Table 2. Analysis of variance (ANOVA) of the F-values for panicle number, spikelet per panicle, grain filling, grain weight, and grain yield.

Source of Variance	Panicles m−2	Spikelets panicle−1	Grain filling	Grain weight	Grain yield
Nitrogen (N)	15.50**	11.40**	6.90*	4.40*	24.70**
Variety (V)	9.90*	2.40	4.10	20.10**	27.60**
Density (D)	29.60**	30.20**	29.80**	11.20**	32.70**
N*V	119.40	4.30	0.82	0.30	0.17
N*D	15.60	1.80	0.52	0.52	13.27**
V*D	7.80*	9.80*	43.60**	5.30	14.10*
N*V*D	1.89	40.20	55.60	4.00	6.00

**significant at P<0.01

*significant at P<0.05; ns, non-significant.