Table 3 Photosynthetic parameters determined in three lowland genotypes of C. quinoa subjected to HN and LN supplies.
From: Nitrogen physiology of contrasting genotypes of Chenopodium quinoa Willd. (Amaranthaceae)
Faro | UdeC9 | BO78 | G | N | G*N | ||||
|---|---|---|---|---|---|---|---|---|---|
HN | LN | HN | LN | HN | LN | ||||
Pn | 22 ± 3 (a) | 20 ± 4 (ab) | 21 ± 2 (a) | 12 ± 1 (bc) | 16 ± 2 (b) | 8 ± 2 (c) | <0.05 | <0.01 | ns |
gs | 0.2 ± 0.04 (ab) | 0.2 ± 0.05 (ab) | 0.3 ± 0.05 (a) | 0.16 ± 0.03 (b) | 0.2 ± 0.04 (ab) | 0.14 ± 0.04 (b) | <0.05 | ns | ns |
WUE i | 200 ± 44 (a) | 172 ± 32 (a) | 143 ± 25 (a) | 183 ± 38 (a) | 200 ± 76 (a) | 129 ± 29 (a) | ns | ns | ns |
A max | 41 ± 2 (a) | 36 ± 5 (a) | 40 ± 1 (a) | 25 ± 1 (b) | 34 ± 5 (ab) | 14 ± 2 (c) | <0.01 | <0.001 | ns |
VCmax | 55 ± 3 (a) | 53 ± 6 (a) | 55 ± 2 (a) | 42 ± 1 (bc) | 49 ± 2 (ab) | 35 ± 2 (c) | <0.005 | <0.005 | ns |
Jmax | 286 ± 20 (a) | 267 ± 44 (a) | 271 ± 23 (a) | 184 ± 7 (b) | 224 ± 11 (a) | 139 ± 11 (c) | <0.005 | <0.005 | ns |
Jmax:VCmax | 5.2 ± 0.1 (a) | 5.0 ± 0.3 (ab) | 4.9 ± 0.3 (ab) | 4.4 ± 0.1 (ab) | 4.6 ± 0.2 (ab) | 4.2 ± 0.1 (b) | <0.01 | ns | ns |
TPU | 20 ± 1 (a) | 19 ± 2 (a) | 19 ± 1 (a) | 15 ± 1 (b) | 17 ± 1 (ab) | 11 ± 1 (c) | <0.005 | <0.005 | ns |
CCP | 69 ± 8 (b) | 85 ± 9 (ab) | 79 ± 5 (b) | 82 ± 3 (b) | 71 ± 4 (b) | 110 ± 18 (a) | ns | <0.05 | ns |
