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Photosynthetic capacity was assayed as chlorophyll (a + b) content (A), chlorophyll fluorescence Fv/Fm (B) and stomatal conductance (C) of Vicia faba plants exposed to MCs crude extract containing 2.5 mg·L−1 of MCs for 28 days and submitted to three independent exposure experiments. Significant differences (p ≤ 0.05) between control and treatment groups are indicated by (*).
