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Root morphological characteristics quantified in this study.
| Abbreviation | Description |
|---|---|
| PRS | Primary root length |
| TRS | Total root length |
| 1st LRS | Sum of path length of the first-order LRs (emerging form the PR) |
| 1st order LR no. | Number of the first-order LRs |
| 1st LRP | Mean LR path length of the first-order LRs |
| 2nd LRS | Sum of path length of the second-order LRs (emerging from first-order LRs) |
| 2nd order LR no. | Number of the second-order LRs |
| 2nd LRP | Mean LR path length of the second-order LRs |
