Table 3 ANOVA, genetic variance (GV) and broad sense heritability (H²) for P use efficiency related traits recorded in three subpopulations (C1, C2 and C3), obtained from 82 bread wheat accessions, grown under sufficient (42.2 mg P kg⁻¹ soil) and low (2.67 mg P kg⁻¹ soil) phosphorus soil. The pooled data over two years (2016 and 2017) was used for analysis. Abbreviations: TBM, total biomass plant⁻¹; GWP, grain weight plant⁻¹; SPP, shoot P percentage; SPU, shoot P uptake; GPP, grain P percentage; GPU, grain P uptake; TPU, total P uptake; PHI, P harvest index; PUE, P use efficiency. * P < .05; P < .01, * P < .001; n.s., non-significant; P – phosphorus; G – accession; PXG – interaction between P and G.

Traits	C1 Subpopulation					C2 Subpopulation					C3 Subpopulation
	F- value			GV	H²(%)	F- value			GV	H²(%)	F- value			GV	H²(%)
	P	G	PXG			P	G	PXG	GV	H²(%)	P	G	PXG	GV	H²(%)
TBM	853.54***	35.42 ***	8.61***	15.43	92.23	586.20***	69.81***	12.22***	25.87	95.92	1707.82***	44.76***	8.36***	16.20	93.64
GWP	964.43 ***	7.72***	5.79***	0.93	70.00	453.37***	182.87***	25.37***	14.51	98.37	1663.03***	40.32***	6.17***	4.53	93.79
SPP	2467.81***	12.10***	7.67***	0.00	75.00	1634.06***	76.70***	35.42***	0.01	95.73	5498.65***	22.77***	18.74***	0.00	88.24
SPU	2282.19***	29.21***	9.99***	86.33	90.56	1237.34***	40.78***	14.34***	179.00	92.75	5169.07***	23.98***	13.98***	47.00	88.68
GPP	783.97***	12.85***	8.86***	0.00	79.44	663.41***	54.30***	15.89***	0.00	94.66	2076.22***	17.46***	5.44***	0.00	81.82
GPU	1971.36***	10.10***	4.63***	19.67	76.62	1026.19***	83.36***	20.77***	105.33	96.34	3348.31***	25.53***	4.43***	53.00	88.33
TPU	3812.12***	14.46***	5.56***	78.00	82.11	2542.90***	18.75***	19.12***	86.00	86.00	8203.73***	17.01***	8.37***	69.00	84.15
PHI	532.56***	38.37***	8.05***	92.00	92.93	170.27***	67.95***	2.81*	305.67	95.71	822.65***	28.04***	7.27***	76.00	90.48
PUE	1692.44***	26.05***	7.73***	7.97	88.85	574.20***	84.59***	5.04***	43.07	96.63	4214.10***	28.70***	8.73***	7.33	88.00

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