. 2015 Feb 4;30(1):51–62. doi: 10.1264/jsme2.ME14117

Table 3.

Tiller density and dry mass by organs, root:shoot ratio and total dry mass of rice plants measured at around the panicle initiation stage (July 5) in the normal surface water-soil temperaure (NT), elevated surface water-soil temperature (ET) and low nitrogen (LN) plots nested in the CO₂ treatments (ambient and FACE).

Split-plot-factor	Tiller density (/m²)			Leaf blade dry mass (g/m²)			Stem & sheath dry mass (g/m²)			Root dry mass (g/m²)			Root:shoot ratio			Total dry mass (g/m²)

	Ambient	FACE	Sig^a	Ambient	FACE	Sig^a	Ambient	FACE	Sig^a	Ambient	FACE	Sig^a	Ambient	FACE	Sig^a	Ambient	FACE	Sig^a
AT	471	554	b	112	131	b	138	164	b	54	58	a	0.22	0.20	a	304	353	b
ET	535	586	b	139	157	c	158	192	c	59	65	a	0.20	0.19	a	355	414	c
LN	393	422	a	84	94	a	110	132	a	54	60	a	0.28	0.26	b	248	286	a
Analysis of Variance Results
CO₂	+ (0.082)			+ (0.063)			^*			ns (0.186)			ns (0.31)			^*
Split-factor (S)	^***			^***			^***			ns			^**			^***
CO₂ x S	ns			ns			ns			ns			ns			ns

The split-plot factors followed by the same letters in each column were not significantly different (P>0.05) by the Tukey’s method.

^*,**,***

indicate that the effects were significant at P<0.05, P<0.01 and P<0.001, respectively.