Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae)
A morphological and anatomical analysis of Schinopsis balansae Engl. was performed, using optical and scanning electron microscopy. The main objective was to obtain data from the flowers of this species, usually described as polygamous-dioecious. The results shows that the flowers described as funct...
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Facultad de Ciencias Agrarias-UNCuyo
2022
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| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5658 |
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I11-R107article-56582022-10-18T17:31:05Z Floral morphology and anatomy of Schinopsis balansae (Anacardiaceae) Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae) Gonzalez, Ana Maria dioecia estaminodios flores nectario Schinopsis balansae vascularización dioecy staminoids flowers nectary Schinopsis balansae vascularization A morphological and anatomical analysis of Schinopsis balansae Engl. was performed, using optical and scanning electron microscopy. The main objective was to obtain data from the flowers of this species, usually described as polygamous-dioecious. The results shows that the flowers described as functionally perfect are structurally pistillate; although have five staminoids, they are smaller and lack sporogenous tissue. In the staminate flowers, the structure described as vestigial pistil is the excrescence of the apex of the receptacle, covered by nectariferous tissue. Thus, it is right to describe S. balansae as dioecious species. The study of the vascularization of male flowers shows that the reduction process is complete, since not even the vascular traces for the pistil persists. The gynoecium of pistillate flowers is pseudomonomerous with one functional carpel, one ovule and one dorsal style and stigmata, and two vestigial carpels, represented only by individual lateral style/stigma. Both types of flowers present an intrastaminal nectary disc, with nectarostomatas for nectar release. The analysis of the anatomic structure of S. balansae provides data that are consistent with those found in other studied genus of Anacardioideae group in the Anacardiaceae family. Se realizó el análisis morfo-anatómico de Schinopsis balansae Engl. con microscopía óptica y electrónica de barrido a fin de obtener datos de las flores de esta especie, definida como polígamo-dioica. Los resultados muestran que las flores estructuralmente perfectas son funcionalmente pistiladas, si bien presentan cinco estaminodios, los mismos carecen de tejido esporógeno; mientras que en las flores estaminadas la estructura denominada pistilo vestigial no es más que la excrecencia del ápice del receptáculo, cubierta por tejido nectarífero. De este modo, lo correcto es describir S. balansae como especie dioica. El estudio de la vascularización de las flores estaminadas muestra que el proceso de reducción es completo, ya que ni siquiera persisten los haces vasculares del pistilo. El gineceo de las flores pistiladas es pseudomonómero, con un carpelo funcional, un estilo/estigma dorsal y un óvulo; además posee dos carpelos vestigiales representados por sendos estilo/estigma laterales. Ambos tipos de flores presentan un disco nectarífero intraestaminal, con nectarostomatas para la salida del néctar. El análisis de la estructura anatómica de S. balansae brinda datos que concuerdan con los encontrados en otros géneros estudiados de la subfamila Anacardioideae de la familia Anacardiaceae. Facultad de Ciencias Agrarias-UNCuyo 2022-10-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5658 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 45 No. 2 (2013): July-December; 101-113 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 45 Núm. 2 (2013): Julio-Diciembre; 101-113 1853-8665 0370-4661 spa https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5658/4392 https://creativecommons.org/licenses/by-nc-sa/3.0/deed.es |
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Universidad Nacional de Cuyo |
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Revistas en línea |
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Revistas en línea |
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Revista de la Facultad de Ciencias Agrarias |
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Revista de la Facultad de Ciencias Agrarias |
| institution_str |
I-11 |
| repository_str |
R-107 |
| language |
spa |
| format |
Online |
| author |
Gonzalez, Ana Maria |
| spellingShingle |
Gonzalez, Ana Maria Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae) dioecia estaminodios flores nectario Schinopsis balansae vascularización dioecy staminoids flowers nectary Schinopsis balansae vascularization |
| author_facet |
Gonzalez, Ana Maria |
| author_sort |
Gonzalez, Ana Maria |
| title |
Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae) |
| title_short |
Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae) |
| title_full |
Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae) |
| title_fullStr |
Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae) |
| title_full_unstemmed |
Morfología y anatomía floral de Schinopsis balansae (Anacardiaceae) |
| title_sort |
floral morphology and anatomy of schinopsis balansae (anacardiaceae) |
| description |
A morphological and anatomical analysis of Schinopsis balansae Engl. was performed, using optical and scanning electron microscopy. The main objective was to obtain data from the flowers of this species, usually described as polygamous-dioecious. The results shows that the flowers described as functionally perfect are structurally pistillate; although have five staminoids, they are smaller and lack sporogenous tissue. In the staminate flowers, the structure described as vestigial pistil is the excrescence of the apex of the receptacle, covered by nectariferous tissue. Thus, it is right to describe S. balansae as dioecious species. The study of the vascularization of male flowers shows that the reduction process is complete, since not even the vascular traces for the pistil persists. The gynoecium of pistillate flowers is pseudomonomerous with one functional carpel, one ovule and one dorsal style and stigmata, and two vestigial carpels, represented only by individual lateral style/stigma. Both types of flowers present an intrastaminal nectary disc, with nectarostomatas for nectar release. The analysis of the anatomic structure of S. balansae provides data that are consistent with those found in other studied genus of Anacardioideae group in the Anacardiaceae family. |
| publisher |
Facultad de Ciencias Agrarias-UNCuyo |
| publishDate |
2022 |
| url |
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5658 |
| topic |
dioecia estaminodios flores nectario Schinopsis balansae vascularización dioecy staminoids flowers nectary Schinopsis balansae vascularization |
| topic_facet |
dioecia estaminodios flores nectario Schinopsis balansae vascularización dioecy staminoids flowers nectary Schinopsis balansae vascularization |
| work_keys_str_mv |
AT gonzalezanamaria floralmorphologyandanatomyofschinopsisbalansaeanacardiaceae AT gonzalezanamaria morfologiayanatomiafloraldeschinopsisbalansaeanacardiaceae |
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1800220941212450816 |
