ice 
* 
29.5 
75 
0 
100:0 
Ice 
* 
25 to 30 . . 
27.4 
100 
20 
100:20 
* 
Dark 
l 26.9 
100 
0 
100:0 
Ice 
* 
Average. . 
27.9 
91.7 
6.6 
100:7 
t 24.8 
100 
100 
100:100 
* 
Light 
20 to 25 . . 
•< 
! 22.9 
100 
0 
100:0 
Ice 
* 
21.0 
100 
40 
100:40 
* 
Dark and light 
Average . . 
22.9 
100 
46.6 
! 100:47 
' 
[ 19.4 
100 
100 
100:100 
* 
Medium dark 
19.3 
100 
80 
100:80 
* 
Dark and light 
18.5 
100 
100 
100:100 
* 
Medium dark 
15 to 20 . . 
17.7 
100 
100 
100:100 
* 
Light 
17.6 
100 
100 
100:100 
* 
Light 
16.4 
100 
100 
100:100 
* 
Light 
16.0 
100 
100 
100:100 
* 
Light 
15.7 
100 
100 
100:100 
* 
Medium dark 
Average. . 
17.6 ' 
100 
97.5 
100:98 
f 14.8 
100 
100 
100:100 
* 
Light 
14.7 
100 
100 
100:100 
* 
Light 
14.1 
100 
100 
100:100 
* 
Light 
13.8 
100 
100 
100:100 
* 
Light 
10 to 15. . 
13.7 
100 
100 
100:100 
* 
Light 
13.2 
100 
100 
100:100 
* 
Light 
13.0 
100 
100 
100:100 
* 
Light 
11.7 
100 
100 
100:100 
* 
Light 
10.8 
100 
100 
100:100 
* 
Light 
Average . . 
13.5 
100 
100 
100:100 
*No observations made. 
