Abstract:Seven methods for identification of resistance to Sclerotinia sclerotiorum were compared with two susceptible and two resistant rapeseed varieties under the same conditions for their effectiveness in the resistance identification of rapeseed. The results indicated that the method of dipping root(or leaf) into oxalic acid solution was not suitable for resistance identification of Brassica rapa L. It was suggested that the resistance identification be done during flowering period and seedling identification was used only as supplement as the resistance to S.sclerotiorum was different at the different growth stages. In three inoculation methods, inoculating infected wheat grain to leaf axil, mycelium agar disk to leaf axil and infected toothpick to stem, the disease severity in the varieties tested were toothpicks>wheat grains>agar disks. The results of the three methods were significantly correlated with field inoculation identification (r>0.8000). The three methods during flowering period could well represent varieties’ resistance and susceptibility. Especially, the correlation between toothpick inoculation and field inoculation was highly significant (r=0.9140). Forty-four breeding materials which were provided by the Rapeseed Research Center of Sichuan Agricultural University, were tested with the toothpick method. The results showed that there were 12 high resistant materials, and among them resistance of 5 materials was much higher than control variety.