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Table 1 Temporal changes in the chloroplast ultrastructure of the flag leaf and the exposed peduncle of wheat.

From: The structural and photosynthetic characteristics of the exposed peduncle of wheat (Triticum aestivumL.): an important photosynthate source for grain-filling

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. 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. 2 Values given are the mean ± standard deviation for four plants (>10 mm2 of sections were recorded from each plant).
  3. 3 Values given are the mean ± standard deviation for four plants (>30 cells with the largest dimension were recorded from each plant).
  4. 4 Values given are the mean ± standard deviation for four plants (>50 chloroplasts with the largest dimension were recorded from each plant).
  5. 5 Means followed by different letters within a column are significantly different by a Tukey test (P < 0.05).