Table 3 Photosynthetic pigment level affected by light intensity × NSC.
Treatments | Photosynthetic pigment content (mg/g) | Chlorophyll a/b | ||||
|---|---|---|---|---|---|---|
Light intensity (μmol · m−2 · s−1) | Nutrient solution concentration | Chlorophyll a | Chlorophyll b | Total Chlorophyll | Carotenoid | |
150 | 1/4 | 0.38 ± 0.022abc | 0.138 ± 0.0088a | 0.525 ± 0.0308a | 0.087 ± 0.0087bc | 2.76 ± 0.048e |
1/2 | 0.38 ± 0.022abc | 0.130 ± 0.0070ab | 0.512 ± 0.0295a | 0.085 ± 0.0060bc | 2.91 ± 0.020e | |
3/4 | 0.36 ± 0.016bcd | 0.127 ± 0.0136ab | 0.497 ± 0.0163a | 0.079 ± 0.0054c | 2.94 ± 0.391e | |
250 | 1/4 | 0.39 ± 0.014abc | 0.113 ± 0.0081b | 0.507 ± 0.0149a | 0.105 ± 0.0055abc | 3.46 ± 0.277e |
1/2 | 0.32 ± 0.010de | 0.082 ± 0.0029c | 0.405 ± 0.0124bc | 0.081 ± 0.0038c | 3.87 ± 0.092e | |
3/4 | 0.40 ± 0.012ab | 0.129 ± 0.0037ab | 0.537 ± 0.0153a | 0.097 ± 0.0034abc | 3.11 ± 0.018e | |
350 | 1/4 | 0.34 ± 0.027 cd | 0.086 ± 0.0048c | 0.434 ± 0.0318b | 0.089 ± 0.0081abc | 3.95 ± 0.086e |
1/2 | 0.41 ± 0.005a | 0.079 ± 0.0053c | 0.499 ± 0.0076a | 0.116 ± 0.0012a | 5.28 ± 0.386de | |
3/4 | 0.28 ± 0.006ef | 0.006 ± 0.0004e | 0.294 ± 0.0066d | 0.084 ± 0.0086bc | 50.44 ± 2.205a | |
450 | 1/4 | 0.35 ± 0.005 cd | 0.010 ± 0.0005e | 0.368 ± 0.0057c | 0.110 ± 0.0124ab | 36.95 ± 1.714b |
1/2 | 0.25 ± 0.001 f | 0.016 ± 0.0003e | 0.268 ± 0.0010d | 0.090 ± 0.0008abc | 15.26 ± 0.241c | |
3/4 | 0.35 ± 0.008 cd | 0.051 ± 0.0011d | 0.410 ± 0.0088bc | 0.099 ± 0.0187abc | 6.87 ± 0.048d | |
ANOVA (F value) | Light intensity | 9.358** | 184.564** | 49.715** | 2.112 | 401.694** |
NSC | 3.616* | 3.127 | 4.459* | 0.946 | 118.356** | |
Light intensity × NSC | 14.9** | 26.497** | 20.264** | 2.383 | 416.712** | |
