Table 1.
Chlorophyll a (Chl a), chlorophyll b (Chl b), total chlorophyll (TC), and total carotenoid (Cx+c) concentrations in Pokkali and IR 29 rice seedlings, when exposed to control (0 mM NaCl) and salt stress (200 mM NaCl) for 7 days
| Varieties | NaCl (mM) |
Chl a (μg g−1 FW) |
Chl b (μg g−1 FW) |
TC (μg g−1 FW) |
Cx+c (μg g−1 FW) |
|---|---|---|---|---|---|
| Pokkali | 0 | 80.23 ± 1.49a | 55.46 ± 0.20a | 135.67 ± 1.38a | 5.63 ± 0.04b |
| 200 |
71.54 ± 2.63b (10.83%) |
48.72 ± 1.13b (12.15%) |
120.26 ± 1.56b (11.36%) |
5.00 ± 0.09b (11.19%) |
|
| IR29 | 0 | 88.53 ± 1.48a | 53.96 ± 1.07a | 142.49 ± 1.97a | 6.51 ± 0.23a |
| 200 |
28.91 ± 0.18c (67.34%) |
18.30 ± 0.42c (72.15%) |
43.94 ± 0.32c (69.16%) |
1.85 ± 0.04c (71.58%) |
Figures in parentheses represent percent degradation in photosynthetic pigments of salt stressed seedlings in each cultivar. Data presented as mean ± standard error
Different letters in each column represent significant difference at P ≤ 0.01 according to Tukey’s HSD