抄録
Genetic variation of anthocyanins in various parts of rice plant is analyzed in the hybrid between Toketsumochi and Norin No. 25.
Violet-purple color of the internode is dominant over green, containing chrysanthemin (C), keracyanin (K) and cyanin (Cy). The colored F2 segregates include two groups with respect to the color components, in one group, C, K and Cy co-occur like as the colored parent and F1 plants do, whereas in the other group C and K co-occur but no Cy. The ratio of two groups agrees approximately with an expectation on the basis of 3:1 ratio.
Violet-purple apiculus is dominant over green containing C and K. The colored F2 segregates include those containing C and K and those C alone. Plants in two groups agree in number with an expectation based on a 15:1 ratio.
Purple color of the stigma is suppressed in the F1 plants indicating the presence of inhibitors. The colored and colorless segregate in a 7:9 ratio. The colored stigma of the parent contains C and K, and most of the F2 colored segregates have C but in few, K co-occurs.
Dark violet color of kernels is dominant over “white”. In F2 violet-purple, brown and “white” segregate approximately in a 9:6:1 ratio. C and U (uliginosin) co-occur in the violet-purple kernel (pericarp) of the colored parent and F1, but the F2 colored segregates include those with C and U and those with C alone with an approximate ratio 9:7.
Linkage relations seem to exist between the genes relating to synthesis of different components and distribution of them to various parts of the plant.
