152 INBREEDING AND OUTBEEEDING 



100 



75 



25 



Gronth Curves of 

 Two Inbred Strains 

 of Maize and Their 

 Fj and F 2 Hybrids. 



30 40 50 60 70 80 90 100 



Number of Bays from Planting 



33. Graphs showing growth curves of two inbred strains of maize and thicr first 

 and second generation hybrids. 



