Figure 2: KAR inhibits soybean seed germination under shaded conditions.

Healthy soybean seeds (cultivar NN99) were incubated on two layers of filter paper in Petri dishes under dark (a), white light (b) and shaded conditions (c). The concentration of KAR used was 1 μM, and the equivalent ultrapure water was added as control (CK). The germination rates under dark conditions were recorded using a safe green light. Quantitative analysis of germination rates is shown in the right panels. The representative images (21 h after sowing) are shown (left panels). Fresh weight (d) and radicle length (e) of germinated soybean seeds under shaded conditions were measured. Bar = 10 mm. The average percentages of four repeats ± standard error are shown. **Difference is significant at the 0.01 level.