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Levels of leaf titratable acidity (AM H+ equivalents − PM H+ equivalents to pH 7.0) across well-watered (D1), drought (D7) and re-watered (D9) time points in 24 genotypes of Yucca gloriosa. If any given value is not significantly different from 0 (no acid accumulation), N.S. is shown above the box. Significant differences between time points within a genotype are indicated by brackets above the boxes.
