| Pollen Morphology of Eight Genera of the Subtribe Mutisiinae Less. sensu Bremer （Compositae） from Asia |
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| 作者姓名： | Na-Na LIN Hong WANG De-Zhu LI Stephen BLACKMORE |
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| 作者单位： | [1]Laboratory of Biodiversity and Plant Biogeography, Kunming Institute of Botany, the Chinese Academy of Sciences, Kunming 650204, China [2]Graduate School of the Chinese Academy of Sciences, Beijing 100039, China [3]Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, Scotland, UK |
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| 基金项目： | Supported by the National Program for Research and Development Infrastructure and Facility Development （2004DKA30430）.Acknowledgements The authors are grateful to thecurator of the herbarium of Kunming Institute of Botany, the Chinese Academy of Sciences, for allowing us to obtain pollen materials from herbarium specimens; we are also indebted to Dr Ding WU and Mr Xi-Kai FAN for technical assistances. |
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| 摘 要： | The pollen morphology of 28 species and one variety representing eight genera of the subtribe Mutisiinae Less. sensu Bremer （Compositae） was investigated by scanning electron microscopy （SEM） and light microscopy. The pollen grains are usually radically symmetrical, isopolar, and tricolporate. The shape varies from spheroidal to subprolate in equatorial view and is three-lobed circular in polar view. Based on exine sculpturing observed under SEM, the pollen grains can be divided into three types： （i） type Ⅰ, with macrogranulate sculpture; （ii） type Ⅱ, with a finely granulate sculpture; and （iii） type Ⅲ with spiny sculpture. The palynological data showed that the Macroclinidium Maxim. was remarkably distinguished from those of the other seven genera. The variation of pollen characteristics within the Mutisiinae in Asia is little at species level, but it proves some useful information for studying the relationships among genera and it has an important significance in further understanding the evolutionary history of Mutisiinae.
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| 关 键 词： | 花粉 形态学 亚洲 扇形植物 扫描电子显微镜 |
| 收稿时间： | 2004-11-15 |
| 修稿时间： | 2004-11-152005-03-21 |
Pollen Morphology of Eight Genera of the Subtribe Mutisiinae Less. Sensu Bremer (Compositae) from Asia |
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| Authors: | Na-Na LIN Hong WANG De-Zhu LI Stephen BLACKMORE |
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| Institution: | Laboratory of Biodiversity and Plant Biogeography, Kunming Institute of Botany, the Chinese Academy of Sciences;, Kunming 650204, China; Graduate School of the Chinese Academy of Sciences;, Beijing 100039, China; 3. Royal Botanic Garden Edinburgh;, Edinburgh EH3 5LR, Scotland, UK |
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| Abstract: | Abstract: The pollen morphology of 28 species and one variety representing eight genera of the subtribe Mutisiinae Less. sensu Bremer (Compositae) was investigated by scanning electron microscopy (SEM) and light microscopy. The pollen grains are usually radically symmetrical, isopolar, and tricolporate. The shape varies from spheroidal to subprolate in equatorial view and is three-lobed circular in polar view. Based on exine sculpturing observed under SEM, the pollen grains can be divided into three types: (i) type I, with macrogranulate sculpture; (ii) type II, with a finely granulate sculpture; and (iii) type III, with spiny sculpture. The palynological data showed that the Macroclinidium Maxim. was remarkably distinguished from those of the other seven genera. The variation of pollen characteristics within the Mutisiinae in Asia is little at species level, but it proves some useful information for studying the relationships among genera and it has an important significance in further understanding the evolutionary history of Mutisiinae.
(Managing editor: Wei WANG) |
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| Keywords: | Asia Compositae Mutisiinae pollen morphology |
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