A JOINT VENTURE OF CSIRO FOREST RESEARCH Breeding
A JOINT VENTURE OF CSIRO & FOREST RESEARCH Breeding For Wood Quality And End-Products in Radiata Pine: Adverse Genetic Correlation and Economic Weights Ensis Genetics Harry Wu and Milos Ivkovich IUFRO All Division 5 Conference, Taipei, 2007 THE JOINT FORCES OF CSIRO & SCION
Content · 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 THE JOINT FORCES OF CSIRO & SCION
Genetic gain from breeding for growth and form in radiata pine G 1. 30% realized genetic gain ($1, 395 m NPV rotation) G 2. 11% predicted genetic gain ($511 m NPV rotation) Trees from native stands THE JOINT FORCES OF CSIRO & SCION Trees from 1 st gen. progeny Trees from 2 st gen. progeny
Adverse genetic correlation between juvenile wood quality traits and growth traits in the progeny of 2 nd generation breeding population · 0. 6, 0. 27, 0. 59 between growth and density, Mf. A, and Mo. E THE JOINT FORCES OF CSIRO & SCION
Adverse effect on stiffness from selection on growth in radiata pine population THE JOINT FORCES OF CSIRO & SCION
Genetic Parameters · 55 publications in radiata pine 4 1960 2007 · 11 traits with focus on wood quality 4 DEN Mf. A Mo. E SGA SRG FBL DBH STS BRA BRS BRC · Heritability and genetic correlation THE JOINT FORCES OF CSIRO & SCION
Genetic correlation between DBH and wood density in radiata pine 13 Pub. 64 estimates, 94% negative Range -1. 08 - 0. 60 THE JOINT FORCES OF CSIRO & SCION
Wood Density 25 Pub. 244 Estimates Range 0 -1. 21, Mean=0. 59, Median=0. 64, THE JOINT FORCES OF CSIRO & SCION
Mf. A 5 Pub. 122 Estimates Range 0 -1. 15, Mean=0. 61, Median=0. 62 THE JOINT FORCES OF CSIRO & SCION
Mo. E 8 Pub. 134 Estimates Range 0. 04 -0. 85, Mean=0. 49, Median=0. 51 THE JOINT FORCES OF CSIRO & SCION
Summary of Heritability THE JOINT FORCES OF CSIRO & SCION
Strategies dealing with adverse genetic correlation · Develop economic breeding objective (weights) · Dissect genetic base of the adverse correlation and developing purging strategy THE JOINT FORCES OF CSIRO & SCION
Developing breeding objective Breeding for profit – which is the best tree? ? $12 $10 $7 THE JOINT FORCES OF CSIRO & SCION $9 $14
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 Link Resource Wood properties THE JOINT FORCES OF CSIRO & SCION Relate Structural grades Product
Breeding objective traits and their economic weights MAI SWE BRS MOE unit m 3 mm/m mm MPa Plantations EW $/ha 291 58 248 0 Sawmill EW $/m 3 -0. 18 1. 19 1. 97 10. 5 Integrated EW $/ha 416 194 620 977 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 4 Genetic bases of negative genetic correlation 4 Developing breeding and deployment strategies using a VIRTUE GENE Deterministic model Locus based model · Silviculture + Genetics THE JOINT FORCES OF CSIRO & SCION
Thanks THE JOINT FORCES OF CSIRO & SCION
- Slides: 20