Nitrogen uptake and remobilization from pre- and post-anthesis stages contribute towards grain yield and grain protein concentration in wheat grown in limited nitrogen conditions

Table 1 Mean values and ANOVA of phenotypic traits of 195 wheat NAM RILs grown under low N soil two seasons (2016–17 and 2017–18)

	Yield (kg ha⁻¹)	TW (g)	AGNa (kg ha⁻¹)	AGNh (kg ha⁻¹)	AGNpa (kg ha⁻¹)	GPC (%)	NRE	NNI	HI	NHI
2016–17
P × Cim	3809.72	34.90	109.34	132.9	23.56	12.12	0.52	0.89	0.31	0.61
P × Baj	3902.19	31.84	112.48	142.30	29.82	13.21	0.52	0.88	0.30	0.62
P × Wat	2466.14	26.81	86.01	115.44	29.43	15.08	0.40	0.72	0.23	0.56
P × Wya	1745.02	26.46	68.62	90.00	21.42	13.79	0.29	0.65	0.18	0.47
2017–18
P × Cim	3916.73	36.94	120.95	133.66	12.71	12.79	0.69	0.75	0.37	0.71
P × Baj	3025.63	33.11	104.50	114.43	9.93	13.98	0.68	0.64	0.31	0.70
P × Wat	3209.47	28.63	123.08	141.26	18.18	14.92	0.54	0.70	0.27	0.60
P × Wya	2643.33	27.24	107.76	120.58	12.82	14.76	0.49	0.63	0.23	0.54
Pooled
P × Cim	3863.22	35.92	115.40	133.28	18.13	12.50	0.60	0.82	0.34	0.66
P × Baj	3463.91	32.47	108.49	128.37	19.87	13.60	0.60	0.76	0.31	0.66
P × Wat	2837.80	27.72	104.55	128.35	23.80	15.00	0.47	0.71	0.25	0.58
P × Wya	2194.18	26.85	88.19	105.31	17.12	14.27	0.39	0.64	0.21	0.50
P value (CD 5%)
G (df = 3)	ns	1.80	ns	ns	ns	1.80	0.08	ns	0.06	0.08
Y (df = 1)	ns	7.20	ns	ns	63.14	ns	0.32	ns	0.27	0.32

TW test weight, AGNa aboveground N uptake at anthesis, AGNh aboveground N uptake at harvest, AGNpa aboveground N uptake post-anthesis, GPC grain protein concentration, NRE nitrogen remobilization efficiency, NNI nitrogen nutrition index, HI harvest index, NHI nitrogen harvest index

ISSN: 2662-4044