COMPLEMENTARY GENES Ph AND Bh CONTROLLING RIPENING-BLACK COLORATION OF RICE HULLS AND THEIR GEOGRAPHICAL DISTRIBUTION.

Abstract

The ripening-black coloration of rice hulls is controlled by two complementary genes, Ph and Bh. Ph is the phenol reaction gene, and Bh seems to be a gene producing some phenol substance. Most Ph were distributed among indica varieties, while Bh were distributed among japonica varieties.