Figure 3. Germination percentage (a, b) and germination rate (c, d) changes of C4 (a, c) and C3 (b, d) species with increasing average temperature in the AW and SW temperature regimes.
The relationship between C4 species and the average temperature is fitted by linear equation; the relationship between C3 species and the average temperature is fitted by polynomial equation. Dash-dot lines represent 95% confidence of AW temperature regime and dotted lines represent 95% confidence of SW temperature regime. a1, R 1 2, P 1 represent the parameter, coefficient of determination and probability for the fitting in the AW regime and a2, R 2 2, P 2 represent the parameter, coefficient of determination and probability for the fitting in the SW regime.