Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae)

Ontogeny of the ovule in Ceiba insignis was examined. There is no previous account about ovular initiation in the family Bombacaceae while Ceiba is embryologically unknown. The mature ovule is anatropous, crassinucellate and bitegmic; integuments form a zig-zag micropyle. The ovule primordium is tri...

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Detalles Bibliográficos
Autores principales: Galati, Beatriz Gloria, Rosenfeldt, Sonia
Publicado: 1997
Materias:
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v47_n3_p247_Galati
http://hdl.handle.net/20.500.12110/paper_00319449_v47_n3_p247_Galati
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id paper:paper_00319449_v47_n3_p247_Galati
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spelling paper:paper_00319449_v47_n3_p247_Galati2023-06-08T14:59:43Z Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae) Galati, Beatriz Gloria Rosenfeldt, Sonia Ceiba insignis Development Ovule Zig-zag micropyle Ontogeny of the ovule in Ceiba insignis was examined. There is no previous account about ovular initiation in the family Bombacaceae while Ceiba is embryologically unknown. The mature ovule is anatropous, crassinucellate and bitegmic; integuments form a zig-zag micropyle. The ovule primordium is trizonate. The outer and inner integuments are of dermal origin. The cells of the nucellar epidermis undergo periclinal divisions and form a nucellar cap. Fil:Galati, B.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rosenfeldt, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1997 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v47_n3_p247_Galati http://hdl.handle.net/20.500.12110/paper_00319449_v47_n3_p247_Galati
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ceiba insignis
Development
Ovule
Zig-zag micropyle
spellingShingle Ceiba insignis
Development
Ovule
Zig-zag micropyle
Galati, Beatriz Gloria
Rosenfeldt, Sonia
Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae)
topic_facet Ceiba insignis
Development
Ovule
Zig-zag micropyle
description Ontogeny of the ovule in Ceiba insignis was examined. There is no previous account about ovular initiation in the family Bombacaceae while Ceiba is embryologically unknown. The mature ovule is anatropous, crassinucellate and bitegmic; integuments form a zig-zag micropyle. The ovule primordium is trizonate. The outer and inner integuments are of dermal origin. The cells of the nucellar epidermis undergo periclinal divisions and form a nucellar cap.
author Galati, Beatriz Gloria
Rosenfeldt, Sonia
author_facet Galati, Beatriz Gloria
Rosenfeldt, Sonia
author_sort Galati, Beatriz Gloria
title Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_short Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_full Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_fullStr Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_full_unstemmed Ovule ontogenesis in Ceiba insignis (Kunth) Gibbs & Semir (ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_sort ovule ontogenesis in ceiba insignis (kunth) gibbs & semir (ex. chorisia speciosa st. hil.) (bombacaceae)
publishDate 1997
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319449_v47_n3_p247_Galati
http://hdl.handle.net/20.500.12110/paper_00319449_v47_n3_p247_Galati
work_keys_str_mv AT galatibeatrizgloria ovuleontogenesisinceibainsigniskunthgibbssemirexchorisiaspeciosasthilbombacaceae
AT rosenfeldtsonia ovuleontogenesisinceibainsigniskunthgibbssemirexchorisiaspeciosasthilbombacaceae
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