Table 1.

Effect of transgenerational water stress on yield components measured at harvest for two durum wheat genotypes. Means ± SE for n = 10 are shown for each trait. Different letters (a, b, c) denote statistically significant differences among treatment groups within each genotype, using least significant difference (LSD) when P < 0.05. The treatment groups are: AtCC (DBA Artemis control group parents, progeny treated with control), AtCW (DBA Artemis control group parents, progeny treated with water-deficit stress), AtWC (DBA Artemis water-deficit stress group parents, progeny treated with control), AtWW (DBA Artemis water-deficit stress group parents, progeny treated with water-deficit stress); AuCC (DBA Aurora control group parents, progeny treated with control), AuCW (DBA Aurora control group parents, progeny treated with water-deficit stress), AuWC (DBA Aurora water-deficit stress group parents, progeny treated with control), AuWW (DBA Aurora water-deficit stress group parents, progeny treated with water-deficit stress).

	Biomass per plant (g)	Grain weight per plant (g)	Grain number per plant	Harvest index	1000-grain weight (g)
AtCC	24.51 ± 0.20 a	12.49 ± 0.13 a	292.50 ± 7.28 a	0.510 ± 0.005 b	42.93 ± 1.08 c
AtCW	20.12 ± 0.41 b	10.24 ± 0.31 b	214.80 ± 10.85 b	0.509 ± 0.010 b	48.34 ± 1.62 b
AtWC	23.52 ± 0.27 a	12.58 ± 0.24 a	269.75 ± 14.59 a	0.535 ± 0.007 a	47.34 ± 1.86 bc
AtWW	20.36 ± 0.47 b	10.95 ± 0.38 b	207.00 ± 10.84 b	0.537 ± 0.008 a	53.44 ± 1.66 a
F pr	< 0.001	< 0.001	< 0.001	0.021	< 0.001
LSD	1.034	0.805	31.260	0.023	4.477
AuCC	22.96 ± 0.24 a	12.60 ± 0.31 a	247.10 ± 9.08 a	0.549 ± 0.010	51.24 ± 0.83 ab
AuCW	19.94 ± 0.60 b	11.04 ± 0.39 b	203.90 ± 13.88 b	0.554 ± 0.012	55.42 ± 2.20 a
AuWC	23.23 ± 0.40 a	12.92 ± 0.39 a	264.20 ± 10.57 a	0.555 ± 0.010	49.16 ± 1.08 b
AuWW	19.17 ± 0.32 b	10.39 ± 0.41 b	190.60 ± 8.93 b	0.541 ± 0.015	55.03 ± 1.95 a
F pr	< 0.001	< 0.001	< 0.001	0.833	0.025
LSD	1.19	1.083	30.98	n.a	4.645