The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae)

The development of the female gametophyte in Ceiba insignis (Kunth) Gibbs & Semir has been investigated. A normal linear tetrad of megaspores is formed of which the lowermost one is functional and produces a seven-celled embryo-sac of Polygonum type. The antipodals are ephemeral. The filiform ap...

Descripción completa

Detalles Bibliográficos
Autores principales: Galati, B.G., Rosenfeldt, S.
Formato: JOUR
Materias:
Ceiba
Hypostase
Megagametophyte
Megaspores
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319449_v47_n2_p221_Galati
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00319449_v47_n2_p221_Galati
record_format dspace
spelling todo:paper_00319449_v47_n2_p221_Galati2023-10-03T14:44:34Z The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae) Galati, B.G. Rosenfeldt, S. Ceiba Hypostase Megagametophyte Megaspores The development of the female gametophyte in Ceiba insignis (Kunth) Gibbs & Semir has been investigated. A normal linear tetrad of megaspores is formed of which the lowermost one is functional and produces a seven-celled embryo-sac of Polygonum type. The antipodals are ephemeral. The filiform apparatus of the synergids is very conspicuous. An hypostase with callosic walls is present in the chalazal tissue. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319449_v47_n2_p221_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
Hypostase
Megagametophyte
Megaspores
spellingShingle Ceiba
Hypostase
Megagametophyte
Megaspores
Galati, B.G.
Rosenfeldt, S.
The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae)
topic_facet Ceiba
Hypostase
Megagametophyte
Megaspores
description The development of the female gametophyte in Ceiba insignis (Kunth) Gibbs & Semir has been investigated. A normal linear tetrad of megaspores is formed of which the lowermost one is functional and produces a seven-celled embryo-sac of Polygonum type. The antipodals are ephemeral. The filiform apparatus of the synergids is very conspicuous. An hypostase with callosic walls is present in the chalazal tissue.
format JOUR
author Galati, B.G.
Rosenfeldt, S.
author_facet Galati, B.G.
Rosenfeldt, S.
author_sort Galati, B.G.
title The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_short The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_full The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_fullStr The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_full_unstemmed The development of the megagametophyte in Ceiba insignis (Kunth) Gibbs & Semir (Ex. Chorisia speciosa St. Hil.) (Bombacaceae)
title_sort development of the megagametophyte in ceiba insignis (kunth) gibbs & semir (ex. chorisia speciosa st. hil.) (bombacaceae)
url http://hdl.handle.net/20.500.12110/paper_00319449_v47_n2_p221_Galati
work_keys_str_mv AT galatibg thedevelopmentofthemegagametophyteinceibainsigniskunthgibbssemirexchorisiaspeciosasthilbombacaceae
AT rosenfeldts thedevelopmentofthemegagametophyteinceibainsigniskunthgibbssemirexchorisiaspeciosasthilbombacaceae
AT galatibg developmentofthemegagametophyteinceibainsigniskunthgibbssemirexchorisiaspeciosasthilbombacaceae
AT rosenfeldts developmentofthemegagametophyteinceibainsigniskunthgibbssemirexchorisiaspeciosasthilbombacaceae
_version_ 1807317051469987840

Ejemplares similares