Table 1.
Correlation matrix between studied parameters including intrinsic water use efficiency (WUEi), net photosynthesis (An), mesophyll conductance (gm), stomatal conductance (gs) and the ratio (gm/gs), abscisic acid (ABA), and leaf water potential (Ψleaf).
| An | gs | gm | gm/gs | WUEi | Ψleaf | ABA | |
|---|---|---|---|---|---|---|---|
| A n | 1 | 0.938** | 0.892** | −0.164 | 0.639** | 0.885** | −0.695** |
| g s | 1 | 0.777** | 0.339* | 0.759** | 0.740** | −0.548** | |
| g m | 1 | 0.160 | 0.439** | 0.760** | −0.643** | ||
| g m /g s | 1 | 0.771** | −0.109 | −0.229 | |||
| WUE i | 1 | −0.395** | 0.072 | ||||
| Ψleaf | 1 | −0.816** | |||||
| ABA | 1 |
* and **mean statistically significant relationship according to the Pearson correlation analysis at P < 0.05 and P < 0.01.