Fundamental studies on rice breeding through hybridization between Japanese and foreign varieties. : IX. Identification of genotypes of varieties in respect to anthocyanin coloration by the mode of F<SUB>2</SUB> segregation.

Abstract

ldentification of the genotypes with respect to anthocyanin coloration of eight rice varieties of Japanese and Indian origin which had been determined beforehand by the phenotypes of F1 hybrids obtained in the testcrosses between them and thirteen tester varieties of known genotype (Kondo, 1963) was made by examining the mode of segregation in their F2 populations. Twenty-three F2 Strains each including 130-300individuals were investigated. The varieties which were used as parents in the crosses are listed in Table 1. From the patterns of segregation shown in Tables 2, 3, 4 and 5 it has been proved that the genotype of each variety determined previously by the F1 phenotypes is valid.