Fig 4. Absence of clinal differentiation of 15 invasive populations of A.adenophora along the elevational gradient for four important traits except for plant height (b) which shows significant but weak positive relationship.
The scatter plots show the relationship between elevation at the home site of the 15 invasive Ageratina adenophora populations and their trait means measured in two common gardens (mid-elevation and low-elevation). Regression lines have been plotted for the only significant relationship, i.e. of plant height with elevation (F1,26 = 6.68, p = 0.0157, see Table 2 for details of ANCOVA results). Solid circles and triangles represent low and mid-elevation garden respectively.