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This is how the four inbreds are combined into the ‘double 
cross’ hybrid seed you plant. In the first year A and B are 
crossed to produce a "single cross’ hybrid AB, and Inbreds C 
and D are crossed to produce a ''single cross’ hybrid CD. 
The two "single cross'' hybrids are then crossed to produce the 
“double cross'’ hybrid seed which you plant. 

Hybrid corn now is boosting production for south- 
ern farmers by 15 to 40 percent over yields from 
the old open-pollinated corn. Hybrid corn is the 
product of entirely new breeding methods. By 
these methods, the hybrid corn breeder takes out- 
standing qualities from a number of open-polli- 
nated varieties and concentrates them in a new 
hybrid corn. 
Our corn breeders do this by developing inbreds 
from the outstanding open-pollinated corn of the 
South. In this inbreeding process the corn breeder 
is able to save the best qualities of the original 
open-pollinated corn and discard its weaknesses. 
Then four of these inbreds are combined into a 
strain of hybrid corn such as Funk’s G-714, and 
G-714, as a result, has many of the outstanding 
qualities of its several open-pollinated ancestors. 

CONSISTENTLY GOOD—Year After Year. 
