Chin J Plant Ecol ›› 2010, Vol. 34 ›› Issue (10): 1174-1184.DOI: 10.3773/j.issn.1005-264x.2010.10.006
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MAO Zi-Jun*(), JIA Gui-Mei, LIU Lin-Xin, ZHAO Meng
Received:
2009-11-09
Accepted:
2010-01-17
Online:
2010-11-09
Published:
2010-10-31
Contact:
MAO Zi-Jun
MAO Zi-Jun, JIA Gui-Mei, LIU Lin-Xin, ZHAO Meng. Combined effects of elevated temperature, elevated [CO2] and nitrogen supply on non-structural carbohydrate accumulation and allocation in Quercus mongolica seedlings[J]. Chin J Plant Ecol, 2010, 34(10): 1174-1184.
Fig. 1 Temperature (in growth camber 1, camber 2) and illumination (in all of three chambers) of June, July and August. PAR, photosynthetically active radiation.
Fig. 2 Percentage of soluble sugar of dry matter in various parts of seedlings. A, Leaf. B, Stem. C, Taproot. D, Lateral root. E, Fine root. N2, high nitrogen (15 mmol·L-1); N1, normal nitrogen (7.5 mmol·L-1); N0, no added nitrogen. HCHT, CO2 concentration elevated to 700 μmol·mol-1 and temperature elevated 4 ℃; HT, temperature elevated 4 ℃; CK, control.
Fig. 4 The percentage of sugar of the whole seedling in different conditions. Different small letters show significant differences (p ≤ 0. 05) among different treatments in the same month. CK, HCHT, HT, N0, N1, N2, see Fig. 2.
Fig. 5 The percentage of starch of the whole seedling in different conditions. Different small letters show significant differences (p ≤ 0. 05) among different treatments in the same month. N0, N1, N2, see Fig. 2.
Fig. 6 The percentage of non-structure carbohydrate of the whole seedling in different conditions. Different small letters show significant differences (p ≤ 0. 05) among different treatments in the same each month. N0, N1, N2, see Fig. 2.
Fig. 7 Dynamics of the accumulation of sugar in whole seedlings and their various parts. FR, fine root; L, leaf; LR, lateral root; S, stem; TR, taproot. Columns of the same variable in columns N2, N1, and N0 with different small letters above them are significantly different (p ≤ 0. 05) among different treatments in the same each month. CK, HCHT, HT, N0, N1, N2, see Fig. 2.
N水平 N level | HCHT | HT | CK | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L | S | TR | LR | FR | L | S | TR | LR | FR | L | S | TR | LR | FR | |
N2 | 42 | 11 | 40 | 3 | 4 | 12 | 16 | 60 | 8 | 4 | 23 | 4 | 57 | 4 | 2 |
N1 | 43 | 14 | 38 | 3 | 2 | 26 | 28 | 36 | 6 | 4 | 22 | 21 | 47 | 5 | 5 |
N0 | 33 | 11 | 42 | 6 | 8 | 22 | 23 | 46 | 4 | 5 | 17 | 17 | 55 | 4.5 | 6.5 |
Table 1 Allocation of soluble sugars in various parts of seedlings under different treatment conditions (%)
N水平 N level | HCHT | HT | CK | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L | S | TR | LR | FR | L | S | TR | LR | FR | L | S | TR | LR | FR | |
N2 | 42 | 11 | 40 | 3 | 4 | 12 | 16 | 60 | 8 | 4 | 23 | 4 | 57 | 4 | 2 |
N1 | 43 | 14 | 38 | 3 | 2 | 26 | 28 | 36 | 6 | 4 | 22 | 21 | 47 | 5 | 5 |
N0 | 33 | 11 | 42 | 6 | 8 | 22 | 23 | 46 | 4 | 5 | 17 | 17 | 55 | 4.5 | 6.5 |
N水平 N level | HCHT | HT | CK | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L | S | TR | LR | FR | L | S | TR | LR | FR | L | S | TR | LR | FR | |||
N2 | 25 | 6 | 64 | 4 | 1 | 6 | 8 | 76 | 9 | 1 | 9 | 10 | 76 | 4 | 1 | ||
N1 | 17 | 7 | 72 | 3 | 1 | 21 | 18 | 57 | 3 | 1 | 11 | 16 | 69 | 3 | 1 | ||
N0 | 28 | 6 | 60 | 4 | 2 | 18 | 11 | 68 | 2 | 1 | 7 | 7 | 83 | 2 | 1 |
Table 2 Allocation of starch in various parts of seedling under different treatment conditions (%)
N水平 N level | HCHT | HT | CK | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
L | S | TR | LR | FR | L | S | TR | LR | FR | L | S | TR | LR | FR | |||
N2 | 25 | 6 | 64 | 4 | 1 | 6 | 8 | 76 | 9 | 1 | 9 | 10 | 76 | 4 | 1 | ||
N1 | 17 | 7 | 72 | 3 | 1 | 21 | 18 | 57 | 3 | 1 | 11 | 16 | 69 | 3 | 1 | ||
N0 | 28 | 6 | 60 | 4 | 2 | 18 | 11 | 68 | 2 | 1 | 7 | 7 | 83 | 2 | 1 |
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