• Key message

Wavy grain, a rare figure type of wood, leads to highly priced timber in Acer pseudoplatanus L. The influence of this trait on growth performance and its causes are not known. Analyzed wavy and straight grain sycamore maple progenies show comparable growth performance in a field trial. Stability of wavy grain after vegetative propagation is confirmed and genetic inheritance indicated.

• Context

Wavy grain is a rare figure type of wood resulting from undulating fiber growth that leads to a decorative and highly priced timber in Acer pseudoplatanus L. with top positions on auction sales. Nevertheless, neither the influence of this trait on growth performance is known, nor have the causes been disentangled.

• Aims

Our objectives were to find out if wavy grain figure influences growth parameters essential for log quality and to gain insight into the causes of wavy grain by the analysis of a progeny trial and a seed orchard.

• Methods

In a progeny trial with 30-year-old F-1-offspring from selected wavy grained and straight grained trees, trunk diameter, tree height, and trunk shape were evaluated. Additionally, 21 trees of the trial and selected plus tree-grafts of a seed orchard were felled and analyzed for occurrence and intensity of wavy grain structure.

• Results

No effect of the wavy and straight grain parentage on growth was observed in the progeny trial. Of the felled trees, over 30% showed evidence of wavy grain compared to rare occurrence in natural stands. Wood structure analysis of plus tree scions confirmed the stability of wavy grain after vegetative propagation.

• Conclusion

Wavy grain seems to be genetically inherited, and there seems to be no statistically significant difference in commercially relevant traits in the progeny. This highlights the value of including wavy grain as a desired attribute in breeding systems of maple.

中文翻译：

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子代试验中波浪纹无花果枫树（Acer pseudoplatanus L.）的生长性能和木材结构

• 关键信息

波浪纹是一种稀有的数字类型的木材，会导致 Acer pseudoplatanus L中的高价木材。该性状对生长性能的影响及其原因尚不清楚。在田间试验中，经分析的波浪形和直纹无花果枫木后代表现出可比的生长性能。营养繁殖后波浪状谷物的稳定性得到确认，并表明了遗传遗传。

• 语境

波浪纹是稀有的数字类型木材，其起因是纤维的起伏不断增长，最终导致Acer pseudoplatanus L.中装饰性和价格高昂的木材在拍卖会上排名第一。但是，既不知道这种特性对生长性能的影响，也没有弄清原因。

•目的

我们的目标是找出波浪形谷物形状是否对原木质量必不可少的生长参数产生影响，并通过对子代试验和种子园的分析来了解波浪形谷物的成因。

• 方法

在后代试验中，从选定的波浪纹和直纹树中选育了30岁的F-1后代，评估了树干直径，树高和树干形状。此外，砍伐了该试验园的21棵树木和种子园的精选树木，并分析了其波状结构的发生和强度。

• 结果

在子代试验中未观察到波浪状和直纹的亲子关系对生长的影响。与天然林中罕见的树木相比，在砍伐的树木中，超过30％的树木显示出波浪状的迹象。加树接穗的木材结构分析证实了营养繁殖后波浪纹的稳定性。

• 结论

波浪纹似乎是遗传遗传的，后代中与商业相关的性状似乎没有统计学上的显着差异。这凸显了将波浪纹作为枫树育种系统中所需属性的价值。