{"title":"伊朗 Cichorieae（菊科）一些属的古生物学调查。","authors":"Maneezheh Pakravan, Seyed Reza Safavi, Roghaieh Zarei, Zahra Tavakoli, Farrokh Ghahremaninejad, Maryam Noroozi, Zahra Nazem Bokaee, Mina Alimadadi, Najmeh Ghodusian, Fatemeh Hosseini, Fereshteh Moradi","doi":"10.1002/jemt.24663","DOIUrl":null,"url":null,"abstract":"<p><p>The pollen morphology of 33 species belonging to the genera Lactuca, Launaea, Cicerbita, Sonchus, Condrilla (tribe Cichorieae: Asteraceae) from Iran were studied with light and electron microscopies. The pollen grains of the investigated taxa are almost oblate-spherical to prolate-spherical, the shapes are circular in equatorial view, hexagonal in polar view, only Sonchus species are triangular or quadrangular in polar view, isopolar, symmetrical and trizonocolporate, except Sonchus and Chondrilla species, which have tri- to tetrazonocolporate pollen grains, and echinolophate. The size and number of spines in the polar area and the number of spines in the paraporal ridges and equatorial ridges proved to be the most taxonomically authentic characteristics in this study. Three pollen types were distinguished, as in alignment with previous studies. Cluster analysis by Ward method based on 10 quantitative morphological characteristics of pollen grains revealed that the species could be grouped based on the pollen characteristics. Moreover, three species of Cicerbita including Cicerbita scoparia (Rech. f. & Köie) Kitam, C. rechingeriana (Tuisl) Coșkunç., M. Güzel & N. Kilian and C. microcephala (DC.) M. Güzel, Coșkunç. & N. Kilian were recorded for the first time in Iran. Although the characteristics of the pollen grains were useful for distinguishing the species in sub-tribes, in some cases, this did not confirm recent phylogenetic results. The pollen characteristics described in this study provide data that may be useful for future systematic studies aiming to complete the knowledge on Cichorieae species. RESEARCH HIGHLIGHTS: In the present study, the pollen morphology of 33 species belonging to five genera of the Cichorieae are investigated with scanning electron microscopy and 12 species are analyzed for the first time. The cluster analysis based on the quantitative morphological characteristics of pollen grains revealed that the species could be grouped based on the pollen characteristics. In addition, three species of Cicerbita are reported for the first time in Iran.</p>","PeriodicalId":18684,"journal":{"name":"Microscopy Research and Technique","volume":null,"pages":null},"PeriodicalIF":2.0000,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Palynological investigation of some genera of Cichorieae (Asteraceae) in Iran.\",\"authors\":\"Maneezheh Pakravan, Seyed Reza Safavi, Roghaieh Zarei, Zahra Tavakoli, Farrokh Ghahremaninejad, Maryam Noroozi, Zahra Nazem Bokaee, Mina Alimadadi, Najmeh Ghodusian, Fatemeh Hosseini, Fereshteh Moradi\",\"doi\":\"10.1002/jemt.24663\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The pollen morphology of 33 species belonging to the genera Lactuca, Launaea, Cicerbita, Sonchus, Condrilla (tribe Cichorieae: Asteraceae) from Iran were studied with light and electron microscopies. 