| 象牙参种子的解剖学和组织化学研究 |
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| 引用本文： | 唐源江,廖景平. 象牙参种子的解剖学和组织化学研究[J]. 植物研究, 2001, 21(1): 53-56 |
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| 作者姓名： | 唐源江 廖景平 |
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| 作者单位： | 中国科学院华南植物研究所, 广州 510650 |
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| 基金项目： | 国家自然科学基金!资助项目 (39870 0 87)，中国科学院系统与进化生物学特别支持费，华南植物研究所所长基金! (10 -98-10 2 ) |
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| 摘 要： | 象牙参种子解剖学和组织化学的研究结果表明, 种子包括假种皮、种皮、外胚乳、内胚乳和胚。假种皮没有完全包被种子, 由约4~5 层薄壁细胞构成。种皮可以分为外种皮、中种皮和内种皮。外种皮由1 层表皮细胞构成, 细胞壁明显增厚;中种皮包括下皮层、半透明细胞层和3~4层细胞的色素层, 下皮层和色素层细胞均充满红棕色色素;内种皮由1 层体积小、壁局部增厚的砖形薄壁细胞构成。种子在珠孔端分化出珠孔领、孔盖和种阜状结构, 珠孔领为同形型, 孔盖不具石细胞硬层。合点区内种皮出现缺口, 缺口间充满合点区色素细胞, 其整体轮廓成新月形。外胚乳可分为厚区与薄区两部分, 外胚乳细胞壁平直, 细胞内充满淀粉。内胚乳细胞主要含蛋白质, 也有少量脂类物质, 细胞界限不清楚。胚棒状, 两端略膨大, 含大量脂类物质, 也含蛋白质和多糖。
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| 关 键 词： | 象牙参 种子 解剖学 组织化学 |
| 收稿时间： | 2000-03-21 |
| 修稿时间： | 2000-03-21 |
ANATOMY AND HISTOCHEMISTRY OF THE SEEDS OF ROSCOEA PURPUREA |
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| TANG Yuan-jiang LIAO Jing-ping. ANATOMY AND HISTOCHEMISTRY OF THE SEEDS OF ROSCOEA PURPUREA[J]. Bulletin of Botanical Research, 2001, 21(1): 53-56 |
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| Authors: | TANG Yuan-jiang LIAO Jing-ping |
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| Affiliation: | South China Institute of Botany, Academia Sinica, guangzhou 510650 |
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| Abstract: | The results of the anatomy and histochemistry of the seeds of Roscoea purpurea show that the seed consists of aril, seed coat, perisperm, endosperm and embryo. The seeds are incompletely packed by the aril which comprises 4~5 layers of parenchymatous cells. The seed coat can be divided into exotesta, mesotesta, and endotesta. The exotesta consists of one layer of epidermal cells that their walls are obviously thickened. The mesotesta includes hypodermis(with one layer of cells), translucent cell layer(with one layer of cells) and pigment cell layer with 3~4 layers of pigment cells. The cells of the hypodermis and pigment cell layer are filled red-brown coloured pigment. The endotesta comprises one layer of brick-shaped parenchymatous cells with partially thickened. Micropylar collar, operculum and caruncle-like structure are differentiated in the micropylar region. The micropylar collars belong to homomorphic type. Operculum is without sclerotic cell. A cap appears in the endotesta of the chalazal region and is filled with a group of chalazal pigment cells. The outline of the pigment cell group is a crescent. The perisperm has two parts. The perisperm cells with flat walls is filled up with starch grains. The endosperm cells mainly contain proteins, but also contain a few lipids. Their cell walls are obscure. The embryo is bar-shaped, its both ends slightly swell. The embryo cells contains a great number of lipids, some proteins and ploysaccharides. |
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| Keywords: | Roscoea purpurea Seed Anatomy Histochemistry |
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