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Table 1 Comparison of anatomical features of the leaves of the four Artemisia species

From: Artemisia dominant species succession relating to the soil moisture decrease in abandoned land of the Loess Plateau (China): comparative study of drought-adaptive characteristics

  A. sacrorum A. scoparia A. giraldii A. annua
Types of leaf cells Transitional form Isolateral leaf Isolateral leaf Bifacial leaf
Leaf thickness (μm) 189.8 ± 1.3b 206.0 ± 2.1a 136.7 ± 1.5c 90.6 ± 1.0d
Epidermal thickness (μm)     
 Upper 23.6 ± 0.8a 17.2 ± 0.9b 16.6 ± 0.8b 12.7 ± 1.3c
 Lower 15.9 ± 1.4a 15.7 ± 0.4a 13.8 ± 0.6b 11.6 ± 0.9c
Thickness of palisade parenchyma (μm)     
 Upper 77.1 ± 0.5a 60.2 ± 0.1b 38.4 ± 0.9c 28.0 ± 0.5d
 Lower 47.6 ± 0.4a 27.8 ± 1.1c
Thickness of spongy parenchyma (μm) 60.9 ± 1.7a 65.5 ± 1.5a 40.0 ± 0.8b 31.0 ± 0.9c
TPP/TSP 1: 0.79 ± 0.02b 1:0.61 ± 0.05a 1:0.60 ± 0.04a 1:1.11 ± 0.02c
Thickness of cuticles (μm)     
 Upper 7.5 ± 0.9a 3.7 ± 0.7b 3.7 ± 0.4b 3.1 ± 0.3bc
 Lower 3.3 ± 0.3a 2.9 ± 0.5ab 2.8 ± 0.4ab 2.7 ± 0.2b
TPP  % 40.1 ± 1.1 %c 52.6 ± 1.1 %a 49.4 ± 0.8 %ab 29.6 ± 1.5 %d
TSP  % 32.0 ± 1.2 %b 32.5 ± 0.8 %b 30.2 ± 0.9 %b 38.6 ± 1.0 %a
  1. Values are presented as mean ± SD, N = 6. Different letters in the same row indicate significant difference at P < 0.01
  2. TPP thickness of palisade parenchyma, TSP thickness of spongy parenchyma