Cone and ovule development in the Podocarpus species from Argentina
This paper describes the development of female cone, the megasporogenesis, megagametogenesis, pollen germination and embryogenesis in three native species of Podocarpus from Argentina. During the first stage the primordium of the ovule is covered by the bracts. The megaspore mother cell gives rise t...
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1999
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v49_n1_p49_DelFueyo http://hdl.handle.net/20.500.12110/paper_00319449_v49_n1_p49_DelFueyo |
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paper:paper_00319449_v49_n1_p49_DelFueyo2023-06-08T14:59:44Z Cone and ovule development in the Podocarpus species from Argentina Conifers Embryogenesis Megagametogenesis Megasporogenesis Podocarpusovulate cone ontogeny Pollen germination This paper describes the development of female cone, the megasporogenesis, megagametogenesis, pollen germination and embryogenesis in three native species of Podocarpus from Argentina. During the first stage the primordium of the ovule is covered by the bracts. The megaspore mother cell gives rise to a linear tetrad. The chalazal megaspore is functional which undergoes free nuclear divisions. An archegonial complex with five to six archegonia is originated in the female gametophyte. After pollination, fertilization takes place, and an embryo with two cotyledons is formed. The reproductive process described here shows a similar pattern of development as in most of the conifers. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v49_n1_p49_DelFueyo http://hdl.handle.net/20.500.12110/paper_00319449_v49_n1_p49_DelFueyo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Conifers Embryogenesis Megagametogenesis Megasporogenesis Podocarpusovulate cone ontogeny Pollen germination |
| spellingShingle |
Conifers Embryogenesis Megagametogenesis Megasporogenesis Podocarpusovulate cone ontogeny Pollen germination Cone and ovule development in the Podocarpus species from Argentina |
| topic_facet |
Conifers Embryogenesis Megagametogenesis Megasporogenesis Podocarpusovulate cone ontogeny Pollen germination |
| description |
This paper describes the development of female cone, the megasporogenesis, megagametogenesis, pollen germination and embryogenesis in three native species of Podocarpus from Argentina. During the first stage the primordium of the ovule is covered by the bracts. The megaspore mother cell gives rise to a linear tetrad. The chalazal megaspore is functional which undergoes free nuclear divisions. An archegonial complex with five to six archegonia is originated in the female gametophyte. After pollination, fertilization takes place, and an embryo with two cotyledons is formed. The reproductive process described here shows a similar pattern of development as in most of the conifers. |
| title |
Cone and ovule development in the Podocarpus species from Argentina |
| title_short |
Cone and ovule development in the Podocarpus species from Argentina |
| title_full |
Cone and ovule development in the Podocarpus species from Argentina |
| title_fullStr |
Cone and ovule development in the Podocarpus species from Argentina |
| title_full_unstemmed |
Cone and ovule development in the Podocarpus species from Argentina |
| title_sort |
cone and ovule development in the podocarpus species from argentina |
| publishDate |
1999 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v49_n1_p49_DelFueyo http://hdl.handle.net/20.500.12110/paper_00319449_v49_n1_p49_DelFueyo |
| _version_ |
1768545637654069248 |