96 
lirst inoculation tests (for method of inoculation sce Report for 
1937. BRookLyN Bor. Garb. RECORD 27: 51. 1938) made last 
September and October already indicate that some of them have 
the required resistance. 
Method of Circumvent- 
ing the Biight.—In order to 
keep the Japanese-Ameri- 
can hybrids in a healthy, 
vigorous condition so that 
the breeding can be contin- 
ued, the following method 
was devised. Any chest- 
nut, not long after the 
blight attacks it to any 
extent on the main trunk, 
usually develops shoots or 
“suckers”? from the base 
of the trunk, especially if 
the lesion is near the base. 
In case the blight fungus 
attacks the base of the 
tree, as often happens, it 
te. 
Fic. 6. Hybrid Che 
. — is then a simple matter to 
\ stnut (C. crenata 
x C. dentata, Hammond 99A—33) eight 
years old, badly blighted at base. Tosave Shoots and graft it or 
it for further breeding work, 3 basal shoots them into the healthy 
(one concealed by trunk) have been 
a One of 5 hybrids thus the diseased part. This 
take the strongest of these 
bark of the trunk above 
was done in April of last 
year successfully with 5 of our best Japanese-American hybrids 
(see fig. 6) and last fall we harvested valuable hybrid nuts 
from these trees. 
Pollen Contributed in 1941 
Pollen of the chestnut was received in 1941 from the following 
persons. We are glad to have this opportunity of expressing 
here our thanks for this splendid cooperation. 
