TABLE 3.
Parameters of the cyclic electron flow (CEF) induction properties in P. notoginseng and P. kingianum and E. breviscapus studied.
| Light intensity | Species | T30(S) | T50(S) | T90(S) | IS300S | IS600S | IS1200S |
| 50 | P. notoginseng | 7.676 ± 0.546 b | 17.150 ± 0.812 b | 67.674 ± 0.416 b | 4.020 ± 0.196 a | 3.380 ± 0.128 a | 2.520 ± 0.102 a |
| P. kingianum | 5.135 ± 0.367 b | 10.968 ± 0.478 c | 71.925 ± 1.071 b | 3.480 ± 0.146 b | 2.820 ± 0.073 b | 2.120 ± 0.153 b | |
| E. breviscapus | 46.453 ± 1.288 a | 77.422 ± 2.146 a | 135.559 ± 3.947 a | 2.320 ± 0.124 c | 1.580 ± 0.128 c | 1.040 ± 0.093 c | |
| 100 | P. notoginseng | 6.733 ± 0.548 c | 13.728 ± 0.939 c | 53.766 ± 1.722 c | 7.040 ± 0.140 a | 6.920 ± 0.150 a | 6.360 ± 0.172 a |
| P. kingianum | 11.561 ± 0.730 b | 22.571 ± 1.222 b | 63.560 ± 1.697 b | 7.780 ± 0.262 a | 6.740 ± 0.262 a | 4.880 ± 0.242 b | |
| E. breviscapus | 59.390 ± 1.718 a | 98.783 ± 1.901 a | 176.769 ± 4.232 a | 7.060 ± 0.343 a | 5.600 ± 0.167 b | 4.480 ± 0.136 b | |
| 400 | P. notoginseng | 5.192 ± 0.172 b | 10.486 ± 0.413 c | 29.296 ± 1.211 c | 5.920 ± 0.107 c | 6.840 ± 0.204 c | 10.420 ± 0.599 b |
| P. kingianum | 6.357 ± 0.443 b | 13.126 ± 0.824 b | 52.286 ± 2.008 b | 11.700 ± 1.233 b | 9.800 ± 0.445 b | 11.400 ± 0.661 b | |
| E. breviscapus | 19.705 ± 0.641 a | 36.905 ± 0.500 a | 105.052 ± 3.298 a | 17.940 ± 0.783 a | 27.340 ± 0.787 a | 31.020 ± 1.360 a | |
| 800 | P. notoginseng | 5.129 ± 0.255 c | 7.377 ± 0.422 c | 33.122 ± 2.784 c | 6.060 ± 0.586 c | 8.960 ± 0.571 b | 11.580 ± 0.731 c |
| P. kingianum | 9.196 ± 0.331 a | 19.344 ± 0.718 a | 78.431 ± 1.831 a | 17.420 ± 1.391 b | 18.560 ± 0.539 a | 22.620 ± 1.273 b | |
| E. breviscapus | 7.826 ± 0.307 b | 14.955 ± 0.398 b | 58.349 ± 2.764 b | 23.740 ± 1.429 a | 20.180 ± 0.862 a | 30.300 ± 1.455 a | |
| 1600 | P. notoginseng | 1.922 ± 0.116 b | 5.192 ± 0.126 c | 20.327 ± 1.352 b | 17.980 ± 1.565 b | 14.120 ± 1.012 c | 16.140 ± 1.148 b |
| P. kingianum | 2.676 ± 0.184 b | 6.146 ± 0.269 b | 35.087 ± 1.797 a | 20.220 ± 1.399 b | 20.320 ± 1.693 b | 20.540 ± 1.869 b | |
| E. breviscapus | 5.741 ± 0.487 a | 8.331 ± 0.290 a | 24.894 ± 1.795 b | 31.000 ± 1.404 a | 35.820 ± 2.038 a | 51.580 ± 1.306 a |
The data in the table are mean ± SE (n = 5). Different letters indicate significant differences between materials (P < 0.05). T30(S), the time required to reach 30% of maximum CEF; T50(S), the time required to reach 50% of maximum CEF; T90(S), the time required to reach 90% of maximum CEF; IS300S, the induction state of different light-demanding plants after 300 s light; IS600S, the induction state of different light-demanding plants after 600 s light; IS1200S, the induction state of different light-demanding plants after 1,200 s light.