Quantitative Genetics of a Hybrid Population of Eucalyptus nitens × Eucalyptus globulus: Estimation of Genetic Parameters and Implications for Breeding Strategies

In Chile, interspecific hybrids between Eucalyptus nitens × globulus (GloNi) were developed by Arauco Forestry to capture specific traits from each parental species: growth rate and cold resistance E. (NIT) wood properties (GLO). Field tests of distributed in two geographic zones: (12 tests) Valdivia (15 tests), where measurements recorded at different ages. The hybrid population is composed clones 28 full-sib families, being the result crossing 12 females 8 males. Progeny these families vegetatively propagated tested on zone, with a total 1214 developed. quantitative genetic parameter estimates reveal high variation volume gain properties, which make possible large all analyzed. Additionally, has considerable impact hybrid, making it important test more parents future crosses both zones. contrast, demonstrated zero volume. traits, zone demonstrates effect variability traits; meanwhile, contributed roughly similar amounts variation. General Hybridizing Ability (GHA) Combining (GCA) relationship progeny pure species performance indicates that could be selected for based results properties.