Table 4.
Variations in seedling characteristics within and between cold tolerance (CT) and cold susceptible (CS) groups pooled from a diverse sorghum population planted across three planting dates in West Texas.
| Planting dates | FGP (%) | VGR | SBM (g) | SCC (µmol m−2) | ||||
|---|---|---|---|---|---|---|---|---|
| CT | CS | CT | CS | CT | CS | CT | CS | |
| Early | 73* B | 43 C | 2.6* A | 3.6 A | 0.36* C | 0.21 C | 230* C | 212 C |
| Mid | 84* A | 73 B | 2.4* A | 2.9 B | 3.86* B | 3.69 B | 412 ns B | 408 B |
| Standard | 83 ns A | 82 A | 1.7* B | 2.0 C | 6.06* A | 5.31 A | 508* A | 482 A |
| Mean | 80 | 68 | 2.3 | 2.8 | 3.5 | 3.4 | 387 | 384 |
| SE | 0.75 | 1.57 | 0.04 | 0.06 | 0.14 | .15 | 7.31 | 8.30 |
FGP final germination percent, VGR early vigor rating, SBM 30DAP dry seedling biomass, SCC 30DAP chlorophyll content; ns: non-significant.
*Significant (p ≤ 0.05) difference for assessed parameter between groups within planting date.
ABC…: indicates significant difference (p ≤ 0.05) for assessed parameter within a group across planting dates.