Artículo
Gotelli, M.M.; Galati, B.G.; Medan, D. "Embryology of Helianthus annuus (Asteraceae)" (2008) Annales Botanici Fennici. 45(2):81-96
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Abstract:
Abortion of sunflower fruits during different phases of their development could be due to abnormalities in the reproductive process. We report a comparative study of the sporogenesis, gametogenesis and the development of the related sporophytic structures in three commercial hybrids, DK 4050, CF 17 and P30, and a line, HA 89. The anther wall consists of epidermis, endothecium, one middle layer and a plasmodial tapetum with binucleate cells before integrating. A peritapetal membrane with orbicules encloses the pollen grains, which are triporate, angulaperturate and shed at tricellular stage. HA 89 also presents tetraporate pollen grains. The ovule is tenuinucellate, unitegmic and anatropous. The young female gametophyte consists of six cells and eight nuclei. Antipodals, which vary in number and in the number of nuclei in each cell, usually have thick walls between themselves and the central cell. Differences among the genotypes studied may explain the contradictions found on previous accounts. © Finnish Zoological and Botanical Publishing Board 2008.
Registro:
| Documento: | Artículo |
| Título: | Embryology of Helianthus annuus (Asteraceae) |
| Autor: | Gotelli, M.M.; Galati, B.G.; Medan, D. |
| Filiación: | Laboratorio de Biología Reproductiva en Plantas Vasculares (79), Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Argentina Grupo de Biología Reproductiva en Plantas Superiores, Cátedra de Botánica Agrícola, Universidad de Buenos Aires, Argentina |
| Palabras clave: | Embryology; Gametogenesis; Helianthus annuus; Sporogenesis; Asteraceae; Endothecium; Helianthus; Helianthus annuus |
| Año: | 2008 |
| Volumen: | 45 |
| Número: | 2 |
| Página de inicio: | 81 |
| Página de fin: | 96 |
| DOI: | http://dx.doi.org/10.5735/085.045.0201 |
| Título revista: | Annales Botanici Fennici |
| Título revista abreviado: | Ann. Bot. Fenn. |
| ISSN: | 00033847 |
| CODEN: | ABOFA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00033847_v45_n2_p81_Gotelli |
Referencias:
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Citas:
---------- APA ----------
Gotelli, M.M., Galati, B.G. & Medan, D. (2008) . Embryology of Helianthus annuus (Asteraceae). Annales Botanici Fennici, 45(2), 81-96.http://dx.doi.org/10.5735/085.045.0201
---------- CHICAGO ----------
Gotelli, M.M., Galati, B.G., Medan, D. "Embryology of Helianthus annuus (Asteraceae)" . Annales Botanici Fennici 45, no. 2 (2008) : 81-96.http://dx.doi.org/10.5735/085.045.0201
---------- MLA ----------
Gotelli, M.M., Galati, B.G., Medan, D. "Embryology of Helianthus annuus (Asteraceae)" . Annales Botanici Fennici, vol. 45, no. 2, 2008, pp. 81-96.http://dx.doi.org/10.5735/085.045.0201
---------- VANCOUVER ----------
Gotelli, M.M., Galati, B.G., Medan, D. Embryology of Helianthus annuus (Asteraceae). Ann. Bot. Fenn. 2008;45(2):81-96.http://dx.doi.org/10.5735/085.045.0201
