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Table 4 Results of two-way ANOVA (F-ratios) showing the effects of different concentrations (C) of Phragmites australis litter mediated agarose on germination and growth of Lactuca sativa with different seed densities (D)

From: Allelopathy and resource competition: the effects of Phragmites australis invasion in plant communities

Factor df F ratio and probability
Germination percentage Above ground biomass Below ground biomass Total biomass Root length Root length
Concentration (C) 2 24.17*** 71.35*** 30.54*** 53.59*** 91.53*** 29.67***
Density (D) 2 7.61*** 7.95** 7.19** 6.19** 14.99*** 20.82***
C × D 4 2.76* 4.51* 0.43ns 2.05ns 2.40ns 1.95ns
Error 18       
Total 27       
  1. Data used as % of control. Level of significance: ***, **, * and ns indicate significant difference at P ≤ 0.001, P ≤ 0.01, P ≤ 0.05 and non-significant respectively