Table 1. Effects of constant temperature (5, 10, 15, 20, and 25) and fluctuating temperature regimes (15/6, 20/10, and 25/15°C) on the germination characteristics of Campanula takesimana seeds under seven weeks of incubation.
| Temperature (°C) | Germination (%) | MGT (day) | TGI (% day-1) |
|---|---|---|---|
| 5 | 0.00 ± 0.00 c | 50.00 ± 0.00 a | 0.00 ± 0.00 c |
| 10 | 5.00 ± 3.00 c | 36.00 ± 8.08 a | 2.90 ± 1.74 c |
| 15 | 11.00 ± 1.91 c | 15.79 ± 1.78 b | 7.60 ± 1.10 c |
| 20 | 14.00 ± 4.76 bc | 15.41 ± 3.24 b | 10.56 ± 3.81 bc |
| 25 | 37.00 ± 4.43 a | 12.24 ± 0.87 b | 28.58 ± 3.29 a |
| 15/6 | 0.00 ± 0.00 c | 50.00 ± 0.00 a | 0.00 ± 0.00 c |
| 20/10 | 10.00 ± 2.00 c | 16.31 ± 1.50 b | 6.90 ± 1.32 c |
| 25/15 | 27.00 ± 5.26 ab | 11.28 ± 0.14 b | 21.42 ± 4.14 ab |
| Significance | *** | *** | *** |
MGT, Mean germination time; TGI, Timson germination index.
a,b,cMean separation within columns by Tukey’s HSD test (p ≤ 0.05).
*** Significant at p ≤ 0.001.