Fig. 7From: Does long-term cadmium exposure influence the composition of pectic polysaccharides in the cell wall of Medicago sativa stems?Content of precursor molecules of ethylene biosynthesis (pmol g− 1 FW) in stems of M. sativa after long-term Cd exposure. Data are given as means from five biological replicates. Error bars indicate the SEM. Significance was determined with a t-test (p ≤ 0.05) and is indicated with an asteriskBack to article page