Multivariate statistical analysis of 11 inorganic elements in P. hexandrum seed samples at different stages of stratification.

(A) PCA scores of samples at different stratification stages, circles of the same color in the figure indicate three replicates in the sample, larger distances between the circles in the figure indicate larger differences; (B) PLS-DA scores between samples before and after dormancy release; (C) PRT test diagram of PLS-DA; (D) VIP values of inorganic elements.