Table 3 Accumulation and distribution of N of T2A-1 and MH63 under different nitrogen treatments at several growth periods (mg).

N treatment	Variety	FS				15 days after FS
N treatment	Variety	Aboveground	Stem	Leaf	Spike	Aboveground	Stem	Leaf	Spike
N1	T2A-1	36.7 a ± 1.0	11.7 b ± 0.7	19.6 a ± 0.1	5.4 a ± 0.4	39.4 a ± 2.0	16.8 a ± 1.6	14.1 a ± 0.2	8.5 a ± 0.9
N1	MH63	37.0 a ± 3.3	14.9 a ± 0.2	16.3 a ± 1.3	7.2 a ± 1.2	41.2 a ± 0.6	18.2 a ± 1.07	12.6 a ± 0.9	10.4 a ± 0.4
N2	T2A-1	39.6 a ± 0.4	14.3 a ± 0.3	20.7 a ± 0.5	4.6 a ± 0.5	46.4 a ± 1.9	19.2 a ± 1.36	17.7 a ± 1.5	9.5 b ± 0.4
N2	MH63	45.4 a ± 2.3	16.2 a ± 0.7	21.9 a ± 1.0	7.4 a ± 1.1	49.9 a ± 2.2	21.9 a ± 1.6	14.9 a ± 0.1	13.2 a ± 0.7
N3	T2A-1	50.6 a ± 1.1	16.5 a ± 0.2	26.4 a ± 0.9	7.8 b ± 0.4	52.1 a ± 3.4	21.3 a ± 1.1	18.9 a ± 0.5	11.3 b ± 0.5
N3	MH63	51.5 a ± 4.6	16.6 a ± 2.4	24.7 a ± 1.5	11.4 a ± 0.1	59.2 a ± 1.7	28.1 a ± 1.5	15.1 b ± 0.9	22.4 a ± 1.5
N4	T2A-1	70.6 a ± 1.5	24.0 a ± 2.4	39.1 a ± 0.6	7.5 b ± 0.5	71.9 a ± 5.6	31.7 a ± 1.07	23.2 a ± 4.4	17.0 b ± 0.5
N4	MH63	72.4 a ± 1.1	25.4 a ± 1.1	36.2 a ± 1.4	10.8 a ± 0.8	73.5 a ± 24	28.1 a ± 1.46	23.4 a ± 1.5	24.5 a ± 0.9
Mean	T2A-1	49.4	16.6	26.5	6.3	52.5	22.3	18.5	11.6
Mean	MH63	51.6	18.3	24.8	9.2	56.0	24.1	16.5	17.6
Analysis of variance
N level		**	**	**	**	**	**	**	**
Genotype		NS	NS	*	**	*	NS	NS	**
N level × Genotype		NS	NS	NS	NS	NS	NS	NS	**

Data are presented as the means ± standard deviation (SD, n = 3). Lowercase letters indicate SNK variance between groups under same nitrogen treatments at same sampling time. The * indicate a significant source of variance at P = 0.05, while ** at P = 0.01. NS means no significance. N1: 0.2 g N pot⁻¹; N2: 0.35 g N pot⁻¹; N3: 0.5 g N pot⁻¹; N4: 1 g N pot⁻¹. FS: flowering stage.

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