| Mean(LRD P) IAA | root mass density | auxin treatment | mass density unit | 190 | Auxin (IAA) treatment |
| Mean(LRD P) CK | root mass density | cytokinin treatment | mass density unit | 192 | Cytokinin (CK) treatment |
| Mean(LRD P) C | root mass density | laboratory study | mass density unit | 190 | Control (C) treatment |
| Mean(LRD P) ABA | root mass density | abscisic acid treatment | mass density unit | 191 | Abscisic acid (ABA) treatment |
| Mean(LR.no) IAA | lateral root number | auxin treatment | count unit | 190 | Auxin (IAA) treatment |
| Mean(LR.no) CK | lateral root number | cytokinin treatment | count unit | 192 | Cytokinin (CK) treatment |
| Mean(LR.no) C | lateral root number | laboratory study | count unit | 190 | Control (C) treatment |
| Mean(LR.no) ABA | lateral root number | abscisic acid treatment | count unit | 191 | Abscisic acid (ABA) treatment |
| Mature cell length | cell elongation trait | — | micrometer | 201 | Mejion |
| MT GH | reproductive growth time | growth chamber study | day | 147 | Atwell et. al, Nature 2010 |
| MS-mean Total length day005 | root length | plant growth medium | micron pixel | 227 | Root growth rates under nutrient deficiency |
| MS-mean Total length day004 | root length | plant growth medium | micron pixel | 226 | Root growth rates under nutrient deficiency |
| MS-mean Total length day003 | root length | plant growth medium | micron pixel | 226 | Root growth rates under nutrient deficiency |
| MRVL75 | root morphology trait | vertical agar growth medium | length unit | 328 | Salt induced changes in Root System Architecture |
| MRVL125 | root morphology trait | vertical agar growth medium | ratio | 328 | Salt induced changes in Root System Architecture |
| MRVL0 | root morphology trait | vertical agar growth medium | length unit | 328 | Salt induced changes in Root System Architecture |
| MRVA75 | root morphology trait | vertical agar growth medium | degree | 328 | Salt induced changes in Root System Architecture |
| MRVA125 | root morphology trait | vertical agar growth medium | degree | 328 | Salt induced changes in Root System Architecture |
| MRVA0 | root morphology trait | vertical agar growth medium | degree | 328 | Salt induced changes in Root System Architecture |
| MRLpTRS75 | root morphology trait | vertical agar growth medium | ratio | 328 | Salt induced changes in Root System Architecture |