Department of Botany and Forest Habitats, Poznań University of Life Sciences, Poznań, Poland.
Department of Botany, Poznań University of Life Sciences, Poznań, Poland.
PLoS One. 2022 Aug 29;17(8):e0273743. doi: 10.1371/journal.pone.0273743. eCollection 2022.
The pollen morphology was studied in 25 taxa of the genus Spiraea L. The aims of this study were to describe the pollen morphology and variability and to determine whether the pollen features of alien, expansive or invasive Spiraea species differ from those of other taxa. The species of Spiraea were analysed for nine quantitative pollen traits as well as the following qualitative traits: the outline, shape and exine ornamentation. In total, 750 pollen grains were measured. Based on the pollen key exine ornamentation features, then individual Spiraea species were distinguished, while the other species formed groups of usually 2-3, up to 8 species. The most important pollen features included length, width and course of grooves and striae, presence or absence of perforations, as well as their number and diameter. The most variable taxa for all the nine biometric traits jointly were S. ×billardii, S. veitchii, S. nipponica and S. cana. The pollen of the invasive S. tomentosa differed from the other taxa studied, unlike the other invasive species (S. douglasii and S. japonica).
本文对 25 种绣线菊属植物的花粉形态进行了研究。本研究旨在描述花粉形态和变异性，并确定外来、扩张或入侵的绣线菊属物种的花粉特征是否与其他分类群的花粉特征不同。对绣线菊属植物的 9 个定量花粉特征以及以下定性特征进行了分析：花粉轮廓、形状和外壁纹饰。共测量了 750 粒花粉。基于花粉外壁纹饰特征，可区分单个绣线菊种，而其他种则通常形成 2-3 个组，最多可达 8 个种。最重要的花粉特征包括沟和条纹的长度、宽度和走向、穿孔的存在与否以及穿孔的数量和直径。对于所有 9 个生物计量特征，最具变异性的分类群是 S. ×billardii、S. veitchii、S. nipponica 和 S. cana。入侵种 S. tomentosa 的花粉与研究的其他分类群不同，而与其他入侵种（S. douglasii 和 S. japonica）不同。
