Studies on pollen morphology of selected species of Annonaceae from Thailand |
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| Authors: | Yunyun Shao |
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| Affiliation: | 1. Key Laboratory of Plant Resource Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China;2. Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China;3. College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China |
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| Abstract: | The pollen morphology of 49 species and one variety, representing 18 genera of the family Annonaceae from Thailand, is described and illustrated based on observations using scanning electron microscopy (SEM). The pollen grains of Anaxagorea show double-spheres as a result of the intine extrusion. The palynological evidence confirms the close relationship of Dasymaschalon, Desmos and Asian Friesodielsia. Decussate tetrads in Goniothalamus and coexisting tetragonal, rhomboidal, T-shaped, tetrahedral and decussate tetrads in Mitrephora are reported. Pollen morphology is consistent within Huberantha, Marsypopetalum and Monoon, but is more diverse in Polyalthia sensu stricto Pollen unit, shape, size, ornamentation and aperture number reaffirm the great diversity among and within genera in Annonaceae. |
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| Keywords: | ornamentation diversity tetrads SEM |
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