30 
ET. C. Agricultural Experiment Station 
Latliam is the only other red variety besides the Thomas, that was 
used in our breeding work. The results obtained in breeding this 
variety show that when it is crossed with a pure light male vine, about 
one half of the resulting hybrid seedling vines will be light and one 
half will be dark in color. This proves that Latham is a heterozygote 
possessing the dominant red color and the light color is the recessive 
form. Latham is a very fine variety and should be found in every 
collection where breeding work is attempted. 
It is to be regretted that none of these hybrids have yet borne; 
but the most essential data so far as color is concerned, have been 
obtained. 
TABLE NO. 8. 
X 
Table Showing the Color of the Mish Hybrid Seedlings. 
Cross 
Color of Plants 
Color of Fruit 
Mish X Light Male No. 1_ 
1 
Light none 
Dark 4 
No vines in bearing 
Mish X Dark Male No. l._.. . ... 
Light none 
Dark 1 
No vines in bearing 
While our work with this excellent variety is but very limited, the 
results, so far obtained, seem to indicate that Mish is a pure dark 
variety. When Mish is to be used in future breeding work and dark 
colors only are desired in the seedlings, they can be obtained by using for 
male parents preferably dark vines; however, for the first generation 
hybrids, any male vine will do. When white fruiting seedlings are 
desired, they can only be obtained in the second generation after Mish 
had been crossed with a light colored male vine. 
TABL E NO. 9. 
Table Showing the Color of the Smith Hybrid Seedlings. 
Cross 
Color of Plants 
Color of Fruit 
Smith X Light Male No. 1_ . ..__ . 
| Light 6 
No vines in bearing 
[ Dark 6 
The Smith is a black variety closely resembling the Memory; and 
gives results similar to the Memory when crossed with a pure light 
male vine. Since our plants of this variety were small when the 
crossing was done, it was possible to obtain only a small number of 
hybrids. Just one half of these hybrids are light in color and one 
half are dark in color. This variety possesses fair keeping and ship¬ 
ping qualities, and as it gives both light and dark seedlings in the first 
generation it may prove of some value in breeding work. Judging 
simply from appearances, without knowing anything of the parentage 
of the Smith, we believe that it has no important characters for breed¬ 
ing purposes that are not already found in the Memory. This, how¬ 
ever, can only be determined definitely by further work. 
