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首页> 外文期刊>植物研究雑誌 >Pollen Morphological Studies on the Genus Cirsium Mill.(Asteraceae) in Iran
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Pollen Morphological Studies on the Genus Cirsium Mill.(Asteraceae) in Iran

机译：伊朗菊科植物菊粉的花粉形态学研究

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摘要

Pollen morphology was studied in 23 Iranian species of Cirsium (Asteraceae) representing five sections, Cirsium, Cephalonoplos, Echenais, Epitrachys and Pseudoepitrachys by light and scanning electron microscopy. Among them five species are endemic toIran and their pollen data are new to science. Pollen grains were radially symmetrical, isopolar, trizonocolporate and with echinate sculpturing. The tectum is microperforate, microreticulate or microgranulate in sculpture. The shape of pollen grains issuboblate to oblate-spheroidal in the equatorial view and is circular to triangular in polar view. The spines are conical with broad base and pointed or rounded tip. The number of spine rows between colpi varies from 4 to 5 among the species. ANOVA testperformed for pollen characteristics showed no significant difference except for equatorial axis length, indicating that pollen data may not be used for delimitation or discrimination of those sections. PCA analysis showed the importance of echinae characteristics along with equatorial axis length, distance between two colpi and polar axis length in species delimitation. Clustering methods and the ordination plot of the PCA analysis support the affinity in the sect. Pseudoepitrachys and the distinctionof the sect. Cephalonoplos from other sections, but did not support the grouping of the remaining sections from pollen morphology.
机译：通过光学和扫描电子显微镜研究了23个伊朗种的菊科（菊科）的花粉形态，这些科目代表了五个部分：菊科，头孢菌属，艾氏菌属，附生和假表生。其中五种是伊朗特有的，其花粉数据对科学来说是新的。花粉颗粒呈放射状对称，等极性，三唑甲酸酯并带有棘突雕刻。雕塑中的盖是微孔的，微网状的或微颗粒的。花粉颗粒的形状在赤道图中为近扁圆形至扁球形，而在极视图中为圆形至三角形。棘为圆锥形，基部宽阔，尖端或圆形。在物种之间，colpi之间的脊柱排数从4到5不等。对花粉特性进行的ANOVA测试显示，除​​赤道轴长度外，无显着差异，这表明花粉数据可能无法用于这些部分的定界或区分。 PCA分析显示了紫锥花特性以及赤道轴长度，两个柯比之间的距离和极轴长度在物种划界中的重要性。 PCA分析的聚类方法和排序图支持该派系中的亲和力。假上皮和门派的区别。来自其他部分的头孢霉，但不支持将花粉形态的其余部分分组。

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