Table 1.
Physiological indexes of tea leaves during drought stress.
| Parameters | CK | MD | AT | SD |
|---|---|---|---|---|
| MDA (nmol/g) | 43.87 ± 0.88 b | 46.25 ± 0.88 b | 47.54 ± 0.92 ab | 51.85 ± 2.01 a |
| LWC (%) | 75.88 ± 1.02 | 73.23 ± 0.37 | 68.46 ± 0.7 | 65.36 ± 0.82 |
| CAT (U/g) | 98.48 ± 3.29 a | 80.21 ± 1.75 c | 82.76 ± 1.72 bc | 89.01 ± 1.80 b |
| POD (U/g) | 105.09 ± 3.09 a | 110.33 ± 2.63 a | 89.17 ± 0.92 b | 86.18 ± 0.64 b |
| APX (μmol/min/g) | 1.55 ± 0.05 a | 0.6186 ± 0.01 c | 0.68 ± 0.02 c | 0.9517 ± 0.04 b |
| GR (μmol/min/g) | 483.26 ± 2.81 bc | 433.22 ± 16.81 c | 536.16 ± 16.96 ab | 594.06 ± 25.23 a |
| ABA (μg/g) | 0.4669 ± 0.0194 b | 0.533 ± 0.024 b | 2.6333 ± 0.031 a | 0.4473 ± 0.018 b |
| IAA (μg/g) | 0.6124 ± 0.0113b | 0.8129 ± 0.0338a | 0.6303 ± 0.0158b | 0.5862 ± 0.0124b |
| GA3 (μg/g) | 0.495 ± 0.0393 d | 0.6711 ± 0.0417 c | 0.9108 ± 00,397 b | 1.1986 ± 0.0996a |
| Fv/Fm | 0.83 ± 0.21 a | 0.79 ± 0.19 ab | 0.73 ± 0.18 b | 0.65 ± 0.57 c |
| Chl content (mg/g) | 3.17 ± 0.33 a | 3.01 ± 0.27 ab | 2.88 ± 0.12 ab | 2.46 ± 0.21 b |
The date in the table are represented as the mean ± standard deviation of three biological replicates, lowercase letters indicated statistical significance—samples not sharing a letter differed significantly according to Duncan test at P < 0.05.
CK control group, MD mild drought group, AT ABA treatment group, SD severe drought group, MDA malondialdehyde, CAT catalase, POD Peroxidase, APX ascorbate peroxidase, GR glutathione reductase. The above data were determined under CK (0 h), MD (24 h), AT (77 h) and SD (77 h).