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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Autor principal: Del Fueyo, G.M.
Formato: JOUR
Materias:
Conifers
Embryogenesis
Megagametogenesis
Megasporogenesis
Podocarpusovulate cone ontogeny
Pollen germination
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319449_v49_n1_p49_DelFueyo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319449_v49_n1_p49_DelFueyo
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spelling todo:paper_00319449_v49_n1_p49_DelFueyo2023-10-03T14:44:35Z Cone and ovule development in the Podocarpus species from Argentina Del Fueyo, G.M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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
Del Fueyo, G.M.
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.
format JOUR
author Del Fueyo, G.M.
author_facet Del Fueyo, G.M.
author_sort Del Fueyo, G.M.
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
url http://hdl.handle.net/20.500.12110/paper_00319449_v49_n1_p49_DelFueyo
work_keys_str_mv AT delfueyogm coneandovuledevelopmentinthepodocarpusspeciesfromargentina
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