Table 3.
Pearson’s correlation coefficients among physiological and biochemical parameters from Eugenia uniflora ‘Etna fire’ exposed to water stress.
| A | Gs | E | FV/Fm | RWC | CAT | GPX | MDA | SOD | PRO | Chla | Chlb | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | – | |||||||||||
| Gs | 0.954*** | - | ||||||||||
| E | 0.873*** | 0.945*** | – | |||||||||
| Fv/Fm | 0.548*** | 0.456** | 0.375* | – | ||||||||
| RWC | 0.574*** | 0.431** | 0.358* | 0.346* | – | |||||||
| CAT | -0.322* | -0.382* | -0.357* | 0.056 | -0.143 | – | ||||||
| GPX | 0.390* | 0.371* | 0.441** | 0.058 | 0.211 | 0.140 | – | |||||
| MDA | 0.180 | 0.283 | 0.462** | -0.101 | -0.070 | -0.160 | 0.063 | – | ||||
| SOD | -0.155 | -0.251 | -0.2987 | 0.036 | -0.092 | 0.578*** | 0.392* | -0.328* | – | |||
| PRO | -0.800*** | -0.732*** | -0.645*** | -0.684*** | -0.522*** | 0.185 | -0.247 | 0.043 | -0.067 | – | ||
| Chla | -0.087 | -0.079 | -0.010 | -0.363* | -0.206 | 0.451** | 0.250 | -0.107 | 0.130 | 0.235 | – | |
| Chlb | -0.422** | -0.375* | -0.250 | -0.368* | -0.322* | 0.017 | -0.138 | 0.020 | -0.042 | 0.476** | 0.225 | – |
Each square indicates the Pearson’s correlation coefficient of a pair of parameters. A: net photosynthesis (μmol CO2 m2 s-1), Gs: stomatal conductance (mmol m-2 s-1), E: traspiration rate (mmol m-2 s-1), Fv/Fm: cholorophyll fluorescence, RWC: relative water content (%), CAT: catalase (μmol min-1 mg protein-1), GPX: peroxidase (μmol min-1 mg protein-1), MDA: malondyaldeide (nmol g-1 FW), SOD: superoxide dismutase (units mg protein-1), Pro: proline (nmol g-1 FW), Chla: chlorophyll a (mg g-1 FW), Chlb: chlorophyll b (mg g-1 FW). Correlation was significant at the ∗P < 0.05; ∗∗P < 0.01; ∗∗∗P < 0.001.