Developing breeding objectives for radiata pine structural wood production. I. Bioeconomic model and economic weights
| Autor: | Milo Ivković, Mike B. Powell, Tony A. McRae, Harry X. Wu |
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| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Canadian Journal of Forest Research. 36:2920-2931 |
| ISSN: | 1208-6037 0045-5067 |
| Popis: | Economic breeding objectives were developed for production of radiata pine (Pinus radiata D. Don) structural timber in Australia. Production systems of eight companies, including plantation growers, sawmills, and integrated-system companies, were examined. A bioeconomic model linking the breeding-objective traits mean annual increment (MAI), stem sweep, average branch size, and modulus of elasticity (MoE) with production-system components was constructed using data obtained from industry and published sources. For a plantation grower the most important trait for improvement was MAI (31% improvement of net present value after a 10% trait improvement). For a sawmill the most important trait was MoE (29% improvement of profit after a 10% trait improvement). For an integrated-system company the two most important traits were MoE and MAI (24% and 21% improvement of net present value after a 10% trait improvement, respectively). There was a high correlation between breeding objectives of plantation growers within a region (rG > 0.99), but a negative correlation between breeding objectives of plantation growers and sawmills (rGS = –0.32) and only an intermediate correlation (rGI < 0.65) between those of growers and integrated-system companies. |
| Databáze: | OpenAIRE |
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