Fig. 2

Germination rates for each experiment. A Germination rates for the two seed conditions (scarified vs. unscarified), in the ‘germination in water’ experiments, pooling across all treatments. B Germination rates for each one of the four treatments in the ‘germination in water’ experiments, pooling across both seed conditions (scarified and unscarified). C Germination rates for each combination of seed condition (scarified or unscarified) and treatment, in the ‘germination in water’ experiments. D Germination rates for the subsequent ‘germination over a substrate’ experiment, for each of the two seed conditions (scarified and unscarified), pooling across treatments. E Germination rates for each one of the four treatments in the ‘germination over a substrate’ experiments, pooling across both seed conditions (scarified and unscarified). F Germination rates for each combination of seed condition (scarified or unscarified) and treatment, in the ‘germination over a substrate’ experiments. Letters indicate homogeneous groups as suggested by an a-posteriori analysis. The different treatments are explained in Fig. S1