Hayes and Garber - Cucurbit Breeding

272 BREEDING CROP PLANTS
these varieties gave seedlings which produced fruit with a red
skin. Other crosses led to the belief that yellow is recessive
and that a cross between red and yellow is intermediate in skin
color. Sweetness was believed to be a recessive character to
acidity with the indication that the FI was intermediate.
Raspberry. Bailey (1898) believed that the purple raspberry,
Rubus neglectus, was a natural hybrid between the black
and red varieties. This was definitely proved at the Geneva
Station by a cross between Smith No. 1, a black raspberry,
and Lonboro, a red seedling, which gave 209 purple raspberries
(Wellington, 1913, Anthony and Hedrick, 1916). The same Smith
No. 1 crossed with June, a red raspberry, gave 50 purples and
46 blacks. Selfed seedlings of Columbian, a purple variety, gave
31 purple, 7 red wine, 2 reddish, 1 yellow, and 1 black. The mode
of inheritance of colors can not be determined, although it
seems that several of the black varieties are heterozygous for
color and that several factors for color are present. The presence
of bloom on the canes proved to be a partially dominant character
over the absence of bloom. The number of spines on
canes showed segregation in selfed seedlings of Columbian.
Yellow raspberries could be told in the seedling stage from the
black and purple by the absence of red tinge on the leaves. The
production of promising varieties from crosses between the red
and black varieties was especially mentioned.
Grape. The Geneva Experiment Station, in New York,
(Hedrick and Anthony 1915) likewise furnished the greater part
of our data on inheritance of characters in the grape. Table
LXXIII gives the results of crosses for skin color.
TABLE LXXIII.
INHERITANCE OF SKIN COLOR IN GRAPES
Color of seedlings
Color of parental types