Figure 3.

Germination responses of C. album dimorphic seeds to treatment with phytohormones and biosynthesis inhibitors. (A-D) Effects of gibberellins (GA₄₊₇), flurprimidol, PAC, and fluridone (FLU), on the germination time courses of dormant black #1 (A), AR black #1 (B), black #2 (C), and brown #2 (D) seeds. (E-G) Effects of 100 µM GA₄₊₇ (GA), 3.5 mM ethephon (E, ethylene release compound), and 10 mM KNO₃ on the maximal germination percentages of dormant black #1 (E), AR black #1 (F), and black #2 (G) seed populations. (H) Effects of GA and FLU on brown #1 seeds. (I) Maximal germination percentages of water (H₂O) and 0.1% (v/v) dimethyl sulfoxide (DMSO) controls. Mean ± SEM values are presented. AR, after-ripened; D, dormant; FLU, fluridone; MeOH, methanol; PAC, paclobutrazol; * indicates mean value between DMSO and H2O controls.