| Cu65 | copper concentration | growth chamber study | concentration unit | 93 | Atwell et. al, Nature 2010 |
| Co59 | cobalt concentration | growth chamber study | concentration unit | 2698 | Ion Concentration |
| Co59 | cobalt concentration | growth chamber study | concentration unit | 93 | Atwell et. al, Nature 2010 |
| Chlorosis 22 | leaf chlorosis | growth chamber study | dimensionless unit | 176 | Atwell et. al, Nature 2010 |
| Chlorosis 16 | leaf chlorosis | growth chamber study | dimensionless unit | 176 | Atwell et. al, Nature 2010 |
| Chlorosis 10 | leaf chlorosis | growth chamber study | dimensionless unit | 177 | Atwell et. al, Nature 2010 |
| Chlorophyll | metabolite content trait | growth chamber study | microgram | 117 | Isoprenoid concentration |
| Cd114 | cadmium concentration | growth chamber study | concentration unit | 93 | Atwell et. al, Nature 2010 |
| Cd111 | cadmium concentration | growth chamber study | concentration unit | 2701 | Ion Concentration |
| Carotenoid | metabolite content trait | growth chamber study | microgram | 117 | Isoprenoid concentration |
| Callose content in trichomes | trichome morphology trait | growth chamber study | dimensionless unit | 302 | trichome_development_epidermis_metal_traits |
| Ca43 | calcium concentration | growth chamber study | concentration unit | 93 | Atwell et. al, Nature 2010 |
| Ca43 | calcium concentration | growth chamber study | concentration unit | 2702 | Ion Concentration |
| CL | cauline axillary branch number | growth chamber study | count unit | 904 | 1001 Genomes & easyGWAS |
| CDT (Controlled seed Deterioration Treatment) | seed longevity | warm/hot air temperature regimen | ratio | 267 | Seed longevity (Renard et. al., 2020) |
| Bs CFU2 | bacterial disease resistance | growth chamber study | colony forming unit | 175 | Atwell et. al, Nature 2010 |
| Bs | bacterial disease resistance | growth chamber study | count unit | 175 | Atwell et. al, Nature 2010 |
| Branched75 | root morphology trait | vertical agar growth medium | length unit | 328 | Salt induced changes in Root System Architecture |
| Branched125 | root morphology trait | vertical agar growth medium | length unit | 328 | Salt induced changes in Root System Architecture |
| Branched0 | root morphology trait | vertical agar growth medium | length unit | 328 | Salt induced changes in Root System Architecture |