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    吴世雄, 刘艳红, 张利民, 尚福强, 谭成权. 不同产地东北红豆杉幼苗迁地保护的生长稳定性分析[J]. 北京林业大学学报, 2018, 40(12): 27-37. DOI: 10.13332/j.1000-1522.20180331
    引用本文: 吴世雄, 刘艳红, 张利民, 尚福强, 谭成权. 不同产地东北红豆杉幼苗迁地保护的生长稳定性分析[J]. 北京林业大学学报, 2018, 40(12): 27-37. DOI: 10.13332/j.1000-1522.20180331
    Wu Shixiong, Liu Yanhong, Zhang Limin, Shang Fuqiang, Tan Chengquan. Growth stability analysis of ex situ conservation of Taxus cuspidata seedlings from different sources[J]. Journal of Beijing Forestry University, 2018, 40(12): 27-37. DOI: 10.13332/j.1000-1522.20180331
    Citation: Wu Shixiong, Liu Yanhong, Zhang Limin, Shang Fuqiang, Tan Chengquan. Growth stability analysis of ex situ conservation of Taxus cuspidata seedlings from different sources[J]. Journal of Beijing Forestry University, 2018, 40(12): 27-37. DOI: 10.13332/j.1000-1522.20180331

    不同产地东北红豆杉幼苗迁地保护的生长稳定性分析

    Growth stability analysis of ex situ conservation of Taxus cuspidata seedlings from different sources

    • 摘要:
      目的通过控制试验研究东北红豆杉宽甸、本溪、和龙、汪清、穆棱5个产地幼苗的生长特征,旨在探讨东北红豆杉在潜在分布区的引种适应性,为其迁地保护提供理论基础。
      方法试验分别在山东、北京、辽宁、吉林4个试验点观测3年生苗,对其苗高、地径、冠幅等7个性状进行多地点联合分析和多重比较。另外,用AMMI模型对东北红豆杉苗高进行基因型(G)、环境(E)和基因型与环境(G×E)互作分析,比较不同产地东北红豆杉幼苗在不同生境下生长的稳定性。
      结果(1) 山东试验点各产地幼苗地径、侧枝数、最长侧枝长和当年抽梢长生长量表现最好,分别高于北京试验点的3.77、1.88、10.35和1.30倍。各试验点内的表型性状变异系数平均高达30%以上,说明幼苗更具有很高的遗传分化。(2)从方差分量来看,苗高、地径、冠幅、当年抽梢长生长量在地点间的方差分量分别为62.89%、64.37%、32.65%、52.34%,远大于其他差异来源,说明地点效应对东北红豆杉生长影响最大。平均保存率由高到低分别为97.49%(吉林)>92.16%(辽宁)>89.92%(山东)>85.64%(北京)。
      结论(1) 东北红豆杉生长性状除地径生长量在产地与试验地互作效应上差异不显著外,其他都具有极显著的产地、地点以及产地×地点的互作效应。山东、北京、辽宁试验点生长较好的是汪清产地幼苗;吉林试验点生长较好的是本溪产地幼苗。(2)和龙产地幼苗生长良好且稳定,适合在4个试验点进行大面积迁地保护;宽甸产地幼苗在4个试验点都表现最差且保存率低,不适合迁地保护。山东生长比北京好,表明可以对东北红豆杉进行往南迁地保护,前提必须做好产地幼苗筛选试验。

       

      Abstract:
      ObjectiveThe seedling growth characteristics about five sources of Kuandian, Benxi, Helong, Wangqing and Muling of Taxus cuspidata were studied through the control experiment, aiming at exploring the adaptability of Taxus cuspidata in potential distribution areas, which will provide theoretical basis for ex situ conservation.
      MethodExperiments were conducted at four pilot sites in Shandong Province of eastern China, Beijing City, Liaoning Province and Jilin Province of northeastern China. Three-year-old seedlings were planted. Multi-site joint analysis and multiple comparisons of seven traits (including seedling height, basal diameter, and crown width, etc.) were conducted. In addition, the interactions of genotype (G), environment (E), and genotype with environment (G×E) were used to analyze the height of Taxus cuspidata in the AMMI model to compare the growth stability of Taxus cuspidata from different sources in different habitats.
      Result(1) The diameter of the seedlings, the number of lateral branch, the maximum length of lateral branch and the length of shoot in current year were the best in Shandong Province, which were 3.77 times, 1.88 times, 10.35 times and 1.30 times higher than the Beijing test site. The coefficient of variation of phenotypic traits averaged over 30% in each test site, indicating that seedlings had higher genetic differentiation. (2) From the aspect of variance, the variance components of height, basal diameter, crown width and length of shoot in current year were 62.89%, 64.37%, 32.65%, and 52.34%, which were much larger than the other sources. It is indicated that the location effect had the greatest impact on the growth of Taxus cuspidata. The average preservation rate was 97.49% (Jilin)>92.16% (Liaoning)>89.92% (Shandong)>85.64% (Beijing).
      Conclusion(1) The growth of basal diameter was not significantly different in the interaction between sources and experimental sites. The growth of other growth traits showed significant differences (P < 0.01) between sources and locations, as well as the interactions between sources and locations. Good performance of growth in Shandong Province, Beijing City, and Liaoning Province is the source of Wangqing, and the better growing in Jilin pilot is Benxi source. (2) The Helong source which grow well and stably is suitable for large-scale ex situ conservation in 4 pilot sites. The Kuandian sources have the worst performance in four pilot sites and the preservation rate is lower than other sources, which is not suitable for ex-situ conservation. The distribution area in Shandong Province is better than Beijing, indicating that the Taxus cuspidata can be moved to the south, and prerequisites must be done in the seed source screening test.

       

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