Table 2.

Parameters of the linear regression of rate of development against temperature of vernalized plants of L. fendleri and L. mendocina (emergence to first flower open)

	Intercept ± s.e.	Slope ± s.e.				Temperature (°C)		Duration of development
Species	(1/d ×10–3)	(1/°Cd ×10–3)	r 2	n*	P*	Base	Optimum	(TT, °Cd)
L. fendleri	8·6 ± 1·00	1·9 ± 0·06	0·952	10	<0·001	4·6	∼20·0	536·6
L. mendocina	1·8 ± 0·93	0·6 ± 0·06	0·782	†	<0·001	–2·9	∼20·0	1566·0

Durations in thermal time were calculated as the reciprocal of the slopes.

* n is the sample size; P is the linear regression probability level.

^† for 9 °C, n = 10; for 12 and 20 °C, n = 8; for 16 °C, n = 6.