Fagus sylvatica in Europe is expected to be severely affected by the ongoing climate change. In this article, seed adaptive traits, in terms of morphology and germination, of F. sylvatica populations of different postglacial lineage and intrapopulation genetic diversity were evaluated. Eight plots from two geographical provenances, Evros and Drama, were selected. Provenance shaped both morphology and germination patterns, but the effect was more pronounced on germination. Seeds from Drama were larger and heavier than those from Evros but exhibited a higher degree of dormancy and slower germination. High among-plots variability on morphology and germination was also observed, especially in Evros. This higher variability was consistent with the higher level of genetic diversity observed at genomic and chloroplast DNA markers at small or larger spatial scales from previous published studies on the same plots. Results suggested the existence of different seed adaptation strategies, mainly between provenances, as a result of possible adaptation to different environmental conditions, whereas a possible influence of a generally complex pattern of admixture between different beech subspecies and postglacial lineages could not be excluded.

中文翻译：

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希腊东北部水青冈种群的种子适应性状

预计欧洲的金缕梅将受到持续不断的气候变化的严重影响。在本文中，种子自适应性状，形态和发芽的计算，F. sylvatica评估了不同的冰川后世系和种群内遗传多样性的种群。从两个地理起源Evros和Drama中选择了八个地块。种源影响形态和发芽模式，但对发芽的影响更为明显。Drama的种子比Evros的种子更大，更重，但表现出更高的休眠度和更慢的发芽率。还观察到了形态和发芽率的高度差异，尤其是在Evros。这种较高的变异性与先前在同一地块上发表的研究在较小或较大的空间尺度上在基因组和叶绿体DNA标记物上观察到的更高水平的遗传多样性相一致。结果表明存在不同的种子适应策略，主要是在种源之间，