48 



I. KAGAI: 



The sec-tiou of the reclchsh bruwu gi'ain showetl that the pigiueut was 

 chiefly coufiued to the siDgle cell layer iu the testa as KoNDO obseiTetl, though 

 iu the ]^)ericarp, a yellowish pigment also occuiTecl. Iu the yellowish browu 

 grain, the pigment occuiTed chiefly iu the pericaip and the testa was slightly 

 IJigmeuted. We are deaHug, therefore, ^nth the pericarp and the seed-coat 

 colour iu two ty^jes of the grains, but iu the fully ripe grain, the two parts 

 i\xe hardly- distinguishable unlike the beau iu wliich they are diflereutiated 

 into the jxid and the seed c-oat. 



2. The Mode of Lsheeitanxe of Anthocyaxiis" and Brows 

 Pigment in the Seed Coat of Glycixe soja 



Notliing jDerhaps excels the seed coat of the legumes iu diveisity of the 

 colour cLiracters exhibited by the plant except the flowei-s of some omameutal 

 plants. As -we have akeady seen, the seed coat of the coloured beau of the 

 legumes is rich in the chroniogeuic substance previous to pigmentation. Some 

 data on the genetical behavior of the colour charactei-s in the seed coat of soy 

 liean {Glycine Soja) are discussed in tliis chapter. 



(a) Colour Tj-jjes of the Seed Coat. 



The diflereut varieties of Japanese soy beans may be classified under the 

 following t>-j)es with respect to the colour of the seed coat. 

 I. Self-colour t^vjie. 



1. Black (deep piu-ple). 



2. Retldish lirowu. 



3. Brown with or without a gi'eeu tinge including diftorent sliades 



of brown. 



4. Buflü 



