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Table 2
Results of backward stepwise regression with the best variable selected by analysis for each morphological trait.
| Response variable | Predictor variable, selected by backward stepwise regressions | β | Std Error β | t | p |
|---|---|---|---|---|---|
| Plant length |  |
−0.64 | 0.14 | −4.60 | <0.001 |
| Number of shoots | pH | −0.38 | 0.16 | −2.29 | 0.031 |
| Number of roots | Conductivity | 0.55 | 0.15 | 3.60 | 0.001 |
| Leaf area |  |
−0.70 | 0.13 | −5.37 | <0.001 |
| Plant dry mass | Temperature | 0.77 | 0.11 | 6.56 | <0.001 |
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