Table 2.
Ascorbate (AsA), total ascorbate (tASA), and dehydroascorbate (DHA) content in Carrizo and Cleopatra leaves subjected to drought (WS), heat (HS), and their combination (WS+HS).
| Genotype | tAsA (μmol g-1 FW) | AsA (μmol g-1 FW) | DHA (μmol g-1 FW) | AsA/DHA |
|---|---|---|---|---|
| Carrizo | ||||
| CT | 4.68 ± 0.2 e | 4.26 ± 0.09 b | 0.42 ± 0.11 bc | 11.58 ± 2.79 ab |
| WS | 3.87 ± 0.31 e | 3.58 ± 0.26 b | 0.29 ± 0.05 c | 13.11 ± 1.59 a |
| HS | 7.24 ± 0.55 bc | 6.0 ± 0.35 ab | 1.24 ± 0.33 bc | 5.04 ± 2.3 bc |
| WS+HS | 9.35 ± 0.32 b | 8.53 ± 0.33 a | 0.81 ± 0.16 bc | 10.51 ± 1.76 ab |
| Cleopatra | ||||
| CT | 4.75 ± 0.74 de | 3.91 ± 0.52 b | 0.84 ± 0.39 bc | 6.52 ± 1.99 abc |
| WS | 7.02 ± 0.72 cd | 4.82 ± 0.48 b | 2.2 ± 0.39 b | 2.40 ± 0.47 c |
| HS | 6.12 ± 0.21 cde | 4.13 ± 0.25 b | 1.99 ± 0.18 bc | 2.10 ± 0.23 c |
| WS+HS | 13.84 ± 0.41 a | 8.4 ± 1.18 a | 5.44 ± 1.17 a | 1.68 ± 0.35 c |
| G: ∗∗∗ | G: ∗∗∗ | G: ∗∗∗ | G: ns | |
| S: ∗∗ | S: ns | S: ∗∗∗ | S: ∗∗∗ | |
| G×S: ns | G×S: ns | G×S: ∗∗∗ | G×S: ns |
Data are presented as mean value of three different replicates ± SD. Different letters denote statistical significance at p ≤ 0.05. G, genotype; S, stress treatment; G×S, interaction genotype × stress treatment. ∗P < 0.05; ∗∗P < 0.01; ∗∗∗P < 0.001; ns, no statistical differences.