20 
H. C. Agricultural Experiment Station 
While it is evident that the rotundifolia grapes are more nearly 
dioecious than Yitis labrusca, the indications are that eventually we 
shall cultivate self-fertile rotundifolia varieties. 
Transmission of Colors. 
In our breeding w T ork special attention has been given to the in¬ 
heritance of colors. In fact a study of the transmission of colors 
has been the chief work of our breeding experiments. The reason 
why the early breeders gave up their breeding work was because nearly 
all of their seedlings from the Scuppernong were just the opposite 
in color from what they expected and wished. Eor several reasons 
already alluded to, it would be of little avail to attempt to improve 
at least the white varieties of this species, unless the white color 
could be transmitted to a large proportion of the seedlings. This the 
early experimenters were unable to do, for nearly all of their Scup¬ 
pernong seedlings produced black fruits. Erom the following tables 
it will be seen that the white color can be transmitted to all the seed¬ 
lings of the Scuppernong when the proper combinations are made in 
crossing. 
In studying the tables that follow it should be borne in mind that 
color of vine and color of fruit is always correlated in this species. 
The varieties that produce white colored fruit are always light col¬ 
ored vines, and those that produce black or red fruit are always dark 
vines. 
TABLE NO. 2. 
Table Showing Colors of Vines and Fruit in the Hybrids. 
Color of Scuppernong Hybrids. 
Cross 
Color of Plants 
Color of Fruit 
Scuppernong X Light Male No. 1... ....__ 
( Light 1667 
White 339 
Black none 
[ Dark none 
Red none 
Scuppernong X Light Male No. 2- __ _ 
[ Light 20 
I Dark none 
White 7 
Black none 
Red none 
Scuppernong X Light Male No. 3___ 
| Light 22 
N o vines in bearing 
[ Dark none 
Scuppernong X Dark Male No. 1_ 
| Light none 
[ Dark 644 
White none 
Black 163 
Red 141 
Scuppernong X Dark Male No. 2___ 
f Light none 
1 
White none 
Dark 1 
( Dark 49 
Red none 
Scuppernong X Dark Male No. 3_ . _ 
| Light 67 
No vines in bearing 
| Dark 118 
Scuppernong X Dark Male No. 4___ 
f Light 24 
No vines in bearing 
[ Dark 19 
