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| Format: | Artículo científico |
| Language: | es |
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Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
2018
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| Online Access: | https://www.redalyc.org/articulo.oa?id=685773782001 |
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| _version_ | 1866813302005301248 |
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| author | MARÍA S. DIAZ |
| author_facet | MARÍA S. DIAZ |
| contents | CARACTERIZACIÓN DEL FRUTO Y LA SEMILLA DE RUPRECHTIA APETALA (POLYGONACEAE) EN RELACIÓN CON LA ENTRADA DE AGUA Y LA GERMINACIÓN MARÍA S. DIAZ MARÍA L. MOLINELLI Biología Achene imbibition morphology native tree Ruprechtia apetala Ruprechtia apetala Wedd. (Polygonaceae), “field apple”, is a tree native to South America, cited as ornamental, medicinal and for reforestation. The objectives of this work were to characterize the fruit and seed morphology, to determine the water entry area, and to evaluate seed germination. Fruits were collected in Luyaba (Córdoba, Argentina). Histological sections and stains followed standard protocols, and observations were made with light and stereoscopic microscopy. Germination was evaluated in achenes with sepals, achenes without sepals, and seeds sensu stricto, at 25°C or 20 <=> 30°C, with photoperiod of 8/16 h or permanent darkness. The results showed that fruits have an epicarp with non-lignified macroesclerides and tannins in their lumen, the mesocarp has 4-8 layers of parenchyma, and the endocarp has a single layer. Seeds have an episperm with papillose pattern, an amyloid and ruminated endosperm, and a foliated and folded embryo in axial position. Epistasis and hypostasis were observed. Water entrance occurs through the remains of the style in the achene or through the episperm in the seed. The maximum germination percentage (84%) was obtained both in achenes with sepals and in those without sepals at 20 <=> 30°C, with a photoperiod 8/16 h. It was shown that sepals and pericarp do not affect germination. 2018 artículo científico 0524-0476 https://www.redalyc.org/articulo.oa?id=685773782001 10.30972/bon.2712982 es http://www.redalyc.org/revista.oa?id=6857 Bonplandia application/pdf Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Bonplandia (Argentina) Num.1 Vol.27 |
| format | Artículo científico |
| id | redalyc_685773782001 |
| language | es |
| publishDate | 2018 |
| publisher | Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) |
| spellingShingle | CARACTERIZACIÓN DEL FRUTO Y LA SEMILLA DE RUPRECHTIA APETALA (POLYGONACEAE) EN RELACIÓN CON LA ENTRADA DE AGUA Y LA GERMINACIÓN MARÍA S. DIAZ Biología Achene imbibition morphology native tree Ruprechtia apetala CARACTERIZACIÓN DEL FRUTO Y LA SEMILLA DE RUPRECHTIA APETALA (POLYGONACEAE) EN RELACIÓN CON LA ENTRADA DE AGUA Y LA GERMINACIÓN MARÍA S. DIAZ MARÍA L. MOLINELLI Biología Achene imbibition morphology native tree Ruprechtia apetala Ruprechtia apetala Wedd. (Polygonaceae), “field apple”, is a tree native to South America, cited as ornamental, medicinal and for reforestation. The objectives of this work were to characterize the fruit and seed morphology, to determine the water entry area, and to evaluate seed germination. Fruits were collected in Luyaba (Córdoba, Argentina). Histological sections and stains followed standard protocols, and observations were made with light and stereoscopic microscopy. Germination was evaluated in achenes with sepals, achenes without sepals, and seeds sensu stricto, at 25°C or 20 <=> 30°C, with photoperiod of 8/16 h or permanent darkness. The results showed that fruits have an epicarp with non-lignified macroesclerides and tannins in their lumen, the mesocarp has 4-8 layers of parenchyma, and the endocarp has a single layer. Seeds have an episperm with papillose pattern, an amyloid and ruminated endosperm, and a foliated and folded embryo in axial position. Epistasis and hypostasis were observed. Water entrance occurs through the remains of the style in the achene or through the episperm in the seed. The maximum germination percentage (84%) was obtained both in achenes with sepals and in those without sepals at 20 <=> 30°C, with a photoperiod 8/16 h. It was shown that sepals and pericarp do not affect germination. 2018 artículo científico 0524-0476 https://www.redalyc.org/articulo.oa?id=685773782001 10.30972/bon.2712982 es http://www.redalyc.org/revista.oa?id=6857 Bonplandia application/pdf Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Bonplandia (Argentina) Num.1 Vol.27 |
| title | CARACTERIZACIÓN DEL FRUTO Y LA SEMILLA DE RUPRECHTIA APETALA (POLYGONACEAE) EN RELACIÓN CON LA ENTRADA DE AGUA Y LA GERMINACIÓN |
| topic | Biología Achene imbibition morphology native tree Ruprechtia apetala |
| url | https://www.redalyc.org/articulo.oa?id=685773782001 |