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

作者：Davies Nicholas T; Apiolaza Luis A; Sharma Monika

来源：New Zealand Journal of Forestry Science, 2017, 47(1): 5.

DOI：10.1186/s40490-017-008-2

• Eucalyptus bosistoana
• Heritability
• Growth strain
• Wood properties

Background: Narrow-sense heritabilities of the wood properties of 2-year-old Eucalyptus bosistoana F.Muell.were estimated from 623 stems.
Findings: Heritability 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.
Conclusions:Correlations between wood properties are presented and discussed, as well as trade- offs when shifting trait means by selective breeding.

• 出版日期2017-2-17