Short note: the genetic correlation between air-dried density and basic density in Eucalyptus nitens wood cores
Hamilton, MG, Raymond, CA & Potts, BM 2008, 'Short note: the genetic correlation between air-dried density and basic density in Eucalyptus nitens wood cores', Silvae Genetica, vol. 57, no. 4-5, pp. 210-212.
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Cores extracted from trees to assess wood chemistry are generally not used to assess basic density in eucalypt pulpwood breeding programmes, as the meas-urement of basic density requires high temperature drying. However, both wood chemistry and air-dried density can be assessed on the same core. This study found that the inter-trait genetic correlation between core air-dried and basic density to be effectively equal to one in two Tasmanian Eucalyptus nitens progeny trials. This implies that selection for basic density could be undertaken using air-dried density with little or no reduction in genetic gain, thus negating the need to extract a separate core to assess basic density and wood chemistry. The adoption of this practice could considerably reduce the cost of assessing these traits in eucalypt breeding programmes.