| Se82 | selenium concentration | growth chamber study | concentration unit | 2701 | Ion Concentration |
| ScalingExponent | shoot system growth and development trait | growth chamber study | dimensionless unit | 451 | Adaptive diversification of growth allometry in the plant Arabidopsis thaliana |
| SDV | days to flowering trait | growth chamber study | day | 159 | Atwell et. al, Nature 2010 |
| SD | days to flowering trait | growth chamber study | day | 162 | Atwell et. al, Nature 2010 |
| S34 | sulfur concentration | growth chamber study | concentration unit | 93 | Atwell et. al, Nature 2010 |
| S34 | sulfur concentration | growth chamber study | concentration unit | 2699 | Ion Concentration |
| Rosette diameter Mine | plant growth and development trait | green house study | millimeter | 207 | Pb Mine soil |
| Rosette Erect 22 | rolled leaf | growth chamber study | dimensionless unit | 176 | Atwell et. al, Nature 2010 |
| Root length (Day 5) | root length | limited iron regimen | millimeter | 131 | Satbhai et. al. Nature Communications 2017 |
| Root length (Day 4) | root length | limited iron regimen | millimeter | 126 | Satbhai et. al. Nature Communications 2017 |
| Root length (Day 3) | root length | limited iron regimen | millimeter | 132 | Satbhai et. al. Nature Communications 2017 |
| Root length (Day 2) | root length | limited iron regimen | millimeter | 134 | Satbhai et. al. Nature Communications 2017 |
| Root length (Day 1) | root length | limited iron regimen | millimeter | 133 | Satbhai et. al. Nature Communications 2017 |
| Rb85 | lodicule morphology trait | growth chamber study | concentration unit | 2702 | Ion Concentration |
| Raffinose 32C | carbohydrate content | growth chamber study | concentration unit | 250 | Raffinose (22°C and 32°C) |
| Raffinose 22C | carbohydrate content | growth chamber study | concentration unit | 250 | Raffinose (22°C and 32°C) |
| RP GH | reproductive growth time | growth chamber study | day | 147 | Atwell et. al, Nature 2010 |
| RL | leaf number | growth chamber study | count unit | 850 | 1001 Genomes & easyGWAS |
| RGR Zn norm | relative root length | plant growth medium | ratio | 227 | Root growth rates under nutrient deficiency |
| RGR Zn | relative root length | plant growth medium | rate unit | 227 | Root growth rates under nutrient deficiency |
