牡丹种间花粉粒形态差异性比较

Pollen morphological comparison of three subshrubby peony species in Paeonia L.

利用扫描电子显微镜对三种牡丹不同品种的花粉形态进行了观察研究,报道了花粉形态特征和种间差异,探讨了花粉形态特征在种间演化的分类学意义。结果表明,牡丹属牡丹组成熟花粉粒形态大小和外壁纹饰存在着种间差异。

Morphological characteristics, of three peony species, Paeonia rockii; Paeonia suffruticosar and Paeonia ostii were compared using slanning electron microscope including seven vavisties. The taxonomic significance of these characteristics and evolufional relationship among these three species were discussed.The results showed there were certain interspecific differences among the three species on the basis of the morphology, size and exine sculpture of pollen grains.