Contributions to the Study of Microsporogenesis in Calamus L. (Arecaceae)
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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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National Taiwan University
2003-09-01
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| Series: | Taiwania |
| Subjects: | |
| Online Access: | http://tai2.ntu.edu.tw/taiwania/abstract.php?type=abstract&id=29 |
| Summary: | 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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| ISSN: | 0372-333X 0372-333X |