Breeding Botundifoeia Grapes 
31 
Conclusions Relative to Colors. 
; 
A careful study of tlie results obtained relative to colors of vines 
leads to tbe following conclusions: 
First. That all tbe crosses between a light variety and a light male 
vine produce only light plants. 
Second. That all the crosses between a pure dark variety and a pure 
dark male vine produce only dark vines. 
Third. That all the crosses between a pure light variety and a pure 
dark male vine produce only dark plants. 
Fourth. That all crosses between a pure dark variety and a pure 
light male vine produce only dark plants. 
Fifth. That in all the crosses between a pure light variety and a 
dark male vine, which possesses the light color in the recessive form, 
practically one half of the resulting seedlings will be dark and one 
half will be light in color. 
Sixth. That in all the crosses between a dark variety, which pos¬ 
sesses the light color in the recessive form, and a pure dark male, the 
hybrids will all be dark in color. 
A study of the results obtained relative to colors of fruits in the 
hybrids leads to the following conclusions. 
First. All hybrids resulting from a pure light variety crossed with 
a pure light male vine produce only white fruits. 
Second. All hybrids resulting from pure dark varieties crossed with 
pure dark male vines produce only dark fruits. 
Third. All hybrids resulting from a pure light variety when crossed 
with a pure dark male vine, produce only dark fruits. 
Fourth. All hybrids resulting from a pure red variety when crossed 
with a pure light male, produce only red or reddish fruits. 
Fifth. Hybrids resulting from a dark variety, that has the white 
color recessive, when crossed with a pure light male vine, will be of 
two kinds and about equally divided: those that are light in vine 
characters will produce white fruits, and those that are dark in vine 
characters will produce either black or red fruit depending upon the 
inherent dark colors of the parent vines. 
Sixth. Hybrids resulting from a pure light variety, when crossed 
with a dark male which is heterozygous for black and red, will be of 
two kinds and about equally divided: those that will produce black 
fruit and those that will produce red fruit. 
Seventh. Hybrids resulting from a red variety, that is heterozygous 
for the red and the white colors, when crossed with a pure light male 
vine, will be of two kinds and about equally divided: those that possess 
the light vine character will produce white fruits, and those that possess 
the dark vine characters will produce red fruit. 
Eighth. That color of the vine and of the fruit in rotundifolia 
grapes is a Mendelian character, and that they behave as such. 
Ninth. That sap coloration in seedlings of rotundifolia grapes is 
dominant over the absence of sap color. 
Tenth. That the rotundifolia grape vines, both male and female, 
are either pure white, pure black, pure red, heterozygous for black 
and white, for black and red, or for red and white. 
