Table 10.
Yield penalties (expressed in percent grain yield reduction) for sorghum lines with different background source of cold tolerance and susceptibility evaluated at three planting dates in West Texas.
| Source of tolerance | Yield penalties (%) | ||
|---|---|---|---|
| Early versus Standard | Early versus Mid | Mid versus Standard | |
| Ethiopian Introgressions | 27 C | 11 C | 17 A |
| Chinese RILs | 37 B | 22 B | 19 A |
| BTx642 | 41 B | 40 A | 01 C |
| Chinese Hybrids | 44 B | 29 B | 22 A |
| Pioneer 84P80 | 43 B | 36 AB | 10 B |
| Susceptible checks | 57 A | 40 A | 20 A |
ABC…: indicates significant difference (p ≤ 0.05) between sources for a given comparison of planting dates.