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Table 2 Plasticity index (PI) of growth traits in the two ragweeds species across growth stages

From: The significance of biomass allocation to population growth of the invasive species Ambrosia artemisiifolia and Ambrosia trifida with different densities

Traits A. artemisiifolia A. trifida
SS VS BS MS SS VS BS MS
Plant height 0.74a 0.47b 0.45b 0.43b 0.77a 0.51b 0.45b 0.31b
Branch number 0d 0.60a 0.54b 0.48c 0d 0.58a 0.49b 0.43c
RM 0.80a 0.74a 0.53c 0.56c 0.81a 0.76a 0.63c 0.56c
SM 0.98a 0.91a 0.74b 0.80b 0.98a 0.91a 0.84b 0.81b
LM 0.98a 0.71c 0.81b 0.67c 0.96a 0.82c 0.81b 0.77c
  1. RM Root biomass, SM stem biomass, LM leaf biomass
  2. Different lowercase letters indicate significant differences in PI across different population densities during the same growth stage (Pā€‰<ā€‰0.05)