Figure 1.

Variability in the total concentration of phosphorus (P), sulphur (S), potassium (K), calcium (Ca), manganese (Mn), iron (Fe), and zinc (Zn) in whole grain of wheat (Triticum aestivum L.) cultivars differing in the awn type (awned cultivars have long awns and awnletted cultivars have short or no awns) grown in the same field. Shown are boxplots representing 25th and 75th percentile of the data, with the middle line representing the median, whiskers representing the 5th and 95th percentile and the black dots representing outliers (n = 87 and n = 100 data points of nine awned and 11 awnletted wheat cultivars, respectively). Asterisks indicate significant differences between the awned and the awnletted cultivars (Student t-test; *** p < 0.001 and * p < 0.05).