A GENETICO-PH Y SIOLOGIC AL STUDY ON THE FORMATION ETC. 
21 
Name of variety 
Colour of flower 
Colour of leaf 
Chromogen 
P F 
“Golden Wax” 
Pale pink 
Greenish yellow 
+ 
IV 
“ Chosen ” 
15 
Green 
— 
IH 
“ Longfellow ” 
White 
99 
— 
III 
“ Kumamoto-Ingen ” 
Cream 
51 
— 
IV 
“ Black Valentine ” 
Pale pink 
9'9 
+ 
IV 
“ Canadian Wonder ” 
Pink 
Greenish yellow- 
in 
“ Biruma-Ingen ” 
” 
55 
— 
in 
Unlike the case of the above, both eliromogenic substances co-exist in the 
leaf of certain fruit trees. 
Table 10 . 
Cliromogen content of the leaf of certain fruit trees. 
Name of plant 
Chromogen P 
Chromogen F 
Grapes ( Vit is) 
“ Adirondack ” 
II 
I 
“ Bacon ” 
1 + 
1 
“ Brighton ” 
I 
I- 
“ Catawba ” 
I 
II 
“ Champion ” 
I- 
II 
“ Concord ” 
I 
II 
“ Hartford Prohfic ” 
II 
II 
“ Hervert ” 
If 
II 
“ Koshu ” 
1 + 
I 
“ Ives ” 
1 + 
11+ 
“ Lady Washington ” 
I 
n+ 
“Sweet Water” 
I+ + 
i 
Sand Pears (Pirns serotina) 
- 
“ Nijuseiki ” 
I 
i 
“ Kozo ” 
II 
n 
“ Chojuro ” 
II 
ii 
Apples (Malus sylvestris ) 
“ Iwai ” 
III 
m 
“ Jonathan ” (“ Kogyoku ”) 
III 
i+ 
