Pigment/Carbohydrate | Photosynthetic pigments | Carbohydrate fractions | |||||
---|---|---|---|---|---|---|---|
Treatment | Chl a | Chl b | Chl a/b | Total Chl | Soluble Sugars | Polysaccharides | Total Carbohydrates |
Control | 13.12 ± 0.01e | 7.43 ± 0.13b | 1.77 ± 0.03 | 20.55 ± 0.15bc | 2.26 ± 0.05e | 14.39 ± 0.88c | 16.65 ± 0.9cd |
Chilling (6 °C ± 0.5) | 9.72 ± 0.16g | 5.1 ± 0.2d | 1.91 ± 0.11 | 14.82 ± 0.05d | 2.9 ± 0.049cd | 9.46 ± 0.36e | 12.36 ± 0.3e |
Pot. silicate (80 mM) | 15.12 ± 0.35b | 7.9 ± 0.005b | 1.91 ± 0.04 | 23.02 ± 0.36b | 3.59 ± 0.11ab | 19.17 ± 1.07a | 22.76 ± 1.1a |
Humic acid (50 mg l−1) | 17.50 ± 0.18a | 9.53 ± 0.02a | 1.84 ± 0.01 | 27.03 ± 0.12a | 4.06 ± 0.06a | 21.57 ± 0.34a | 25.16 ± 0.3a |
γ- rays (50 Gy) | 14.86 ± 0.21bc | 7.91 ± 0.12b | 1.88 ± 0.05 | 22.77 ± 0.18b | 2.49 ± 0.19de | 16.32 ± 0.5b | 18.81 ± 0.3b |
Chilling + Pot. silicate | 14.14 ± 0.36 d | 6.61 ± 0.24c | 2.14 ± 0.02 | 20.75 ± 0.6bc | 2.55 ± 0.08de | 15.43 ± 0.59bc | 17.97 ± 0.5bc |
Chilling + Humic acid | 14.17 ± 0.12cd | 6.61 ± 0.05c | 2.14 ± 0.002 | 20.78 ± 0.17bc | 3.35 ± 0.32bc | 15.69 ± 0.6bc | 19.04 ± 0.84b |
Chilling + γ- rays | 12.30 ± 0.08f | 5.85 ± 0.02d | 2.10 ± 0.12 | 18.15 ± 0.09c | 3.08 ± 0.06cd | 11.87 ± 0.22d | 14.95.4 ± 0.28d |
LSD at 0.05 | 0.72 | 0.59 | 0.067 | 1.55 | 0.418 | 1.966 | 0.006 |