Table 2 Root Parameters for Which QTLs Were Detected
From: Rice Root Genetic Architecture: Meta-analysis from a Drought QTL Database
Trait name | Symbol | Nb populations | Nb QTLs | Reference of the studies in Table 1 |
|---|---|---|---|---|
Root number | RN | 6 | 41 | 1, 4, 8, 12, 14, 23, 24 |
Deep root number | DRN | 1 | 11 | 13 |
Lateral root number | LRN | 1 | 3 | 23 |
Penetrated root number | PRN | 4 | 25 | 1, 12, 14, 24 |
Seminal root length | SRL | 1 | 7 | 23 |
Maximum root length | MRL | 10 | 103 | 3, 4, 5, 6, 7, 9, 11, 13, 15, 18, 19, 20, 22 |
Lateral root length | LRL | 1 | 5 | 23 |
Penetrated root length | PRL | 2 | 7 | 1, 10, 21 |
Root thickness | RTHK | 7 | 123 | 2, 3, 4, 6, 7, 8, 9, 10, 11, 13, 19, 21 |
Penetrated root thickness | PRTHK | 3 | 37 | 1, 10, 21, 24 |
Root volume | RVOL | 2 | 18 | 4, 20 |
Root dry weight | RDW | 6 | 38 | 3, 4, 5, 8, 10, 18, 19, 21 |
Root dry weight in the 00–30 cm layer | RW0030 | 1 | 5 | 2 |
Root dry weight in the 30–60 cm layer | RW3060 | 1 | 3 | 2 |
Root dry weight in the 60–90 cm layer | RW6090 | 1 | 2 | 2 |
Root fresh weight | RFW | 1 | 4 | 8 |
Penetrated root dry weight | PRDW | 1 | 7 | 10, 21 |
Deep root weight | DRW | 5 | 42 | 3, 6, 7, 9, 13, 19 |
Deep root ratio | DRR | 3 | 31 | 6, 7, 20 |
Root to total biomass ratio | R/BIOM | 1 | 16 | 9 |
Root to shoot ratio | R/S | 4 | 30 | 2, 8, 13, 18 |
Deep root to shoot ratio | DR/S | 2 | 7 | 3, 19 |
Root dry weight per tiller | R/T | 1 | 14 | 2 |
Deep root weight per tiller | DR/T | 5 | 22 | 2, 3, 6, 7, 19 |
Root branching index | RBI | 1 | 3 | 5 |
Root growth rate in depth | RGRD | 1 | 14 | 20 |
Root growth rate in volume | RGRV | 1 | 19 | 20 |
Root penetration index | RPI | 5 | 35 | 1, 10, 12, 14, 21, 24 |
Root pulling force | RPF | 1 | 12 | 10, 21 |
Total number of root QTLs | 675 |