Genetic Control of Growth Traits of Eucalyptus urophylla S. T. BLAKE in South East China

Data from five thinned E. urophylla progeny trials in south east China were used to estimate the genetic parameters heritability, age-age correlations and Type B correlations for DBH and height from age 1 to 5 years. Heritabilities ranged between 0.11 and 0.41 for DBH, and between 0.12 and 0.49 for HT. Heritability increased with age. Age-age correlations for DBH and height were generally very high; effective early selection could be made as early as 12 months. High Type B correlations and low family-by-fertiliser interaction for both DBH and height suggested that genotype-by-environment interaction should not be important for this species in the region of the trials.