TABLE 1.
Solar radiation doses under different treatments in experiments 1 to 3a
| Expt | Treatment | Solar exposure period (h) | UV-BDNAb (kJ m−2) | UV-B (W m−2) | UV-A (105 W m−2) | Photosynthetically active radiationc (106 W m−2) |
|---|---|---|---|---|---|---|
| 1 | Foil | 3 | 0 | 0 | 0.00 | 0.00 |
| OXO2 | 3 | 2.14 | 10,400 | 4.48 | 2.36 | |
| 2 | Foil | 7.5 | 0 | 0.00 | 0.00 | 0.00 |
| OXO2 | 7.5 | 4.63 | 22,300 | 9.35 | 4.66 | |
| Mylar | 7.5 | 0.14 | 144 | 8.05 | 4.37 | |
| VE | 7.5 | 0 | 0.00 | 0.00 | 4.33 | |
| Ambient | 7.5 | 5.25 | 24,900 | 10.01 | 4.99 | |
| 3 | WG 280 | 3 | 1.88 | 9,000 | 3.76 | 2.29 |
| WG 295 | 3 | 1.36 | 7,450 | 3.75 | 2.30 | |
| WG 305 | 3 | 1.10 | 6,450 | 3.68 | 2.29 | |
| WG 320 | 3 | 0.07 | 420 | 3.38 | 2.26 | |
| WG 335 | 3 | 0.03 | 0.9 | 3.20 | 2.28 | |
| WG 345 | 3 | 0.01 | 0.00 | 2.13 | 2.21 | |
| WG 360 | 3 | 0.00 | 0.00 | 1.04 | 2.18 | |
| VE | 3 | 0.00 | 0.00 | 0.00 | 2.14 |
a
Data are radiation doses during the entire exposure period. Data for experiment 2 are total doses over the five 1.5-h exposure periods.
b
UV-BDNA is the UV-B dose weighted with the DNA damage action spectrum of Setlow (13).
c
400 to 600 nm.