BioMed Research International / 2019 / Article / Tab 3

Research Article

Supplementary Light Source Affects Growth, Metabolism, and Physiology of Adenophora triphylla (Thunb.) A.DC. Seedlings

Table 3

Stomata characteristics in A. triphylla leaves after four weeks of cultivation under different supplementary light sources.

TreatmentSD (mm−2)GCL (μm)GCW (μm)PL (μm)PW (μm)GCA (μm2)PA (μm2)PAPLA (1000 μm2·mm−2)Aperture

HPS433.9 ± 21.2 b11.9 ± 1.2 a2.6 ± 0.6 a15.5 ± 0.4 b3.8 ± 0.2 a71.5 ± 1.3 c28.6 ± 8.7 a12.8 ± 4.5 a0.22 ± 0.03 ab
MH121.1 ± 31.7 c11.5 ± 3.2 a2.9 ± 0.6 a21.0 ± 0.3 a4.1 ± 0.1 a116.9 ± 8.9 a29.8 ± 12.1 a4.2 ± 2.0 b0.26 ± 0.02 a
FR98.8 ± 20.5 c12.5 ± 1.0 a2.3 ± 0.2 a17.3 ± 1.5 b3.7 ± 0.2 a80.1 ± 4.6 bc25.6 ± 2.0 a2.6 ± 0.7 b0.19 ± 0.03 ab
LED-w414.2 ± 10.1 b13.5 ± 0.2 a3.4 ± 0.4 a17.5 ± 0.3 b4.0 ± 0.3 a80.7 ± 4.1 bc38.4 ± 5.9 a15.8 ± 2.9 a0.25 ± 0.03 a
LED-mix664.1 ± 33.4 a13.0 ± 1.1 a1.9 ± 0.2 a17.3 ± 0.5 b4.0 ± 0.1 a98.6 ± 3.5 ab20.9 ± 2.2 a13.8 ± 1.0 a0.15 ± 0.03 b

SD: stomata density; GCL: guard cell length; GCW: guard cell width; PL: pore length; PW: pore width; GCA: guard cell area; PA: pore area; and PAPLA: pore area per leaf area (1000 μm2·mm−2). HPS: high pressure sodium; MH: metal halide; FR: far-red; LED-w: white (red: green: blue = 2:4:3) light-emitting diodes; and LED-mix: mixed (red: green: blue = 4:1:4) light-emitting diodes. Different letters (a, b, and c) indicate significant differences (p < 0.05) among treatments.

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