48 
I. NAGAI: 
Kind of hybrid 
Self purple 
Loc. purple 
Brown 
Yellow 
“ Hanbun.” x “ Genroku.” 
— 
£ 
— 
“ Otsubu.” x “ Haguro.” 
£ 
— 
— ‘ 
* 
F 2 “ Hanbun.” x “ Genroku.” 
9 
3 
3 
1 
F 2 “ Otsubu.” x “ Haguro.” 
9 
3 
3 
1 
The section of the reddish brown grain showed that the pigment wa 3 
chiefly confined to the single cell layer in the testa as Kondo observed, though 
in the pericarp, a yellowish pigment also occurred. In the yellowish brown 
grain, the pigment occurred chiefly in the pericarp and the testa was slightly 
pigmented. We are dealing, therefore, with the pericarp and the seed-coat 
colour in two types of the grains, but in the fully ripe grain, the two parts 
are hardly distinguishable unlike the bean in which they are differentiated 
into the pod and the seed coat. 
2. The Mode of Inheritance of Anthocyanin and Brown 
Pigment in the Seed Coat of Glycine soja 
Nothing perhaps excels the seed coat of the legumes in diversity of the 
colour characters exhibited by the plant except the flowers of some ornamental 
plants. As we have already seen, the seed coat of the coloured bean of the 
legumes is rich in the chromogenic substance previous to pigmentation. Some 
data on the genetical behavior of the colour characters in the seed coat of soy 
bean ( Glycine Soja ) are discussed in this chapter. 
(a) Colour Types of the Seed Coat. 
The different varieties of Japanese soy beans may be classified under the 
following types with respect to the colour of the seed coat. 
I. Self-colour type. 
1. Black (deep purple). 
2. Reddish brown. 
3. Brown with or without a green tinge including different shades 
of brown. 
4. Buff. 
