Abstract:Twenty-three corn varieties were studied to screening and identification of resistance to low iron capacity. Maize seedlings grown in low and regular iron supply conditions. Seven days later, fifteen indexes including plant height, stem diameter, visible leaf number, expanded leaf number, leaf area, root length, root volume, chlorophyll content, shoot dry weight, root dry weight, root shoot ratio, total dry weight, active iron, iron content and iron accumulation of the seedlings were measured. Relative values of these indexes were comprehensively evaluated the resistance low iron capacity, using the principal component analysis, subordinate function analysis and clustering analysis. The results showed that the different corn varieties resistant to low iron capacity significantly different. Fangyu1, Fukangyu909, Zhengda619, Zhenghong102, Fude2 and Zhenghong2 have strong resistance to low iron. Relative values of expanded leaf number, leaf area, root length, root dry weight and iron accumulation could be considered as low iron-resistance selection in maize seedling stage. The regression equation, D= (-384.23+2.71X4+2.50X5+3.22X6+1.70X9+4.86X14) ×10-3, can be used to predict the low iron-resistance ability of corn varieties in seedling stage.