Abstract The second cycle of cooperative breeding and testing of coastal Douglas-fir in western Oregon and Washington was started around 1992. By 2020 the bulk of testing is nearing completion, while the latest program in southern Oregon and NW California is scheduled to run through 2035. A total of 109 first-generation programs were consolidated into nine second- cycle breeding and testing cooperatives (with 15 testing zones); 136 tests are planned, of which 120 have already been established. Between five and eight tests are established per trial series. Trials established to date have contained from 50 to 283 full-sib crosses. In total, the Douglas-fir breeding effort will be comprised of over 2,900 crosses, of which 2,500 have already been established in the field. A total of about 349,000 test trees are to be planted, with over 310,000 already planted. Tests typically get three main measurements when the trees are 3 (or 4), 7 and 12 years old from seed. (1) Age-3 or 4: progression of budburst, on a 1 to 5 rating score, when roughly 50 % of the seedlings have broken bud, on one or two sites per trial series. (2) Age-7: height (height pole), dbh, stem sinuosity in the second internode from the top, number of incidences of stem forking, number of incidences of ramicorn branching and (3) Age-12: height (vertex), dbh, stem sinuosity in the second internode from the top, number of incidences of stem forking, number of incidences of ramicorn branching, second flushing yes\no in current year, and wood acoustic velocity (in some trial series).

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美国太平洋西北部沿海花旗松的二轮合作育种和测试：策略、实施和操作方面

摘要 俄勒冈州西部和华盛顿州沿海花旗松的第二轮合作育种和试验于 1992 年左右开始。到 2020 年大部分试验已接近完成，而俄勒冈州南部和加利福尼亚州西北部的最新项目计划运行到 2035 年。 . 共计109个第一代项目整合为9个二期育种试验合作社（15个试验区）；计划进行 136 项测试，其中 120 项已经建立。每个试验系列建立五到八次测试。迄今为止建立的试验已包含 50 到 283 个全同胞杂交。花旗松育种工作总共将包括 2,900 多个杂交种，其中 2,500 个已在田间建立。共种植约34.9万棵试验树，其中超过310棵，000 已经种下了。当树木从种子到 3 年（或 4 年）、7 年和 12 年时，测试通常会获得三个主要测量值。(1) 3 岁或 4 岁：每个试验系列的 1 或 2 个地点，当大约 50% 的幼苗断芽时，萌芽进展，评分为 1 到 5。(2) Age-7：高度（高度极点）、dbh、茎从上数第二个节间弯曲度、茎分叉发生次数、苎麻分枝发生次数和（3）Age-12：高度（顶点） , dbh, 从上数第二个节间的茎弯曲度, 茎分叉发生次数, 苎麻分枝发生次数, 当年第二次冲水是\否, 木材声速(在一些试验系列中)。当大约 50% 的幼苗断芽时，每个试验系列的一到两个地点的芽破进展，评分为 1 到 5。(2) Age-7：高度（高度极点）、dbh、茎从上数第二个节间弯曲度、茎分叉发生次数、苎麻分枝发生次数和（3）Age-12：高度（顶点） , dbh, 从上数第二个节间的茎弯曲度, 茎分叉发生次数, 苎麻分枝发生次数, 当年第二次冲水是\否, 木材声速(在一些试验系列中)。当大约 50% 的幼苗断芽时，每个试验系列的一到两个地点的芽破进展，评分为 1 到 5。(2) Age-7：高度（高度极点）、dbh、茎从顶部起第二个节间的弯曲度、茎分叉发生次数、苎麻分枝发生次数和（3）Age-12：高度（顶点） , dbh, 从上数第二个节间的茎弯曲度, 茎分叉发生次数, 苎麻分枝发生次数, 当年第二次冲水是\否, 木材声速(在一些试验系列中)。