Table I. List of measured and derived phenotypic traits broadly classified into five categories (A–E) with trait acronyms and units.
| Trait | Trait Acronym | Unit | Phenotypic Plasticity Acronym |
|---|---|---|---|
| (A) Shoot morphological traits | |||
| Plant height | PHT | cm | rPHT |
| Tiller number | TN | plant−1 | rTN |
| Total leaf area | TLA | m2 plant−1 | rTLA |
| Specific leaf area | SLA | m2 g−1 | rSLA |
| (B) Physiological traits | |||
| Cumulative water transpiration | CWT | kg plant−1 | rCWT |
| Water use efficiency | WUE | g kg−1 | rWUE |
| (C) Root morphological traits | |||
| Total root length | TRL | m plant−1 | rTRL |
| Root length with diameter (mm) class | |||
| RL_0-0.5 | RL005 | m plant−1 | rRL005 |
| RL_0.5-1.0 | RL0510 | m plant−1 | rRL0510 |
| RL_1.0-1.5 | RL1015 | m plant−1 | rRL1015 |
| RL_1.5-2.0 | RL1520 | m plant−1 | rRL1520 |
| RL_2.0-2.5 | RL2025 | m plant−1 | rRL2025 |
| RL_2.5-3.0 | RL2530 | m plant−1 | rRL2530 |
| RL_3.0-3.5 | RL3035 | m plant−1 | rRL3035 |
| RL_3.5 | RL35 | m plant−1 | rRL35 |
| Maximum root length | MRL | cm | rMRL |
| Surface area | SA | cm2 plant−1 | rSA |
| Root volume | RV | cm3 plant−1 | rRV |
| Average root thickness | ART | mm | rART |
| Specific root length | SRL | m g−1 | rSRL |
| Total root weight density | TRWD | g cm−3 | rTRWD |
| Root length per unit leaf area | RLLA | m m−2 | rRLLA |
| (D) Root anatomical traits | |||
| Root diameter | RD | μm | rRD |
| Cortex diameter | CD | μm | rCD |
| Stele diameter | SD | μm | rSD |
| Late metaxylem diameter | LMXD | μm | rLMXD |
| Late metaxylem number | LMXN | – | rLMXN |
| Stele diameter in proportion of root diameter | SD:RD | % | rSDRD |
| (E) Dry matter traits | |||
| Leaf weight | LW | g plant−1 | rLW |
| Stem weight | SW | g plant−1 | rSW |
| Root weight | RW | g plant−1 | rRW |
| Total weight | TW | g plant−1 | rTW |
| Root-shoot ratio | RS | – | rRS |
| Leaf weight ratio | LWR | – | rLWR |
| Stem weight ratio | SWR | – | rSWR |