| タイトル |
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Pollen morphology of Rhododendron L. and related genera and its taxonomic significance
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| 作成者 |
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| アクセス権 |
open access |
| 主題 |
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Other
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Pollen morphology
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Other
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Rhododendron
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Other
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Infrageneric classification
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Other
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Generic delimitation
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Other
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Rhodoreae
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NDC
479
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| 内容注記 |
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Abstract
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Pollen grains of 40 taxa of Rhododendron L. and its closely related genera, Therorhodion L. and Menziesia Sm., were examined by means of light microscopy and scanning electron microscopy (SEM), or SEM alone. Pollen tetrads of R. japonicum, R. schlippenbachii, R. tsusiophyllum and M. pentandra were examined also withtransmission electron microscopy. In all the genera studied, 3-colporate, oblate tosuboblate pollen grains are arranged in tetrahedral tetrads. The apocolpial pollen wall is composed of the exine - well developed tectum, columellae, foot layer and endexine, and the intine. On the contrary, the septal exine is composed of fragmentary tectum, and the two foot layers of adjacent grains are sometimes connected by columellae and endexine. Among different infrageneric taxa only the subsect. Ledum (sect. & subgen. Rhododendron) was characterized by small sized pollen tetrads, higher 2f/D value and rugulate exine sculpture. The pollen morphological characteristics overlapped each other in all other taxa. Thus palynological features showed little usefulness in the infrageneric classification of Rhododendron, however, they gave additional support to the individualgeneric status of Menziesia and Tsusiophyllum, and the sister relationship between Rhododendron and Therorhodion.
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| 出版者 |
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The Bangladesh Association of Plant Taxonomists
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| 日付 |
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| 言語 |
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| 資源タイプ |
journal article |
| 出版タイプ |
VoR |
| 資源識別子 |
HDL
http://hdl.handle.net/2115/55269
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| 関連 |
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isIdenticalTo
DOI
https://doi.org/10.3329/bjpt.v20i2.17393
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| 収録誌情報 |
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PISSN
1028-2092
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EISSN
2224-7297
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en
Bangladesh Journal of Plant Taxonomy
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巻20
号2
開始ページ185
終了ページ199
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| ファイル |
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| コンテンツ更新日時 |
2023-07-26 |
