Table 3.
Mean of plant N in the initial seed, total plant N at tuber initiation stage (H1), flowering stage (H2) and final harvest (H3), mean N in the above-ground biomass (NAg) at H1–H3, mean N in the tuber biomass (NTuber) at H2 and at H3; and the mean plant N content during the entire growth period (N') in the potato lines grown in the field (2015) and greenhouse experiment (2014).
| Field | Greenhouse | |||||
|---|---|---|---|---|---|---|
| Dinamo | T-2012 | Kuras | T-8003 | Dinamo | T-2012 | |
| N in initial seed (NS) | 0.10 A* (0.010)** | 0.05 B (0.002) | 0.07 (0.001) | 0.07 (0.001) | 0.07 (0.002) | 0.06 (0.001) |
| Total plant N at H1 | 1.65 (0.25) | 1.04 (0.18) | 0.50 a (0.07) | 0.04 ab (0.09) | 0.32 ab (0.03) | 0.20 b (0.04) |
| Total plant N at H2 | 3.97 (0.64) | 2.53 (0.37) | 1.66 (0.08) | 1.62 (0.05) | 1.77 (0.08) | 1.78 (0.07) |
| Total plant N at H3 | 3.56 (0.25) | 4.33 (0.49) | 4.37 b (0.34) | 5.03 ab (0.35) | 5.12 ab (0.58) | 6.51 a (0.73) |
| NAg at H1 | 1.65 (0.25) | 1.05 (0.18) | 0.49 a (0.06) | 0.43 ab (0.09) | 0.31 ab (0.03) | 0.20 b (0.04) |
| NAg at H2 | 1.63 (0.31) | 1.21 (0.20) | 1.37 b (0.07) | 1.47 ab (0.05) | 1.59 a (0.09) | 1.66 a (0.07) |
| NAg at H3 | 0.45 B (0.07) | 0.50 A (0.07) | 1.50 c (0.05) | 1.70 bc (0.15) | 1.73 b (0.06) | 2.22 a (0.16) |
| NTuber at H2 | 2.33 A (0.33) | 1.32 B (0.25) | 0.28 a (0.02) | 0.14 b (0.02) | 0.17 b (0.02) | 0.12 b (0.01) |
| NTuber at H3 | 3.10 (0.21) | 3.83 (0.44) | 2.87 (0.31) | 3.33 (0.29) | 3.38 (0.59) | 4.28 (0.65) |
| Mean plant N (N') | 3.34 (0.32) | 2.80 (0.31) | 1.54 (0.03) | 1.40 (0.08) | 1.46 (0.05) | 1.52 (0.05) |
The unit for all the values is g plant−1.
*
Results of Tukey HSD test at α = 0.05.
**
Standard error (n = 5 in greenhouse; n = 10 in field).
Different letters indicate statistically significant differences between groups.