Fig. 8

Principal Component Analysis (PCA) for all variables measured. (A) factorial charges plot and (B) score plot. In the score plot, the symbols represent control (●), 1000 mg NPs L^− 1 (△), 2000 mg NPs L^− 1 (▲), and 2000 mg µPs L^− 1 (✽). Abbreviations: P_n net photosynthetic rate; E, transpiration; g_s, stomatal conductance; F_v´/F_m´, maximum quantum yield; ETR, electron transport rate; ΦPSII, effective quantum yield; Glu, glucose; Fru, fructose; Suc, sucrose; Sta, starch; Pro, proteins; aa, amino acids; WLf, water loss after 110 min; DMl, leaf dry matter; DMs, stem dry matter; DMr, root dry matter; DMt, total dry matter