Fig. 4From: Limiting temperatures of embryo growth and seed germination of Fraxinus excelsior L. (Oleaceae): a threshold model approachGrowth rate of embryos. The dotted line represents 95% confidence intervals. Model parameters are in Appendix Table 5. Intercepts of the x-axis represent the minimum (Tb = 1.4 ± 1.1 °C) and maximum temperature (Tc = 29.9 ± 2.0 °C) for embryo growth, and peak represents optimal temperature (Topt = 15.7 ± 0.3). Points represent tested treesBack to article page