I24 Hayes. 
of variability. Among the F, generations grown (402 >< 405)—1I—2 
was selected because it resembled Cuban. Although no statistical 
results can be given here we may say that this sclection bred true 
Fig. 5. (402 X 405)—1—3. A representative plant of an F, generation of a cross 
between Havana and Cuban. This selection bred true for the Havana type of leaf. 
for the Cuban leaf shape. The parent plant of the selection 
(402 >< 405)—1—3 closely resembled Havana in leaf shape and, as 
we have already noted, bred comparatively true for leaf number. 
This selection bred true for the Havana type of leaf. 
Summary of Results. 
I. Number of leaves per plant is a stable character and little 
affected by changes of environment. 
