Table 1 Description of measured traits in the tropical japonica rice panel grown in greenhouse
Trait | Abbreviation | Description | Unit |
|---|---|---|---|
Root length at 20 cm | RL20 | Total root length in the 0 to 20 cm layer | cm |
Root length at 40 cm | RL40 | Total root length in the 20 to 40 cm layer | cm |
Root length at 60 cm | RL60 | Total root length in the 40 to 60 cm layer | cm |
Root volume at 20 cm | RV20 | Total root volume in the 0 to 20 cm layer | cm3 |
Root volume at 40 cm | RV40 | Total root volume in the 20 to 40 cm layer | cm3 |
Root volume at 60 cm | RV60 | Total root volume in the 40 to 60 cm layer | cm3 |
Root diameter at 20 cm | RD20 | Average root diameter in the 0 to 20 cm layer | mm |
Root diameter at 40 cm | RD40 | Average root diameter in the 20 to 40 cm layer | mm |
Root diameter at 60 cm | RD60 | Average root diameter in the 40 to 60 cm layer | mm |
Fine root length at 20 cm | FRL20 | Total root length with diameter ≤ 0.5 mm at 20 cm | cm |
Fine root length at 40 cm | FRL40 | Total root length with diameter ≤ 0.5 mm at 40 cm | cm |
Fine root length at 60 cm | FRL60 | Total root length with diameter ≤ 0.5 mm at 60 cm | cm |
Thick root length at 20 cm | TRL20 | Total root length with 1.0 mm ≤ diameter ≤ 2.5 mm at 20 cm | cm |
Thick root length at 40 cm | TRL40 | Total root length with 1.0 mm ≤ diameter ≤ 2.5 mm at 40 cm | cm |
Thick root length at 60 cm | TRL60 | Total root length with 1.0 mm ≤ diameter ≤ 2.5 mm at 60 cm | cm |
Maintenance coefficient of fine roots between 20 and 40 cm | \( {\upalpha}_{FR{L}_{20\_40}} \) | Ratio between fine root length at 40 cm and fine root length at 20 cm | – |
Maintenance coefficient of fine roots between 40 and 60 cm | \( {\upalpha}_{FR{L}_{40\_60}} \) | Ratio between fine root length at 60 cm and fine root length at 40 cm | – |
Maintenance coefficient of thick roots between 20 and 40 cm | \( {\upalpha}_{TR{L}_{20\_40}} \) | Ratio between thick root length at 40 cm and thick root length at 20 cm | – |
Maintenance coefficient of thick roots between 40 and 60 cm | \( {\upalpha}_{TR{L}_{40\_60}} \) | Ratio between thick root length at 60 cm and thick root length at 40 cm | – |
Branching index at 20 cm | BI20 | Ratio between fine root length at 20 cm and thick root length at 20 cm | – |
Branching index at 40 cm | BI40 | Ratio between fine root length at 40 cm and thick root length at 40 cm | – |
Branching index at 60 cm | BI60 | Ratio between fine root length at 60 cm and thick root length at 60 cm | – |
Total root length | TOTRL | Sum of root lengths at 20 cm, 40 cm and 60 cm | cm |
Total root volume | TOTVOL | Sum of root volumes at 20 cm, 40 cm and 60 cm | cm3 |
Thick root diameter at 20 cm | DIAM _ TR20 | Thick root diameter at 20 cm | mm |
Thick root diameter at 40 cm | DIAM _ TR40 | Thick root diameter at 40 cm | mm |
Thick root diameter at 60 cm | DIAM _ TR60 | Thick root diameter at 60 cm | mm |
Thick root diameter reduction between 20 and 60 cm | \( {RED}_{T{R}_{20_{60}}} \) | Difference ratio between thick root diameters between 20 and 60 cm | % |
Shoot dry weight | SDW | Shoot biomass of one plant target | g plant-1 |