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首页> 外文期刊>Acta Horticulturae >Anatomical characterization of leaves of Anthurium affine Schott and Anthurium raimundii Mayo, Haigh & Nadruz (Araceae) with ornamental purpose.
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Anatomical characterization of leaves of Anthurium affine Schott and Anthurium raimundii Mayo, Haigh & Nadruz (Araceae) with ornamental purpose.

机译：具有观赏目的的红掌仿射Schott和红掌Mayo，Haigh和Nadruz（天南星科）的叶片解剖学特征。

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Anthurium affine Schott and Anthurium raimundii Mayo, Haigh & Nadruz are two native species of northeast Brazil and have high potential for use as ornamental plants. They belonging to the Araceae family and can survive in stressful environmental conditions. The aim of this work was to describe the anatomy of these plants and possible correlation to environmental aspects which may be important factors in the leaf durability. Fully expanded leaves of plants selected from the Embrapa Germplasm Bank of Ornamental Tropical Plants located in Fortaleza-CE were fixed in FAA, dehydrated in ethanol, subjected to pre-infiltration solution, infiltration solution and inserted in Leica Historesin. The material was cut into semi-automatic microtome with a thickness of 10 micro m and the sections were stained with Toluidine Blue for structural analysis. For histochemical analysis, free hand cuts were obtained from the fixed material. Phloroglucinol acid was used for detection of lignin and phenolic compounds, Sudan III was used for detection of lipids, and for the detection of starch Lugol was used. The leaves were subjected to sodium hypochlorite for analysis of the epidermis in paradermic order. The two species had similar anatomical features. Both have a uniseriate epidermis with paracytic stomata in abaxial face and are completely covered by a thick cuticle. The mesophyll consists of chlorenchyma. In A. affine and A. raimundii the vascular bundles are of the collateral type, completely surrounded by fibers, which are concentrated more strongly in front of the phloem. The parenchyma of the midrib and petiole are rich in starch. Many idioblasts were observed, containing phenolic compounds and calcium oxalate crystals. The thick cuticle may prevent excessive water loss by evapotranspiration and the large amount of stored energy reserves can help the plant to survive periods of dryness, typical of northeastern Brazil.
机译：红掌仿射Schott和Anthurium raimundii Mayo，Haigh和Nadruz是巴西东北部的两个原生物种，具有用作观赏植物的巨大潜力。它们属于天南星科，可以在恶劣的环境条件下生存。这项工作的目的是描述这些植物的解剖结构以及与环境方面的可能关联性，这些方面可能是影响叶片耐久性的重要因素。从位于福塔雷萨-CE的观赏热带植物Embrapa种质库中选出的植物完全膨胀后的叶片固定在FAA中，在乙醇中脱水，进行预浸液，浸液并插入Leica Historesin中。将该材料切成厚度为10微米的半自动切片机，并将切片用甲苯胺蓝染色以进行结构分析。为了进行组织化学分析，从固定的材料上获得了手工切割。间苯三酚酸用于检测木质素和酚类化合物，苏丹三用于检测脂质，淀粉用于检测Lugol。将叶片用次氯酸钠处理，以表皮顺序分析表皮。这两个物种具有相似的解剖特征。两者的背面都具有单生的表皮和胞旁气孔，并且被厚的表皮完全覆盖。叶肉由绿藻组成。在A. affine和A. raimundii中，维管束是侧支型，完全被纤维包围，纤维在韧皮部前面更集中。中脉和叶柄的薄壁组织富含淀粉。观察到许多成纤维细胞，含有酚类化合物和草酸钙晶体。厚的角质层可以防止因蒸散作用而造成的过多水分流失，而大量储存的能量储备可以帮助植物度过干旱（巴西东北部典型的干旱时期）。

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