Heritability of growth strain in Eucalyptus bosistoana: a Bayesian approach with left-censored data§

BackgroundNarrow-sense heritabilities of the wood properties of 2-year-old Eucalyptus bosistoana F.Muell. were estimated from 623 stems.FindingsHeritability estimates were calculated for the following: growth strain (0.63), density (0.54), diameter (0.76), volumetric shrinkage (0.29), acoustic velocity (0.97) and stiffness (0.82). A modified version of the splitting test for detecting growth strain is described. The modified rapid-testing procedure resulted in left-censored growth strain data, so a Bayesian approach was implemented to reduce errors associated with censored data sets.ConclusionsCorrelations between wood properties are presented and discussed, as well as trade-offs when shifting trait means by selective breeding.

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