Table 2.
Chlorophyll quantification in three genotypes of C. quinoa at different N supplies.
| Pigments | Faro | UdeC9 | BO78 | G | N | G*N | |||
|---|---|---|---|---|---|---|---|---|---|
| HN | LN | HN | LN | HN | LN | ||||
| Chl a | 3.7 ± 0.9 (a) | 2.2 ± 0.5 (abc) | 3.3 ± 0.9 (ab) | 0.5 ± 0.1 (d) | 1.7 ± 0.3 (bc) | 1.0 ± 0.3 (c) | n.s | 0.005 | n.s |
| Chl b | 0.98 ± 0.25 (a) | 0.54 ± 0.14 (abc) | 0.75 ± 0.21 (ab) | 0.08 ± 0.03 (d) | 0.41 ± 0.09 (bc) | 0.21 ± 0.08 (c) | 0.05 | 0.005 | n.s |
| Chl a + b | 4.7 ± 1.2 (a) | 2.7 ± 0.6 (abc) | 4.0 ± 1.2 (ab) | 0.5 ± 0.2 (d) | 2.1 ± 0.4 (bc) | 1.2 ± 0.4 (c) | 0.05 | 0.005 | n.s |
| Chl a/b | 3.8 ± 0.1 (e) | 4.0 ± 0.1 (ed) | 4.4 ± 0.1 (c) | 5.9 ± 0.1 (a) | 4.2 ± 0.1 (cd) | 4.9 ± 0.1 (b) | 0.05 | 0.005 | n.s |
Leaf samples of three individual plants (n = 3) were collected from each genotype at midday. Absolute quantities of chlorophylls (Chl) are expressed in µmol g−1 per FW. Analysis using a two way ANOVA followed by Tukey test was used to compare genotypes (G) and nitrogen treatments (N). Different letters represent significant differences between G (Faro, UdeC9 and BO78) and N (HN (high nitrogen) and LN (low nitrogen)). The three last rows of the table show the significance levels (P) and interactions of the factors (G, N and G*N) for the parameters. n.s. = no significant.