The mixed major-gene plus polygene inheritance model was used to analyze the inheritance of bolting in the heading Chinese cabbage (Brassica campestris L.ssp.pekinensis) with six generations of early bolting variety 06S1703 (P1) and bolting variety 06J32 (P2) and their,F1,B1,B2 and F2.The results showed that the bolting trait was controlled by two major genes with additive-dominance-epistatic effects plus poly-genes with additive-dominance-epistatic effects (E-0 model) in hybrid (06S1703×06J32).the additive...