Spearman rank coefficients between the family means when grown from seed or coppiced from the existing root systems. Family mean growth-strain rank shows a strong relationship before and after coppicing (\(\sim\) 200 plants from seed and \(\sim\) 200 from coppice).
Property Spearman coefficient
Diameter 0.44
Dry density 0.30
Acoustic velocity 0.69
Stiffness 0.44
Growth-strain 0.77