Table 1.
Changes in the pigment contents during the illumination period of 7 h or 9 h in plants grown under 8 h/16 h or 16 h/8 h day/night light period. The sampling at 0 h means that plants were sampled in the dark, directly before the onset of the light. Data represent mean values ± SD. Different letters indicate significant differences at p ≤ 0.05 level, among all the values of the given compounds.
| Content (μg g−1 FW) |
Trans- Violaxanthin |
Trans- Neoxhantin |
Trans- Lutein |
Chlorophyll a | Chlorophyll b | Pheophytin a |
Trans- β-carotene |
9-Cis- β-carotene |
|
|---|---|---|---|---|---|---|---|---|---|
| 8h /16 h | 0 h | 45.77 ± 1.1 a |
43.23 ± 0.67 a |
146.33 ± 2.89 a |
480.67 ± 9.29 a |
241.67 ± 4.16 a |
10.87 ± 0.15 e |
48.53 ± 0.85 a |
4.65 ± 0.11 a |
| 1 h | 55.33 ± 1.36 bcd |
53.27 ± 0.83 ef |
167.33 ± 2.31 d |
543.33 ± 5.77 b |
270.33 ± 2.31 cde |
11.8 ± 0.17 e |
55.83 ± 1.24 efg |
4.66 ± 0.07 a |
|
| 2 h | 55.3 ± 0.9 efg |
50.63 ± 0.75 def |
164.67 ± 2.52 d |
547 ± 5.29 b |
268.67 ± 2.31 bcd |
11.13 ± 0.06 c |
52.17 ± 1.79 b |
4.74 ± 0.13 ab |
|
| 3 h | 59.17 ± 0.67 g |
55.2 ± 0.26 g |
172.33 ± 1.53 ef |
561 ± 7.21 cd |
275 ± 3.61 e |
10.87 ± 0.15 e |
53.17 ± 1.66 bcd |
4.95 ± 0.09 b |
|
| 5 h | 57.8 ± 0.98 bcd |
52.17 ± 0.81 d |
166 ± 2 cd |
544.67 ± 5.69 bc |
267 ± 2.65 bcde |
9.56 ± 0.12 e |
51.63 ± 1.25 bc |
4.76 ± 0.05 ab |
|
| 7 h | 58.9 ± 1.08 fg |
53.2 ± 0.89 ef |
169 ± 1.73 de |
555.33 ± 4.04 bcd |
273 ± 1.73 de |
9.68 ± 0.13 c |
53.53 ± 0.6 bcd |
4.79 ± 0.09 ab |
|
| 16 h/8 h | 0 h | 66.23 ± 2.08 h |
55.57 ± 1.72 g |
187 ± 4.58 g |
631.69 ± 8.74 g |
292.69 ± 4.16 f |
9.96 ± 0.26 d |
62.2 ± 1.92 h |
6.04 ± 0.11 e |
| 1 h | 56.17 ± 0.97 cde |
46.27 ± 0.91 bc |
166.33 ± 2.89 d |
584 ± 11.27 f |
273.67 ± 5.77 de |
8.74 ± 0.13 ab |
56.83 ± 1.1 fg |
4.91 ± 0.12 b |
|
| 2 h | 54.5 ± 0.62 bc |
45.63 ± 0.86 b |
160.33 ± 1.53 bc |
562.67 ± 3.06 de |
263.66 ± 1.15 bc |
8.67 ± 0.09 ab |
54.27 ± 1.38 cde |
4.66 ± 0.3 a |
|
| 3 h | 64.73 ± 0.4 h |
53.93 ± 0.51 fg |
182.67 ± 2.08 g |
625.33 ± 7.51 g |
292.67 ± 3.51 f |
9.61 ± 0.12 c |
63.23 ± 0.25 h |
5.21 ± 0.13 c |
|
| 5 h | 53.93 ± 0.51 b |
44.73 ± 0.23 ab |
158.67 ± 1.15 b |
561.33 ± 4.93 cd |
262.67 ± 3.06 b |
8.65 ± 0.1 ab |
55.1 ± 0.56 def |
5.15 ± 0.08 c |
|
| 7 h | 56.9 ± 0.87 def |
47.96 ± 1.4 c |
165.67 ± 2.52 d |
578 ± 6f |
272.67 ± 3.06 de |
8.85 ± 0.08 b |
57.37 ± 0.45 g |
5.32 ± 0.03 c |
|
| 9 h | 57.77 ± 1.72 efg |
51.8 ± 1.85 de |
175.67 ± 5.51 f |
575.67 ± 15.57 ef |
273 ± 7.55 de |
8.48 ± 0.27 a |
57.53 ± 1.42 g |
5.63 ± 0.07 d |
|