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題 名 | Contributions to the Study of Microsporogenesis in Calamus L. (Arecaceae)=Calamus L. (Arecaceae)小孢子發育的研究 |
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作 者 | Krishna Kumar, H. N.; Ramaswamy, S. N.; Ramaswamy, S. N.; Krishna Kumar, H. N.; | 書刊名 | Taiwania |
卷 期 | 48:3 2003.09[民92.09] |
頁 次 | 頁180-193 |
分類號 | 377.02 |
關鍵詞 | 花藥壁; 花粉; Calamus; Anther wall; Pollen; |
語 文 | 英文(English) |
DOI | 10.6165/tai.2003.48(3).180 |
中文摘要 | 至今仍未見相關於Calamus 屬(Arecaceae) 胚胎學的研究,本研究即觀察Calamus屬五種植物的小孢子囊與雄配子體的發育。結果得知其小孢子囊的營養層為分泌型且細胞具有雙核,花粉母細胞經連續的分裂而形成雙排與四分體型的小孢子。C. nagbettai 、C. Stoloniferus 與C. travancoricus 成熟的花粉粒於藥囊開裂散佈時為二細胞時期,然而C. gambleii 與C. rotangs 則為三細胞時期 |
英文摘要 | The genus Calamus in the Arecaceae has so far remained embryologically unknown. The present work on the development of the microsporangium and male gametophyte in 5 species of Calamus (Arecaceae) is the first investigation. The tapetum is of secretory type and its cells become binucleate. The pollen mother cells undergo successive divisions to produce isobilateral and tetrahedral tetrads. The mature pollen grains in C. nagbettai, C. stoloniferus and C. travancoricus are 2-celled at the time of shedding. In C. gamblei and C. rotang they are, however, 3-celled when shed. |
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