Table 1.
Root system architectural traits
| Acronym | Description (units) |
|---|---|
| RTLA | Total length of all roots (mm) |
| RTLS | Total length of seminal roots (mm) |
| RTLL | Total length of lateral roots (mm) |
| RSC | Number of seminal roots |
| RLC | Number of lateral roots |
| RMW | Maximum width of the root system (mm) |
| RMD | Maximum depth of the root system (mm) |
| RMWD | Width-depth ratio (RMW/RMD) |
| RCMX | Centre of mass of the root system, horizontal co-ordinate (mm) |
| RCMY | Centre of mass of the root system, vertical co-ordinate (mm) |
| RCH | Convex hull, area of the smallest convex polygon to enclose the root system (mm2) |
| RCHCX | Centre of mass of the convex hull, horizontal co-ordinate (mm) |
| RCHCY | Centre of mass of the convex hull, vertical co-ordinate (mm) |
| RAE1 | Angle of emergence between the outermost seminal roots measured at 30 px (degrees) |
| RAE2 | Angle of emergence between the second pair of seminal roots measured at 30 px (degrees) |
| RAE951 | Angle of emergence between the outermost seminal roots measured at 95 px (degrees) |
| RAE952 | Angle of emergence between the second pair of seminal roots measured at 95 px (degrees) |
| RAE251 | Angle of emergence between the outermost seminal roots measured at the first quartile of the total length (degrees) |
| RAE252 | Angle of emergence between the second pair of seminal roots measured at the first quartile of the total length (degrees) |
| RAE501 | Angle of emergence between the outermost seminal roots measured at the second quartile of the total length (degrees) |
| RAE502 | Angle of emergence between the second pair of seminal roots measured at the first quartile of the total length (degrees) |
| RAE751 | Angle of emergence between the outermost seminal roots measured at the third quartile of the total length (degrees) |
| RAE752 | Angle of emergence between the second pair of seminal roots measured at the third quartile of the total length (degrees) |
| RAE1001 | Angle of emergence between the outermost seminal roots measured at the root tip (degrees) |
| RAE1002 | Angle of emergence between the second pair of seminal roots measured at root tip (degrees) |