Table 1.
Description of the 16 quantitative traits studied in the 23 radish germplasm.
| Trait | Abbreviation | Category | Description |
|---|---|---|---|
| Root length | RL | Morphology | Total length of roots traced within the 2D scanned image (cm). |
| Projected area | PA | Morphology | 2D area occupied by roots (cm²) |
| Surface area | SA | Morphology | Estimated total surface area of roots (cm²) |
| Root volume | RV | Morphology | Total estimated root volume (cm³) |
| Average diameter | AD | Morphology | Mean diameter of all root segments (cm) |
| Average projected area of link | APAL | Architecture | Mean projected area per segment (cm²) |
| Average surface area of link | ASAL | Architecture | Surface area per root segment (cm²) |
| Average diameter of link | ADL | Architecture | Mean diameter per segment (cm) |
| Number of root tips | NRT | Architecture | Total number of terminal root ends (count) |
| Forks | - | Architecture | Branching points where roots split (count) |
| Number of crossings | NOC | Architecture | Points where roots overlap in 2D (count) |
| Average length of link | ALOL | Architecture | Mean length between forks/tips (cm) |
| Average branching angle of link | ABAL | Architecture | Mean angle at which lateral roots emerge (°) |
| Root fresh weight | RFW | Fresh biomass | Total mean weight of the harvested root (g) |
| Shoot fresh weight | SFW | Fresh biomass | Total mean weight of the harvested shoot (g) |
| Root- Shoot fresh weight | RSFW | Fresh biomass | Root fresh weight to shoot fresh weight (ratio) |