Morphophysiological Behavior and Cambial Activity in Seedlings of Two Amazonian Tree Species under Shade
Table 1
Biomass production of P. gigantocarpa and S. parahyba under different shade intensities. Leaf dry mass (LDM), stem dry mass (SDM), root dry mass (RDM), total dry mass (TDM), aerial dry mass (shoot, ADM), and the ratio between ADM and RDM.
Species
Shade intensity
LDM (g)
SDM (g)
RDM (g)
TDM (g)
ADM/RDM
P. gigantocarpa
Full sun
1.33 (±0.17)a
1.28 (±0.21)a
0.50 (±0.12)a
3.11 (±0.44)a
5.22 (±0.76)
Low
1.01 (±0.04)ab
0.71 (±0.06)b
0.31 (±0.02)b
2.03 (±0.12)b
5.55 (±0.15)
Moderate
1.35 (±0.04)a
1.05 (±0.01)ab
0.39 (±0.02)b
2.79 (±0.04)ab
6.15 (±0.53)
High
0.80 (±0.01)b
0.66 (±0.03)b
0.30 (±0.03)b
1.76 (±0.03)b
4.87 (±0.61)
S. parahyba
Full sun
1.83 (±0.01)d
3.11 (±0.19)b
4.12 (±0.39)a
9.06 (±0.19)b
1.20 (±0.17)
Low
3.99 (±0.25)a
6.30 (±0.70)a
4.40 (±0.03)a
14.69 (±0.92)a
2.34 (±0.23)
Moderate
3.31 (±0.04)b
4.78 (±0.23)ab
4.42 (±0.92)a
12.51 (±0.98)ab
1.83 (±0.38)
High
2.63 (±0.03)c
3.86 (±0.16)b
2.86 (±0.43)b
9.35 (±0.62)b
2.27 (±0.33)
Values are mean ± SE (). Means followed by the same letter in each column are not significantly different (, Tukey test).
