Bursa Uludağ University, Bursa, Türkiye.
Balıkesir University, Balıkesir, Türkiye.
Micron. 2024 Aug;183:103647. doi: 10.1016/j.micron.2024.103647. Epub 2024 May 16.
Pollen morphology and nutlet structures of some Prunella L. taxa were examined in detail by light microscopy (LM) and scanning electron (SEM) microscopy. Pollen grains of Prunella vary in size from small to large (Polar axis (P) = 22.25-66.04 µm, Equatorial diameter (E) = 17.56-75.64 µm). The shape of pollen grains are suboblate to prolate (P/E = 0.78-1.75) and the aperture structure is hexacolpate with granular membranes in apocolpium. Examinations of exine ornamentation show that pollen grains were recognized as bireticulate ornamentation with varying characteristics of the primary muri and secondary reticulum and four subtypes were identified. Nutlet measurements of four taxa were taken and their surfaces were examined by using SEM. While pollen ornamentations are represented by different characters among taxa, it has been concluded that nutlet surfaces do not have distinctive characters among investigated taxa. Pollen morphology of 7 taxa of Prunella has been investigated in detail for the first time.
通过光学显微镜（LM）和扫描电子显微镜（SEM）详细观察了一些夏枯草属（Prunella L.）分类群的花粉形态和小坚果结构。夏枯草属的花粉粒大小从小到大不等（极轴（P）=22.25-66.04μm，赤道直径（E）=17.56-75.64μm）。花粉粒的形状为近扁球形到长球形（P/E=0.78-1.75），孔裂结构为六沟，具颗粒膜。外壁纹饰的研究表明，花粉粒被认为是具细网状纹饰，其初级纹饰和次级网状纹饰特征各异，共鉴定出 4 种亚型。对 4 个分类群的小坚果进行了测量，并通过 SEM 观察了它们的表面。虽然花粉纹饰在分类群之间表现出不同的特征，但研究表明，小坚果表面在研究的分类群之间没有独特的特征。首次详细研究了 7 种夏枯草属的花粉形态。
