Table 4. Overview of the methodology to transform RootScan data into GRANAR parameters.
| GRANAR Input | Transformation | RootScan Output |
|---|---|---|
| Stele cell diameter (mm) Pericle cell diameter (mm) |  |
– |
| Stele diameter (mm) | = 
|
Stele area (mm2) |
| Number of metaxylem element (−) | = 
|
Stele area (mm2) |
| Xylem diameter (mm) |  |
Xylem area (mm2) |
| Number of cortex layer (−) |  |
Number of cortex layer |
| Cortex cell diameter (mm) Endodermis cell diameter Exodermis cell diameter |
 |
Cross section area (mm2) |
| Epidermis cell diameter (mm) |  |
– |
| Aerenchyma proportion (%) | – | Aerenchyma proportion (%) |