Freezing Injury of Seed Corn 43 
Table 9 — Effect of freezing temperatures on germination of 
corn differing in moisture content (1913 and 191J+) 
Temperature range 0° to - — T°F. 
Moisture 
range 
Moisture 
in grain 
Germination 
Ice 
observed 
in grain 
Embryos dark 
or light 
Normal 
grain 
Frozen 
grain 
Ratio 
of normal 
to frozen 
Per cent 
Per cent 
Per cent 
Per cent 
65 to 70. . 
67.8 
100 
o 
100:0 
Ice 
Dark 
60 to 65.. 
60.4 
100 
0 
100:0 
Ice 
Dark 
KK 4- n an 
/ 59.6 
100 
0 
100:0 
Ice 
Dark 
OO tO ou . . 
\ 59.2 
100 
0 
100:0 
Ice 
Dark 
Average . . 
59.4 
100 
0 
100:0 
KK 
f 51.1 
100 
1 0 
100:0 
Ice 
Dark 
ou to OO . . 
\ 50.3 
100 
0 
100:0 
Ice 
Dark 
Average . . 
50.7 
100 
0 
100:0 
f 49.7 
100 
0 
100:0 
Ice 
Dark 
48.8 
100 
0 
100:0 
* 
Dark 
48.5 
100 
0 
100:0 
Ice 
Dark 
48.2 
100 
0 
100:0 
* 
Dark 
AX j- n Xf) 
46.8 
i 100 
0 
100:0 
Ice 
Dark 
*±Q lO OU . . 
45.9 
100 
0 
100:0 
* 
Dark 
45.6 
100 
0 
100:0 
Ice 
Dark 
45.4 
100 
0 
100:0 
Ice 
Dark 
45.3 
100 
0 
100:0 
* 
Dark 
45.2 
100 
0 
100:0 
Ice 
Dark 
Average . . 
46.9 
100 
0 
100:0 
{ 43.6 
100 
0 
100:0 
Ice 
Dark 
43.3 
100 
0 
100:0 
* 
Dark 
42.3 
100 
0 
100:0 
Ice 
Dark 
40 to 45. . 
41.0 
100 
0 
100:0 
Ice 
Dark 
40.9 
100 
0 
100:0 
* 
Dark 
40.7 
100 
0 
100:0 
Ice 
Dark 
40.2 
100 
0 
100:0 
Ice 
Dark 
Average . . 
41.7 
100 
0 1 
100:0 
*No observations made. 
