Figure 7 in Pericarp-mediated chemical dormancy controls the fruit germination of the invasive hoary cress (Lepidium drobo), but not of hairy whitetop (Lepidium oppelionum)

Figure 7. The effect of exogenous abscisic acid (ABA), wash water from Lepidium drobo pericarp (fresh, fresh-washed, and afterripened) on the germination of L. drobo fresh and afterripened isolated seeds.(A) Germination dose-response of L.drobo seeds incubated with different ABA concentrations.(B) The effect of wash water from pericarp on the germination of L. drobo seeds.Wash water of fresh L. drobo pericarp inhibits at a level similar to 0.3 μM ABA.Lepidium oppelionum pericarp does not contain ABA or other water-soluble compounds that may inhibit germination.Mean values ± SE (N = 3 × 25) of accessions KM 1296 and KM 1754 (2014 to 2015 harvest) at optimal germination assay conditions (12/12-h light regime at 25/15 C day/night for 28 d) are presented. Pericarp tissues of 300 mg were washed with 3 ml of distilled water using a shaker at 100 rpm for 6 h to obtain the pericarp wash water applied in the germination assays.