GENETIC-VARIATION FOR GROWTH AND WOOD DENSITY IN EUCALYPTUS-GLOBULUS SSP. GLOBULUS IN TASMANIA (AUSTRALIA)

Genetic parameters for diameter and Pilodyn penetration were estimated for a 5 year-old Eucalyptus globulus ssp. globulus base population es tablished across 5 sites in Tasmania (Australia). The model included r ace, family plot, incomplete block and family-by-site interaction as r andom and replicate as fixed effects. Race effects were generally low for diameter and moderate for Pilodyn, with heritabilities across the 5 sites of h(2) = 0.20 and 0.30 respectively. For each trait, correlat ions between trials were generally high, suggesting that a combined an alysis across sites should be appropriate. The genetic correlation bet ween Pilodyn penetration and diameter was moderately unfavourable (ave raged 0.25) whereas race correlations were low but favourable (-0.19).