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Structure of mucilage containing cells in achene pericarp of some species of Artemisia (Asteraceae)

机译:某些蒿属植物骨髓粘膜细胞的结构(Asteraceae)

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The structure of mucilage containing cells in the achene pericarp of some Artemisia species was studied with a transmission electron microscope. Several types of the mucilage containing cells are found in the exocarp. The most essential differencesare revealed in the cell contents. Some contain silica compounds in the mucilage, others contain cellulose lamellae often arranged in piles. On transverse and longitudinal sections the mucilage containing cells differ from the main exocarp cells by swollen electron-transparent outer cell walls with no silica compounds. The cells with cellulose lamellae are arranged in complexes. Such complexes in different Artemisia species contain the species-specific number of such cells encased by a common mother cell wall. "Mucilisation" or "non-mucilisation" of the outer cell walls is found to be caused by 3 factors: (1) lack of a hardening substance (silica), (2) absence or presence of cuticle on the outer cell walls and (3) a character of the cell contents.
机译:用透射电子显微镜研究了一些蒿属物种的亚骨髓内粘膜细胞的结构。在Exocarp中发现了几种类型的含粘膜细胞。细胞内容中揭示了最重要的差异。一些含有二氧化硅化合物在粘液中,其他含有纤维素薄片通常以堆叠布置。在横向和纵向部分上,含有溶胀的电池的粘液通过溶胀的电子透明外部电池壁不同,没有二氧化硅化合物。具有纤维素薄膜的细胞以配合物排列。不同蒿属植物中的这种络合物含有由普通母细胞壁包封的特异性数量的这些细胞。发现外部细胞壁的“粘合”或“非粘合剂”是由3因素引起的:(1)缺乏硬化物质(二氧化硅),(2)外部细胞壁上的角质层的缺失或存在( 3)细胞内容物的特征。

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