Figure 4
From: Less fit Lamium amplexicaule plants produce more dispersible seeds
Germination test: spotted seeds have a higher germination rate and lower variation in germination time. An inverse Kaplan-Meier survival plot shows the proportion of spotted (blue) and unspotted (red) seeds germination (y-axis) as function of time in days (x-axis). Unspotted seeds germinated in lower proportion compared to spotted seeds (n = 108 seeds for each category, Wilcoxon rank-sum test, W = 3118, p = 0.024), and their germination time was more variable (χ2 = 11.2, DF = 1, p-value = 8.14 · 10−4, log rank-sum test).
