BREEDING OBJECTIVES FOR PULP PRODUCTION OF EUCALYPTUS-GLOBULUS UNDER DIFFERENT INDUSTRIAL COST STRUCTURES
BREEDING OBJECTIVES FOR PULP PRODUCTION OF EUCALYPTUS-GLOBULUS UNDER DIFFERENT INDUSTRIAL COST STRUCTURES
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DOI：
10.1139/x93-085
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发表时间：
1993-04-01
影响因子：
2.2
通讯作者：
KANOWSKI, PJ
中科院分区：
文献类型：
--
作者：
BORRALHO, NMG;COTTERILL, PP;KANOWSKI, PJ
蓝桉纸浆生产的育种目标的定义，使用一个简单的利润方程与干体积，木材密度和纸浆产量每吨纸浆生产的货币成本节约。每个性状的经济重要性计算了五个不同的纸浆和林业行业的情况下，有很大的不同的成本结构。选择指数集成的体积生长，木材密度和纸浆产量的各种组合进行了比较，以满足不同的育种目标的能力。在育种目标和成本结构的研究范围内，结果惊人的一致性。显然，选择指数综合体积，木材密度，纸浆产量提供了最准确的选择和最大化的遗传增益的育种目标。仅包括体积的指数节省的成本总是远远低于一半，有时低至四分之一，与综合体积和木材性状的指数节省的成本一样多。在所考虑的案例研究中，E.在葡萄牙，这些成本节约对公司的盈利能力产生了重大影响。
Breeding objectives were defined for pulp production of Eucalyptus globulus Labill, using a simple profit equation relating the monetary cost savings per tonne of pulp produced with stem volume, wood density, and pulp yield. The economic importance of each trait was calculated for five different pulp and forestry industry scenarios with widely different cost structures. Selection indices integrating various combinations of volume growth, wood density, and pulp yield were compared for their ability to meet the different breeding objectives. There was surprising consistency in results across the range of breeding objectives and cost structures studied. It was clear that selection indices integrating volume, wood density, and pulp yield gave the most accurate selection and maximized genetic gain in breeding objectives. The cost savings from indices that included only volume were always much less than one-half, and sometimes as low as one-quarter, as much as those from indices integrating volume and wood traits. In the case study considered, E. globulus in Portugal, these cost savings had substantial implications for company profitability.