Genetic Gain in Wheat Grain Yield and Nitrogen Use Efficiency at Different Nitrogen Levels in an Irrigated Hot Environment

Table 4

Nitrogen use efficiency (NUE) of 12 bread wheat genotypes grown in season 2006/07 and 2007/08 under different N levels at Gezira Research Station Farm, Wad Medani, Sudan.

Genotype	Nitrogen use efficiency (kg grain/kg N applied)
	N43	N86	N129	Mean
Beladi 60	50.7	29.7	21.1	33.8
Giza 155 71	56.9	31.7	23.2	37.2
Condor 78	59.5	29.8	24.7	38.0
Debeira 82	62.0	35.2	24.1	40.4
Wadi Elneel 87	66.8	36.6	24.6	42.7
Elnielain 90	63.5	38.5	29.3	43.8
Nesser 96	60.5	36.0	22.4	39.7
Argine 96	53.1	36.8	26.1	38.7
Imam 00	58.4	33.6	26.0	39.3
Tagana 04	63.1	34.6	21.9	39.9
Khalifa 04	64.2	36.1	28.7	43.0
Bohaine 06	58.7	36.1	27.0	40.6
Mean
SE ± for:
N level (N)			0.59
Genotype (G)			1.1
N × G			1.91∗

Significant at ; significant at .