QTLs （Quantitative trait loci）affecting content of gel consistency,alkali spreading value and indica-japonica differentiation were analyzed using a recombinant inbred（RI ）lines derived from a cross of Asominori×IR 24 by single marker analysis and interval mapping.Four QTLs （Ge1～Ge4）for gel consistency were detected and mapped on chromosome 2?7?9in this population.Variances explained by the QTLs were 16.9%、13.2%、14.0%、11.3%respectively.Two QTLs （As1～As2）for Alkali spreading value were detected and mapped on chromosome 5?4in this population.Variances explained by the QTLs were 17.5%、13.0% respectively. Five QTLs （Ij1～Ij5）for indicajaponica differentiation were detected on chromosome 1、2、11 and variances explained by Ij1～Ij5 was 21.9%、21.4%、13.4%、25.0%、14.5% respectively.It was showed that there was significant correlation between gel consistency,alkali spreading value and indica-japonica differentiation.