| RGR P norm | relative root length | plant growth medium | ratio | 227 | Root growth rates under nutrient deficiency |
| RGR P Zn norm | relative root length | plant growth medium | ratio | 227 | Root growth rates under nutrient deficiency |
| RGR P Zn | relative root length | plant growth medium | rate unit | 227 | Root growth rates under nutrient deficiency |
| RGR P Fe norm | relative root length | plant growth medium | ratio | 227 | Root growth rates under nutrient deficiency |
| RGR P Fe | relative root length | plant growth medium | rate unit | 227 | Root growth rates under nutrient deficiency |
| RGR P | relative root length | plant growth medium | rate unit | 227 | Root growth rates under nutrient deficiency |
| RGR MS | relative root length | plant growth medium | rate unit | 227 | Root growth rates under nutrient deficiency |
| RGR Fe | relative root length | plant growth medium | rate unit | 227 | Root growth rates under nutrient deficiency |
| RGR | shoot system growth and development trait | growth chamber study | speed/velocity unit | 445 | Adaptive diversification of growth allometry in the plant Arabidopsis thaliana |
| RGE Fe norm | relative root length | plant growth medium | ratio | 227 | Root growth rates under nutrient deficiency |
| RBN | primary branch number | growth chamber study | count unit | 674 | 1001 Genomes & easyGWAS |
| Polyprenol | metabolite content trait | growth chamber study | microgram | 114 | Isoprenoid concentration |
| Plastoquinone | metabolite content trait | growth chamber study | microgram | 116 | Isoprenoid concentration |
| PZ-mean Total length day005 | root length | plant growth medium | micron pixel | 227 | Root growth rates under nutrient deficiency |
| PZ-mean Total length day004 | root length | plant growth medium | micron pixel | 227 | Root growth rates under nutrient deficiency |
| PZ-mean Total length day003 | root length | plant growth medium | micron pixel | 226 | Root growth rates under nutrient deficiency |
| PF-mean Total length day005 | root length | plant growth medium | micron pixel | 227 | Root growth rates under nutrient deficiency |
| PF-mean Total length day004 | root length | plant growth medium | micron pixel | 227 | Root growth rates under nutrient deficiency |
| PF-mean Total length day003 | root length | plant growth medium | micron pixel | 221 | Root growth rates under nutrient deficiency |
| PC3sc75 | root morphology trait | vertical agar growth medium | dimensionless unit | 326 | Salt induced changes in Root System Architecture |
