ABSTRACT Ninety families from six provenances of Eucalyptus loxophleba subsp. gratiae were established near Brookton, Western Australia, and Condobolin, New South Wales, and 89 of these same families were established at Monarto, South Australia. All three trials were assessed at age three years for biomass productivity and the trial at Brookton was assessed for leaf cineole concentration. Provenance performance across the sites was most similar between Monarto and Condobolin, while the ranking of provenances was more divergent between those sites and Brookton. Presence or absence of unstable families may change provenance ranking. Additive variance was not significant for the Condobolin trial. Heritability of green biomass at age three years was ĥ2 = 0.19 ± 0.06 and ĥ2 = 0.16 ± 0.05 at Monarto and Brookton, respectively. The heritability of leaf cineole concentration at Brookton was ĥ2 = 0.50 ± 0.08 and whole-tree cineole yield, ĥ2 = 0.11 ± 0.04. The cross-site genetic correlation between Brookton and Monarto was rg = 0.55 ± 0.20, suggesting the presence of some genotype × environment interaction. Removing the six most unstable families resulted in a cross-site genetic correlation of rg = 0.97 ± 0.25. Estimated mean gains from selection scenarios treating Brookton and Monarto as representing two separate environments or as a single environment differed by about 5.0%. The exclusion of six unstable families reduced that difference to 1.4%. Selection on biomass alone may result in a slight increase in total cineole yield per tree but, in this experiment, it resulted in a reduction in mean leaf cineole concentration. Leaf cineole concentration used in conjunction with biomass may be a useful selection criterion in the absence of data for total mass of cineole produced per tree.

中文翻译：

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在三年生桉树亚种中选择生物量和桉树脑生产的来源变异、遗传参数和潜在收益。免费后代试验

摘要 来自 Eucalyptus loxophleba subsp 的六个来源的九十个家庭。gratiae 在西澳大利亚布鲁克顿和新南威尔士康多博林附近建立，其中 89 个相同的家庭在南澳大利亚莫纳托建立。所有三项试验都在三岁时评估了生物质生产力，布鲁克顿的试验评估了叶桉树脑的浓度。Monarto 和 Condobolin 之间的站点出处表现最为相似，而这些站点和 Brookton 之间的出处排名差异更大。不稳定家庭的存在或不存在可能会改变出处排名。Condobolin 试验的附加方差不显着。在莫纳托和布鲁克顿，三年龄绿色生物量的遗传力分别为 ĥ2 = 0.19 ± 0.06 和 ĥ2 = 0.16 ± 0.05。布鲁克顿叶桉树脑浓度的遗传力为 ĥ2 = 0.50 ± 0.08，整棵树桉树脑产量为 ĥ2 = 0.11 ± 0.04。Brookton 和 Monarto 之间的跨位点遗传相关性为 rg = 0.55 ± 0.20，表明存在某种基因型 × 环境相互作用。去除六个最不稳定的家族导致 rg = 0.97 ± 0.25 的跨站点遗传相关性。将 Brookton 和 Monarto 视为代表两个独立环境或单一环境的选择方案的估计平均收益相差约 5.0%。排除六个不稳定的家庭后，这一差异减少到 1.4%。仅选择生物量可能会导致每棵树的桉树脑总产量略有增加，但在本实验中，它导致平均叶桉树脑浓度降低。