Table 1.
Temporal changes in the chloroplast ultrastructure of the flag leaf and the exposed peduncle of wheat.
| Developmental stage1 | Number of chloroplasts per mm2 cell profile | Number of starch grains per chloroplast profile | Number of plastoglobuli per chloroplast profile | |||
|---|---|---|---|---|---|---|
| Flag leaf | Exposed peduncle | Flag leaf | Exposed peduncle | Flag leaf | Exposed peduncle | |
| 1 | 68.02 ± 7.16a2,5 | 89.95 ± 8.12a | 2.21 ± 0.38a3 | 0 | 7.83 ± 2.34d4 | 9.82 ± 2.08c |
| 2 | 65.47 ± 6.71a | 87.30 ± 8.54a | 2.27 ± 0.24a | 0 | 10.69 ± 2.79d | 12.27 ± 3.03bc |
| 3 | 56.85 ± 5.44b | 76.95 ± 6.83b | 1.24 ± 0.31b | 0 | 24.74 ± 5.64c | 14.60 ± 4.14b |
| 4 | 33.86 ± 4.29c | 55.84 ± 6.47c | 0.28 ± 0.10c | 0 | 42.56 ± 7.43b | 19.65 ± 4.37a |
| 5 | 14.42 ± 2.02d | 21.28 ± 2.59d | 0 ± 0d | 0 | 70.44 ± 11.83a | 23.49 ± 3.56a |
1 Stages 1-5 correspond to the end of anthesis, the milk-development stage, the soft dough-development stage, the hard dough-development stage and the ripening stage, respectively.
2 Values given are the mean ± standard deviation for four plants (>10 mm2 of sections were recorded from each plant).
3 Values given are the mean ± standard deviation for four plants (>30 cells with the largest dimension were recorded from each plant).
4 Values given are the mean ± standard deviation for four plants (>50 chloroplasts with the largest dimension were recorded from each plant).
5 Means followed by different letters within a column are significantly different by a Tukey test (P < 0.05).