Variation in mechanical and other wood properties between the two groups of sampled trees: individual rings. Ring width, modulus of elasticity (MOE), microfibril angle (MFA) and wood density were measured at a high-resolution in wood cores from the 20 sampled trees using SilviScan 2. Wood traits in each ring were compared between wood with contrasting stiffness and MFA, including ring width, MOE, MFA and density in Flynn (a) and Kromelite (b). Error bars represent the standard deviation of the mean value of each trait. Variation in both MOE and MFA between the two groups of sampled trees is statistically significant while no significant variation appears in ring width and density (P-values ≤ 0.05).