A JOINT VENTURE OF CSIRO & FOREST RESEARCH Ensis-Genetics THE JOINT FORCES OF CSIRO & SCION Harry Wu and Milos Ivkovich Breeding For Wood Quality And End-Products in Radiata Pine: Adverse Genetic Correlation and Economic Weights IUFRO All Division 5 Conference, Taipei, 2007

THE JOINT FORCES OF CSIRO & SCION  The issues arising from previous breeding in radiata pine  Adverse genetic correlation between wood quantity and quality traits in radiata pine  Strategies of breeding to address adverse genetic correlation Content

THE JOINT FORCES OF CSIRO & SCION Trees from native stands Trees from 1st gen. progeny Genetic gain from breeding for growth and form in radiata pine G1. 30% realized genetic gain ($1,395m NPV rotation) G2. 11% predicted genetic gain ($511m NPV rotation) Trees from 2st gen. progeny

THE JOINT FORCES OF CSIRO & SCION  -0.6, 0.27, between growth and density, MfA, and MoE Adverse genetic correlation between juvenile wood quality traits and growth traits in the progeny of 2 nd generation breeding population

THE JOINT FORCES OF CSIRO & SCION Adverse effect on stiffness from selection on growth in radiata pine population

THE JOINT FORCES OF CSIRO & SCION  55 publications in radiata pine   11 traits with focus on wood quality  DEN MfA MoE SGA SRG FBL DBH STS BRA BRS BRC  Heritability and genetic correlation Genetic Parameters

THE JOINT FORCES OF CSIRO & SCION Genetic correlation between DBH and wood density in radiata pine Range Pub. 64 estimates, 94% negative

THE JOINT FORCES OF CSIRO & SCION Wood Density Range , Mean=0.59, Median=0.64, 25 Pub. 244 Estimates

THE JOINT FORCES OF CSIRO & SCION MfA Range , Mean=0.61, Median= Pub. 122 Estimates

THE JOINT FORCES OF CSIRO & SCION MoE Range , Mean=0.49, Median= Pub. 134 Estimates

THE JOINT FORCES OF CSIRO & SCION Summary of Heritability

THE JOINT FORCES OF CSIRO & SCION  Develop economic breeding objective (weights)  Dissect genetic base of the adverse correlation and developing purging strategy Strategies dealing with adverse genetic correlation

THE JOINT FORCES OF CSIRO & SCION Developing breeding objective Breeding for profit – which is the best tree?? -$4 $14 $7 $10 $9 $12

THE JOINT FORCES OF CSIRO & SCION Developing breeding objective Biological Values Economic Values BIO-ECONOMIC MODEL Economic Weight of Target Traits

THE JOINT FORCES OF CSIRO & SCION Sawing study and resource evaluation Resource Product Wood properties Structural grades Link Relate

THE JOINT FORCES OF CSIRO & SCION Breeding objective traits and their economic weights MAISWEBRSMOE unitm3m3 mm/mmmMPa Plantations EW $/ha Sawmill EW $/m Integrated EW $/ha

THE JOINT FORCES OF CSIRO & SCION Genetic gain with selection intensity 1/10

THE JOINT FORCES OF CSIRO & SCION Genetic gain for radiata pine population (based on economic breeding objective and genetic parameters)

THE JOINT FORCES OF CSIRO & SCION Further studies addressing adverse genetic correlation  Juvenile Wood Initiative  Genetic bases of negative genetic correlation  Developing breeding and deployment strategies using a VIRTUE GENE ­ Deterministic model ­ Locus-based model  Silviculture + Genetics

THE JOINT FORCES OF CSIRO & SCION Thanks