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Table 1 Morphological characteristics and biomass of Helianthus tuberosus and Ageratina adenophora competition under full sunlight

From: Potential use of Helianthus tuberosus to suppress the invasive alien plant Ageratina adenophora under different shade levels

Variables Ratios (H. tuberosus: A. adenophora)
4:0 2:1 1:1 1:2 0:4
Total shoot length (cm)
 H. tuberosus 173.62 ± 3.59c 181.74 ± 4.37b 190.54 ± 4.51ab 197.62 ± 4.26a
 A. adenophora 61.67 ± 1.77d 96.11 ± 1.46c 140.58 ± 1.80b 171.39 ± 2.26a
Main stem length (cm)
 H. tuberosus 138.06 ± 2.68c 143.17 ± 3.76bc 149.34 ± 3.60ab 152.96 ± 3.27a
 A. adenophora 41.06 ± 1.68d 60.79 ± 1.55c 75.22 ± 1.25b 84.72 ± 1.93a
Total branch length (cm)
 H. tuberosus 35.56 ± 1.13d 38.58 ± 1.09c 41.19 ± 1.09b 44.66 ± 1.04a
 A. adenophora 20.61 ± 0.47d 35.42 ± 0.50c 65.36 ± 0.65b 86.67 ± 0.96a
Branch number
 H. tuberosus 3.5 ± 0.4b 4.0 ± 0.4b 4.9 ± 0.5a 5.1 ± 0.5a
 A. adenophora 6.4 ± 0.5d 9.4 ± 0.5c 14.3 ± 0.6b 18.3 ± 0.9a
Leafstalk length (cm)
 H. tuberosus 5.80 ± 0.02c 5.95 ± 0.04b 6.06 ± 0.03a 6.10 ± 0.03a
 A. adenophora 3.01 ± 0.02d 3.45 ± 0.01c 3.83 ± 0.01b 4.74 ± 0.02a
Leaf area (cm2)
 H. tuberosus 64.57 ± 0.59c 65.21 ± 0.71bc 66.18 ± 0.74b 67.93 ± 0.70a
 A. adenophora 16.20 ± 0.15d 20.25 ± 0.16c 33.32 ± 0.36b 38.34 ± 0.24a
Root biomass (g)
 H. tuberosus 236.97 ± 2.94c 262.79 ± 4.60b 264.76 ± 3.38b 286.44 ± 3.20a
 A. adenophora 2.74 ± 0.09d 4.20 ± 0.24c 8.25 ± 0.27b 14.32 ± 0.30a
Aboveground biomass (g)
 H. tuberosus 95.16 ± 1.00c 105.86 ± 2.03b 106.75 ± 3.43b 125.40 ± 3.98a
 A. adenophora 11.24 ± 0.29d 14.31 ± 0.29c 16.29 ± 0.36b 42.34 ± 1.43a
Total biomass (g)
 H. tuberosus 332.13 ± 3.79c 368.64 ± 4.94b 371.50 ± 5.94b 411.84 ± 5.77a
 A. adenophora 13.98 ± 0.20d 18.51 ± 0.24c 24.54 ± 0.41b 56.64 ± 1.21a
  1. Data are expressed as mean ± standard deviation. Different letters within the same row signify significant differences at P < 0.05