Abstract
YAMAUCHI has made a cross beween vareties "Karasu-Mochi" which was blackish violet in glume color and " Shinriki" with colorless or green glume F1 plants had blackish violet glume, somewhat paler than " Karasu-Moch ", and gave in F2 the flowing five phenotypes as to the glume color, namely, 1 ) blackish volet, 2) blackish violet at apiculus, 3) reddsh brown, 4) reddish brown at aicuslus and 5) coloress, in the ratio of 27 : 9 : 9 : 3 : 16 respectively. Based on this result he assumed three genes. B. R, and S concerning the glume colors. According to him, S : a gene responsible for the development of reddish brown pigment at apictilus.
