Abstract: Asian corn borer, Ostrinia furnacalis, is an important maize pest. The most economical and effective measurement to control it was to breed resistant varieties. In 2016, the resistance level of 1 463 common maize inbred lines to maize borer was evaluated in Fengyang, Anhui and Ledong, Hainan. At the same time, the physicochemical characters, such as plant height, ear height, leaf number, length, width and angle of spike three leaves, stem diameter, leaf thickness, leaf hardness, tannin content, wax content, soluble sugar and soluble protein content, were measured. The relationship between borer resistance and physicochemical characters was analyzed. The identification results showed as follows: there were 142 highly-resistant inbred lines, 317 resistant inbred lines and 322 mid-resistant inbred lines and zoophobocus inbred lines accounted for 53.38%. Correlation analysis showed that the plant height, ear height, leaf number, leaf length, leaf width, leaf angle, stem diameter, and wax content of maize inbred lines were not significantly related to borer resistance. However, the leaf thickness, leaf hardness, tannin content, soluble sugar and soluble protein content were significantly correlated with maize resistance.

Key words: maize inbred line, Ostrinia furnacalis, resistance identification, resistance mechanism