【摘要】 对于欧洲稠李Padus avium Mill.与亚洲稠李P.asiatica kom.这两个种的划分及其在我国的地理分布持有不同见解.为此,我们试图通过不同地区植物花粉形态的研究,来澄清这个问题.观察结果表明;它们的共同特征为,花粉粒长球形,具三孔沟,条状纹饰.差异表现为,前者的条纹长而分枝多,平行排列,条脊突起较高,在沟间具少量穿孔;而后者条纹弯曲,条脊突起较矮,沟间具一行穿孔,二者区别显著.因此,我们认为Komarov(1941)把Prunus padusVar.pubescens Rgl.＆Tilig.提升为Padus asiatica kom.是成立的.在新疆所产稠李,应为欧洲种,而我国华北及东北新所产稠李,应为亚洲稠李.更多还原

【Abstract】 We have investigated the pollen grains morphologies of Padus avium and P. asiatica from different districts, attempting to clear some ambiguous view points upon the differentiation of these two species and their distribution in China.We observed that both pollen grains of the two species are in long spherical shape, with three - pore - grooves and striped grainings on the surface. However, the grainings of pollens from Padus avium are much longer, more branchy, ranging more straight with higher ridges than that from P. asiatica. The results support the proposal, promoting P. asiatica to be a species (komarov, 1941). We suggest that the Xinjang P. avium belong to European species; species from the North-East and the North of china belong to Asia species.更多还原