Principal component analysis based on traits.

<p>Principal components diagram of treatments (a) show the overall light reaction norm of morphological and growth traits. Values are means (±SE), n = 12 or 9. The first principal component separate <i>A. philoxeroides</i> (left) and <i>P. canescens</i> (right), and connected (filled circle and solid line) and severed (open circle and dashed line) ramets. The second principal component reflects the light response of ramets, with shade treatments marked by gray dashed squares. Composition of the first two principal components (loading values of traits) is shown (b).