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首页> 外文期刊>Journal of Arboriculture >Branch morphology impacts compartmentalization of pruning wounds
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Branch morphology impacts compartmentalization of pruning wounds

机译：分支形态影响修剪伤口的分隔

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摘要

Branch diameter relative to the trunk diameter (aspect ratio) impacted the amount of discolored wood that developed in the trunk after branch removal in seedling-propagated red maple (Acer rubrum L.) and live oak (Quercus virginiana L.). More discoloration resulted from removing codominant stems than removing branches that were small compared to trunk diameter. Limbs with aspect ratios greater than 0.39 and 0.59, for live oak and red maple, respectively, resulted in severe trunk discoloration afterremoval. The presence of branch collars was an indicator of strong compartmentalization potential in both species. Branches having pith that was continuous with trunk pith developed more extensive discoloration after removal than those without pith connections for both red maple and live oak. Pith connections could be predicted in both species based on the presence of branch collars and angle of branch attachment. There was more variability in discoloration among individual live oak trees than among red maples. Cambium dieback, which is often associated with removing codominant stems, was not affected by any of the branch characteristics measured including aspect ratio.
机译：相对于树干直径的树枝直径（长宽比）影响在繁殖苗的红枫树（Acer rubrum L.）和活橡树（Quercus virginiana L.）中除去树枝后树干中变色木材的数量。与除去树干直径相比较小的分支相比，除去共生的茎导致更多的变色。活橡树和红枫树的长宽比分别大于0.39和0.59的四肢导致去除后树干严重变色。分支项圈的存在表明这两个物种均具有较强的区室化潜力。与红髓和活橡树的无髓连接的那些相比，具有与树干髓连续的髓的分支在去除后比没有髓连接的分支出现更大的变色。可以根据分支环的存在和分支连接的角度预测两种物种的髓连接。橡树个体之间的变色差异要大于红枫树。冈比亚枯萎病通常与去除优势茎相关，不受任何分支特征（包括长宽比）的影响。

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