Table 1.
Total plant dry-matter accumulation rate during temperature and CO2 treatments at the tuber initiation or tuber bulking stage. CO2 treatments were Low and Elevated (Elev). The pooled standard error of the design (SE) are shown (n = 6); values labeled with different letters are significantly (p ≤ 0.05) different.
| Stage of Development | |||||
|---|---|---|---|---|---|
| Treatment | When Treatment Was Imposed | ||||
| temperature | atm CO2 | Tuber Initiation | Tuber Bulking | ||
| dry-matter accumulation rate | |||||
| °C | [CO2] | g DW plant−1 wk−1 | |||
| 25 | Elev | 24.3 | c | 37.7 | c |
| 25 | Low | 18.9 | cb | 28.0 | b |
| 35 | Elev | 15.8 | ba | 31.9 | cb |
| 35 | Low | 8.3 | a | 19.0 | a |
| SE | 1.6 | 1.8 | |||