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M ILLING Making it Relevant genetic improvement of softwoods Dr. - PowerPoint PPT Presentation

May 05, 2023 •30 likes •240 views

M ILLING M ILLING Making it Relevant genetic improvement of softwoods Dr. Charles Sorensson Horizon2 Ltd G ROWING G ROWING B REEDING B REEDING Australian Forest Genetics Conf. Hobart, Tasmania 11-14 April 2007 1 Compressed r = -

  1. M ILLING M ILLING Making it Relevant – genetic improvement of softwoods Dr. Charles Sorensson Horizon2 Ltd G ROWING G ROWING B REEDING B REEDING Australian Forest Genetics Conf. Hobart, Tasmania 11-14 April 2007 1

  2. Compressed r = - 0.3 distribution & slanted Visualising Adverse Inter-Trait Correlations 2

  3. Adverse Inter-Trait Correlations important challenge to Radiata for DBH:Density complex 4-trait, min. required gains mostly 10% 1.5% 1.0% % in Pop Radiata Pine 0.5% 0.0% -1 -0.75 -0.5 -0.25 0 0.25 0.5 0.75 1 InterTrait R case 1 case 2 case 3 3

  4. How Break Inter-Trait Correlations? one way is to select & deploy individuals (VF) 20% I I I I V 15% GF14 10% GF19 5% VEL gain age GF26 3.5 km/s 0% 12½ yrs ST300 -5% 67 random clones -10% -15% I I I I I I I I I I -20% -10% -5% 0% 5% 10% DBH gain 290 mm 4 DBH

  5. Horizon2’s Vision of Future � SE Varietal Pines • 20-year history in clonal forestry, 40 yrs in nurseries • Major nursery holdings delivering 30 M plants annually • Heavy R&D emphasis SE plant delivery systems • Huge older OG clonal resources • 3,500 SE genotypes in 45 trials in 3 countries (10% to age 8) • Current portfolio 40 commercial SE genotypes half are strongly improved in growth and MOE • Performance (10 traits) marketed using 0-30+ scale for seed orchard parents 5

  6. Delivering Gains to Wood Users (People) ultimate objective of “breeding” (broad sense) $$$ Processing (“milling”) Use Deploy Growing (“forestry”) Time Package Nursery Breeding Capture 6

  7. Defining Relevancy of “Breeding” sensitive to time and risk Rate of Uptake Rate of Significant R = X to Forest Value Capture Plus: • sustainability & genetic diversity • future product market flexibility • ability to promote stability in the forest industry 7

  8. NZ MAF Statistics suggest good UPTAKE deployment of GF20+ doubled over past decade 80% 70% GF20+ 60% means 50% control- 40% pollinated GF20+ (CP) 30% 20% 10% 0% How good was 1996 1998 2000 2002 2004 2005 VALUE capture? Wood quality? 8

  9. A Fundamental Dilemma(?) particularly evident in NZ’s North Island Cut Cost? or Raise Productivity? Noone disputes that genetics offers the PROMISE of greater productivity... 9

  10. Conservative silviculture boosts log quality but at the expense of productivity Rotation age is negatively correlated to the relevancy of “ breeding” Breeders need to CHALLENGE the effectiveness of conservative silviculture with elite genetics 10

  11. Customer Attitudes to Risk showing up in forest valuations “ A risk-avoiding person does not choose the same plan as a risk-seeking or a risk-neutral person” Pukkala and Kangas (1996) For. S ci. 42:198-205 Risk-avoiding persons will re-consider given “facts” but may otherwise treat concepts as whimsical 11

  12. Valuation & Demonstration two key challenges to enhance relevancy of breeding Valuation show that added cost of genetics increases (& related DSS profitability (risk adjusted) tools) Demonstration show genetics reliably delivers significant, even transformational, value 12

  13. Log Velocity Strongly Impacts S-log Value in Mills Not yet incorporated into log grades $15.00 $10.00 NZD$ change (log $/m3) $5.00 S20 $0.00 S30 S40 -$5.00 VEL thresholds -$10.00 -$15.00 2400 2600 2800 3000 3200 3400 3600 3800 4000 Log VEL (m/s) 13

  14. Other Inadequacies of Genetic Valuation DSS barrier to policy development for improved genetics � growth modeling of unusual growth and/ or taper � models often lack breeder variables � MRI typically begin at age 10 post-thinning � log grades are “ crude baskets” - poor linkage to conversion and final product outturn 14

  15. Example Using Silvis focus on lumber grade, not log grade $200 $180 Same size, branching, and density $160 $140 Impact of improved stiffness Butt Log (UP) RTL ($/m3) $120 Log 2 $100 Log 3 Log 4 $80 Log 5 $60 $40 $20 $- 0 2 4 6 8 10 12 E7ring (juvenile wood stiffness) 15

  16. SILVIS v2.07 good agreement generally with Ivkovich et al. 2006 Ability to grade MS G boards avoided the crudeness of log- grades and their pricing steps Board downgraded to Reman by large knot 16

  17. NZ foresters initially resisted each new offering from genetics (OP, CP, cuttings, clones) DEMONSTRATION FORESTS MAY PRECEDE UPTAKE Commercial Foresters visiting “Fatso” in the Genetic Gains Test in Kaingaroa Cpt. 1210 (1968) 17 AGE 37

  18. Horizon2 Clonal Forest Demos key aspect of our customer education program Clone 5-123 Age 8 (below) and 10 (right) Wood stiffness (VEL) proved 50 % more uniform within clone 18

  19. FOREST+ An International Programme of Best Practices Forest Demos � R&D centre designed & managed, including central database and result dispersion � S O seedlot, OP, CP, VF in block plots for growth & uniformity modeling � Elite genetics to ensure forest excellence to owners � Dispersed site coverage (GxE) international � (cont.) 19

  20. FOREST+ (cont.) � Aggressive vs. conservative regimes � S cheduled valuations (MRI, stumpage, conversion) � Remote sensing, spatial analysis, GIS � Industry and government partners � Marketed on cost sharing, scale, knowledge, genetics � Timely (deforestation, climate change) IS THE IDEA VIABLE? WHO WOULD LEAD? 20

  21. We can improve relevancy of breeding breeders significantly improve crops – that is not disputed � The promise of genetics, greater ‘ quality yield’ , some argue also is also promised by conservative silviculture � S uperior genetics is particularly pertinent in forestry under threat from higher land rentals and energy costs � Ability to limit rotation length has been central to the concept of successful plantations � S uperior genetic products exist – it is time to impress on investors and policy makers what they can do ACTION: start an international “ Forest+” programme of “ best practices” forest demos 21

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