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. 2020 Mar 30;20:130. doi: 10.1186/s12870-020-2325-6

Fig. 2.

Fig. 2

Ordination diagram showing the results of PCA analysis with selected parameters in fronds of P. cretica var. Albo-lineata. Treatment abbreviations: control, treated with 0 mg As kg− 1 soil; As100, treated with 100 mg As kg− 1 soil; As250, treated with 250 mg As kg− 1 soil. Parameter abbreviations: Crt, carotenoids; Chl A, chlorophyll a; Chl B, chlorophyll b; Σ Chl, total chlorophyll; WP, water potential; PN, net photosynthetic rate; E, transpiration rate; Fv/Fm, fluorescence; 5mC, 5-methylcytosine; As, Cu, Mg, Mn, S and Zn; total content of elements