Fig. 1
From: Mapping of a major QTL for salt tolerance of mature field-grown maize plants based on SNP markers
Soil composition in CP and TZ fields at depths of 0–20 and 20–40 cm. The bar charts represent the mean ± SE of five soil samples from each field. a Total salt content. b Na+ content. c pH value. *, **, and *** indicate significant difference at P < 0.05, P < 0.01, and P < 0.001, respectively. CP indicates Changping. TZ indicates Tongzhou