Table 1.

Mean values ± standard deviations and p-values of differences in means in control (CO) and 10-day water withholding treatment (WW) for GPOD (AU/g FW) PROT (mg/g FW), TBARS (ng/g FW), proline (nmol/mg FW), H₂O₂ (nmol/g FW), and CWC (%) followed by variance components and repeatabilities ± standard errors of repeatabilities and the results of K-means clustering analysis with cluster means of trait fold-change and the accompanying p-values of pairwise t-tests between cluster means.

	GPOD	PROT	TBARS	Proline	H2O2	CWC
Treatment effects
CO	0.94 ± 0.23	0.72 ± 0.21	4.14 ± 1.18	1.85 ± 0.66	1.66 ± 0.55	93.52 ± 0.85
WW	1.00 ± 0.29	0.67 ± 0.25	6.15 ± 2.00	5.33 ± 3.55	2.05 ± 0.71	90.92 ± 1.67
p-value	0.00808	0.362	<0.001	<0.001	<0.001	<0.001
Variance components and repeatabilities
${\sigma }_{\text{G}}^2$	0.036	1.404	1.181	1.068	0.269	0.862
${\sigma }_{\text{GxT}}^2$	0.028	0.998	1.461	5.360	0.117	0.627
${\sigma }_{\text{e}}^2$	0.014	0.467	0.193	0.263	0.049	0.781
R2	0.68 ± 0.06	0.71 ± 0.06	0.61 ± 0.08	0.28 ± 0.14	0.80 ± 0.04	0.66 ± 0.07
K-means cluster analysis
Cluster 1 (n = 65)	0.010 ± 0.22	−0.002 ± 0.421	0.321 ± 0.265	0.982 ± 0.691	0.188 ± 0.299	−0.312 ± 0.152
Cluster 2 (n = 44)	0.195 ± 0.37	−0.107 ± 0.324	0.863 ± 0.517	3.400 ± 2.475	0.407 ± 0.353	−0.545 ± 0.243
p	0.003964	0.1453	<0.001	<0.001	0.001127	<0.001