Table 2.

The df and P values from the two-way analysis of nighttime variation (N) and drought effects (D) on leaf soluble sugars content (mg g⁻¹) and leaf starch content (mg g⁻¹) in Chloris virgata (annual C₄), Hemarthria altissima (perennial C₄) and Leymus chinensis (perennial C₃).

Species		Leaf soluble sugar (mg g−1)		Leaf starch (mg g−1)
		df	P	df	P
Chloris virgata	D	3	<0.001	3	<0.001
	N	2	<0.001	2	<0.001
	D × N	6	0.032	6	<0.001
Hemarthria altissima	D	3	<0.001	3	<0.001
	N	2	<0.001	2	<0.001
	D × N	6	<0.001	6	<0.001
Leymus chinensis	D	3	0.985	3	<0.001
	N	2	<0.001	2	<0.001
	D × N	6	0.044	6	<0.001