Table II.
Carotenoid content of leaves of varieties IR72 and IR65600-42-5-2 (NPT) in LL, ML, and HL conditions (10%, 40%, and 100% of full sunlight, respectively)
| Variety and Growth Condition | Lutein | Neoxanthin | β -Carotene | XC | Ratio of Total Carotenoid to Total Chlorophyll |
|---|---|---|---|---|---|
| IR72 | |||||
| HL | 32.4 ± 0.37 | 12.58 ± 0.15 | 29.15 ± 0.42 | 28.81 ± 1.94 | 0.512 ± 0.012 |
| ML | 37.91 ± 0.32 | 14.17 ± 0.15 | 28.56 ± 0.27 | 18.41 ± 0.78 | 0.443 ± 0.008 |
| LL | 40.41 ± 0.90 | 15.07 ± 0.15 | 26.91 ± 0.42 | 17.61 ± 0.01 | 0.395 ± 0.005 |
| NPT | |||||
| HL | 32.03 ± 0.41 | 12.58 ± 0.15 | 28.75 ± 0.45 | 26.23 ± 1.25 | 0.474 ± 0.015 |
| ML | 33.49 ± 1.95 | 13.91 ± 0.56 | 30.12 ± 1.13 | 22.98 ± 0.95 | 0.481 ± 0.020 |
| LL | 36.08 ± 1.10 | 14.67 ± 0.52 | 28.03 ± 0.79 | 19.93 ± 0.77 | 0.437 ± 0.014 |
Lutein, neoxanthin, and β -carotene levels are expressed as percentage of total carotenoid. Xanthophyll cycle (XC) content is expressed as percentage of total carotenoid content. Means ± se, n = 5.