322 
Journal of Agricultural Research voi. xxvi, no. t 
It has just come to the attention of the writers that besides the five 
progeny trees mentioned above there are six others close beside them 
in the same orchard that were propagated in 1914 from this same parent 
tree by one of the staff of the California Citrus Experiment Station. 
Three of these were grown from buds from the unproductive part of the 
tree and three from buds from the normal part of the tree. These 
progeny trees w^ere planted in 1917 at the same time as those already 
described and are similar in appearance. These six progeny trees are 
included in the general variety planting of the experiment station 
and no production records have been kept of them previous to this 
year. The three progeny trees grown from the unproductive limb 
are all absolutely barren this season, while the three grown from the 
normal part of the parent tree are bearing 58, 65, and 24 fruits respec¬ 
tively, the tree bearing 24 fruits being much smaller than the others. 
It is evident that in these cases quantity production has been trans¬ 
mitted by bud propagation from parent limbs to progeny trees, thus 
demonstrating the possibility of such inheritance. Variations in pro¬ 
duction are sometimes due to soil or stock influences or to differences in 
cultural practices. Such variations are of an entirely different nature 
from those described above and are probably not transmitted in ordinary 
propagations. 
CONCLUSIONS 
These results indicate that the number or quantity of fruit produced 
by citrus trees is a transmittable character capable of perpetuation 
through bud propagation. 
These experiments show how the presence of trees of unproductive 
strains in established citrus orchards may be due to the unintentional 
propagation of limb variations of this character. 
These facts and the results previously reported emphasize in a most 
striking manner the great importance of careful bud selection in the 
commercial propagation of citrus trees in order to avoid the perpetuation 
of unproductive and worthless strains. 
