【Abstract】 The genetic expression of four quality traits, grain length (GL), grain width (GW), gelatinizationtemperature (GT) and amylose content (AC) was identified each by two indica/japonica crosses using two indica andthree japonica cultivars. The genetic expression of GL and GW is completely subject to the diploid maternal genotype, and that of GT and AC is controlled by the diploid maternal genotype as well as the triploid endosperm genotype. The endosperm genotype may play the main role in the genetic expression of GT and AC.更多还原