Micromorphology of glandular structures in Echium vulgare L. flowers
The micromorphology of selected elements of Echium vulgare L. flowers was investigated, with special attention to the structure of the nectaries and the stigma of the pistil as well as types of trichomes occurring on the surface of the calyx. The nectary had the shape of an uneven disc located aroun...
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| Format: | Article |
| Language: | English |
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Polish Botanical Society
2012-12-01
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| Series: | Acta Agrobotanica |
| Subjects: | |
| Online Access: | https://pbsociety.org.pl/journals/index.php/aa/article/view/1702 |
| _version_ | 1818329282012774400 |
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| author | Elżbieta Weryszko-Chmielewska Mirosława Chwil |
| author_facet | Elżbieta Weryszko-Chmielewska Mirosława Chwil |
| author_sort | Elżbieta Weryszko-Chmielewska |
| collection | DOAJ |
| description | The micromorphology of selected elements of Echium vulgare L. flowers was investigated, with special attention to the structure of the nectaries and the stigma of the pistil as well as types of trichomes occurring on the surface of the calyx. The nectary had the shape of an uneven disc located around the lower region of the four-parted ovary of the pistil. The glandular cells formed a tier with a height of 330 μm and a radial width of 144 μm. Nectar was secreted onto the nectary surface through anomocytic stomata located at the level of other epidermal cells. Most of the stomata were open, with a different dimension of the pore. Their largest number was observed at the base of the nectary, and 462 stomata were noted on the whole surface of the nectary. The cuticle on the surface of the guard cells formed fine, circular striae. The subsidiary cells formed striated cuticular ornamentation, with the striae arranged radially in the direction of the stoma, whereas on the surface of other epidermal cells the striae formed an arrangement with different directions. The epidermis on the surface of the stigma formed regularly arranged papillae with a fan-shaped, expanded upper part which had corrugated outer walls, whereas the base of the cell formed a widened small column. The epidermis of the abaxial part of the calyx was covered by numerous non-glandular trichomes of different length which were made up of one or several cells. The glandular trichomes in the epidermis of the calyx grew with smaller density compared to the protective trichomes, and they were composed of a 1-2-celled stalk and a glandular head. |
| first_indexed | 2024-12-13T12:45:35Z |
| format | Article |
| id | doaj.art-0bc39d24d48c45a0bb73e51506338a2c |
| institution | Directory Open Access Journal |
| issn | 2300-357X |
| language | English |
| last_indexed | 2024-12-13T12:45:35Z |
| publishDate | 2012-12-01 |
| publisher | Polish Botanical Society |
| record_format | Article |
| series | Acta Agrobotanica |
| spelling | doaj.art-0bc39d24d48c45a0bb73e51506338a2c2022-12-21T23:45:30ZengPolish Botanical SocietyActa Agrobotanica2300-357X2012-12-01612253410.5586/aa.2008.0301322Micromorphology of glandular structures in Echium vulgare L. flowersElżbieta Weryszko-Chmielewska0Mirosława Chwil1University of Life Sciences in LublinUniversity of Life Sciences in LublinThe micromorphology of selected elements of Echium vulgare L. flowers was investigated, with special attention to the structure of the nectaries and the stigma of the pistil as well as types of trichomes occurring on the surface of the calyx. The nectary had the shape of an uneven disc located around the lower region of the four-parted ovary of the pistil. The glandular cells formed a tier with a height of 330 μm and a radial width of 144 μm. Nectar was secreted onto the nectary surface through anomocytic stomata located at the level of other epidermal cells. Most of the stomata were open, with a different dimension of the pore. Their largest number was observed at the base of the nectary, and 462 stomata were noted on the whole surface of the nectary. The cuticle on the surface of the guard cells formed fine, circular striae. The subsidiary cells formed striated cuticular ornamentation, with the striae arranged radially in the direction of the stoma, whereas on the surface of other epidermal cells the striae formed an arrangement with different directions. The epidermis on the surface of the stigma formed regularly arranged papillae with a fan-shaped, expanded upper part which had corrugated outer walls, whereas the base of the cell formed a widened small column. The epidermis of the abaxial part of the calyx was covered by numerous non-glandular trichomes of different length which were made up of one or several cells. The glandular trichomes in the epidermis of the calyx grew with smaller density compared to the protective trichomes, and they were composed of a 1-2-celled stalk and a glandular head.https://pbsociety.org.pl/journals/index.php/aa/article/view/1702floral nectariesstigmacalyxtrichomesEchium vulgareBoraginaceae |
| spellingShingle | Elżbieta Weryszko-Chmielewska Mirosława Chwil Micromorphology of glandular structures in Echium vulgare L. flowers Acta Agrobotanica floral nectaries stigma calyx trichomes Echium vulgare Boraginaceae |
| title | Micromorphology of glandular structures in Echium vulgare L. flowers |
| title_full | Micromorphology of glandular structures in Echium vulgare L. flowers |
| title_fullStr | Micromorphology of glandular structures in Echium vulgare L. flowers |
| title_full_unstemmed | Micromorphology of glandular structures in Echium vulgare L. flowers |
| title_short | Micromorphology of glandular structures in Echium vulgare L. flowers |
| title_sort | micromorphology of glandular structures in echium vulgare l flowers |
| topic | floral nectaries stigma calyx trichomes Echium vulgare Boraginaceae |
| url | https://pbsociety.org.pl/journals/index.php/aa/article/view/1702 |
| work_keys_str_mv | AT elzbietaweryszkochmielewska micromorphologyofglandularstructuresinechiumvulgarelflowers AT mirosławachwil micromorphologyofglandularstructuresinechiumvulgarelflowers |