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Multivariate principal component analysis (PCA) of 14 component traits- membrane injury (MI), proline, relative water content (RWC), superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR), plant height (PH), spike length (SL), grain weight (GW), tolerance index1 (TI1), tolerance index 2 (TI2), tolerance index 3 (TI3) and cumulative tolerance index (CTI)) under water stress
