Seed Morphometry of Native Indonesian Orchids in the Genus Dendrobium
| Autor: | Edy Setiti Wida Utami, Sucipto Hariyanto, Intan Ayu Pratiwi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Long axis Article Subject Science Prolate spheroid Orange (colour) Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Dendrobium Botany Medicine Air space Epiphyte General Agricultural and Biological Sciences Research Article 010606 plant biology & botany General Environmental Science |
| Zdroj: | Scientifica, Vol 2020 (2020) Scientifica |
| Popis: | In this study, seeds of 10 species of epiphytic orchids were examined using light and scanning electron microscope. Quantitative and qualitative characters were analyzed. All the presently investigated seeds showed are transparent with visible embryo and remarkable embryo color variations (such as pale yellow, light yellow, shiny yellow to yellow, orange, and white). The species showed two groups in seed shape (fusiform and filiform), prolate and oval-shaped embryo, positioned at the center of the long axis and near apical pole. Embryo in prolate shaped and near apical pole position was only in D. antennatum. Based on our investigation, there are variations in seed and embryo volume as well as percentage air space in different taxa of orchids. The highest air space percentages were found in D. leporinum. According to the ornamentation of testa cells, 3 types of seeds were discovered in this genus. Additionally, the clear variation in the testa ornamentation pattern includes the species of D. leporinum, where the testa cells were in the medial regular rectangles, but in the apical and basal pole they are polygonal and irregularly oriented; the testa cells of D. antennatum are polygonal and irregularly oriented and those of D. purpureum are longitudinally oriented with regular rectangles. |
| Databáze: | OpenAIRE |
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