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Kilian and C. microcephala (DC.) M. Güzel, Coșkunç. & N. Kilian were recorded for the first time in Iran. Although the characteristics of the pollen grains were useful for distinguishing the species in sub-tribes, in some cases, this did not confirm recent phylogenetic results. The pollen characteristics described in this study provide data that may be useful for future systematic studies aiming to complete the knowledge on Cichorieae species. RESEARCH HIGHLIGHTS: In the present study, the pollen morphology of 33 species belonging to five genera of the Cichorieae are investigated with scanning electron microscopy and 12 species are analyzed for the first time. The cluster analysis based on the quantitative morphological characteristics of pollen grains revealed that the species could be grouped based on the pollen characteristics. 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引用次数: 0
摘要
利用光学显微镜和电子显微镜研究了伊朗的 33 个物种的花粉形态，这些物种隶属于 Lactuca 属、Launaea 属、Cicerbita 属、Sonchus 属和 Condrilla 属（菊科 Cichorieae）。所研究类群的花粉粒几乎呈扁球形至长球形，其形状在赤道视图中为圆形，在极视图中为六角形，只有 Sonchus 种类的花粉粒在极视图中为三角形或四角形，花粉粒呈等极性、对称和三宗小球状，只有 Sonchus 和 Chondrilla 种类的花粉粒呈三宗至四宗小球状，花粉粒呈棘状。在这项研究中，极区刺的大小和数量以及副脊和赤道脊刺的数量被证明是分类学上最真实的特征。与之前的研究一致，本研究区分了三种花粉类型。根据花粉粒的 10 个定量形态特征，采用 Ward 方法进行聚类分析，结果表明可以根据花粉特征对物种进行分组。此外，在伊朗首次记录到了 Cicerbita 的三个物种，包括 Cicerbita scoparia (Rech. f. & Köie) Kitam、C. rechingeriana (Tuisl) Coșkunç., M. Güzel & N. Kilian 和 C. microcephala (DC.) M. Güzel, Coșkunç. & N. Kilian。尽管花粉粒的特征有助于区分亚族中的物种，但在某些情况下，这并不能证实最近的系统发育结果。本研究中描述的花粉特征提供的数据可能有助于未来的系统研究，以完善对 Cichorieae 物种的了解。研究亮点：本研究利用扫描电子显微镜对属于 Cichorieae 属 5 个属的 33 个物种的花粉形态进行了研究，并首次对 12 个物种进行了分析。基于花粉粒定量形态特征的聚类分析显示，可根据花粉特征对物种进行分组。此外，伊朗首次报道了 Cicerbita 的 3 个物种。
Palynological investigation of some genera of Cichorieae (Asteraceae) in Iran.
The pollen morphology of 33 species belonging to the genera Lactuca, Launaea, Cicerbita, Sonchus, Condrilla (tribe Cichorieae: Asteraceae) from Iran were studied with light and electron microscopies. The pollen grains of the investigated taxa are almost oblate-spherical to prolate-spherical, the shapes are circular in equatorial view, hexagonal in polar view, only Sonchus species are triangular or quadrangular in polar view, isopolar, symmetrical and trizonocolporate, except Sonchus and Chondrilla species, which have tri- to tetrazonocolporate pollen grains, and echinolophate. The size and number of spines in the polar area and the number of spines in the paraporal ridges and equatorial ridges proved to be the most taxonomically authentic characteristics in this study. Three pollen types were distinguished, as in alignment with previous studies. Cluster analysis by Ward method based on 10 quantitative morphological characteristics of pollen grains revealed that the species could be grouped based on the pollen characteristics. Moreover, three species of Cicerbita including Cicerbita scoparia (Rech. f. & Köie) Kitam, C. rechingeriana (Tuisl) Coșkunç., M. Güzel & N. Kilian and C. microcephala (DC.) M. Güzel, Coșkunç. & N. Kilian were recorded for the first time in Iran. Although the characteristics of the pollen grains were useful for distinguishing the species in sub-tribes, in some cases, this did not confirm recent phylogenetic results. The pollen characteristics described in this study provide data that may be useful for future systematic studies aiming to complete the knowledge on Cichorieae species. RESEARCH HIGHLIGHTS: In the present study, the pollen morphology of 33 species belonging to five genera of the Cichorieae are investigated with scanning electron microscopy and 12 species are analyzed for the first time. The cluster analysis based on the quantitative morphological characteristics of pollen grains revealed that the species could be grouped based on the pollen characteristics. In addition, three species of Cicerbita are reported for the first time in Iran.
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