Table 1.

Grain yield and thousand-grain weight (TGW) of 20 wheat genotypes fertilized by two nitrogen levels (High and Low). Means are followed by standard error (n = 8).

Genotypes	Grain Yield (g/Plant)		TGW (g)
	High N	Low N	High N	Low N
18	9.43 a ± 0.58	8.22 ab ± 0.28	58.63 a ± 1.88	56.50 a ± 2.49
4	9.09 ab ± 0.57	6.57 defg ± 0.49	50.75 cd ± 1.69	47.14 e ± 0.61
6	8.68 abc ± 0.46	7.85 abc ± 0.54	57.25 ab ± 0.54	51.38 cd ± 2.43
5	8.40 abcd ± 0.45	6.94 cdef ± 0.52	48.75 de ± 0.53	47.69 de ± 1.23
8	8.33 abcd ± 0.48	7.72 abcd ± 0.47	51.06 cd ± 1.02	52.50 bc ± 1.05
15	7.98 abcdef ± 0.82	8.27 a ± 0.50	51.00 cd ± 1.67	51.81 bc ± 0.91
14	7.96 bcde ± 0.42	6.92 cdef ± 0.34	46.56 efg ± 1.34	48.94 cde ± 1.52
10	7.41 cdefg ± 0.31	7.36 abcdef ± 0.39	52.88 c ± 1.00	52.13 bc ± 1.42
1	7.31 cdefg ± 0.34	6.37 efgh ± 0.55	46.38 efg ± 1.41	42.88 fg ± 1.83
13	7.17 defg ± 0.36	7.55 abcde ± 0.45	53.50 bc ± 0.73	50.00 cde ± 1.33
2	7.16 defg ± 0.39	6.90 cdef ± 0.40	43.56 g ± 1.13	42.44 g ± 1.45
12	7.06 defgh ± 0.45	6.23 fgh ± 0.45	54.25 bc ± 1.88	50.38 cde ± 1.22
19	6.86 efgh ± 0.52	7.05 bcdef ± 0.38	43.56 g ± 1.02	50.63 cde ± 0.69
7	6.83 efgh ± 0.75	5.19 h ± 0.35	43.94 fg ± 1.52	52.06 bc ± 0.65
11	6.78 efgh ± 0.64	6.52 efg ± 0.44	58.56 a ± 1.16	55.69 ab ± 1.57
20	6.70 efgh ± 0.30	7.77 abcd ± 0.33	47.56 def ± 1.48	50.38 cde ± 0.91
3	6.53 efgh ± 0.37	6.28 fgh ± 0.49	44.06 fg ± 1.59	42.13 g ± 1.26
16	6.43 fgh ± 0.53	6.17 fgh ± 0.43	50.69 cd ± 0.87	46.69 ef ± 0.97
9	6.27 gh ± 0.53	5.40 gh ± 0.34	48.81 de ± 1.98	49.19 cde ± 0.64
17	5.74 h ± 0.26	7.37 abcdef ± 0.38	54.19 bc ± 2.22	52.88 abc ± 1.97
Two-way ANOVA
p-value (G effect)	<0.001		<0.001
p-value (T effect)	0.03		0.34
p-value (G × T)	0.75		0.40

Grey shading indicates the genotypes that were selected for grain quality analyses. Within each treatment, letters indicate significance differences between genotypes at p < 0.5. Values in bold indicate significance (p < 0.05). G: Genotype, T: Treatment.